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United States Department of Agriculture

Agricultural Research Service

Deborah A. Samac (Debby)

Research Plant Pathologist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
First report of race 2 of Colletotrichum trifolii rausing anthracnose on alfalfa (Medicago sativa) in Wisconsin - (Peer Reviewed Journal) - (24-Dec-13)
Protecting the (alfalfa) crown jewels - (Trade Journal)
Samac, D.A., Lamb, J.F. 2013. Protecting the (alfalfa) crown jewels. Forage Focus. August 2013. Pages 7-9.
Using microbial community interactions within plant microbiomes to advance an evergreen agricultural revolution - (Book / Chapter) - (25-Jul-13)
Evaluating Headline fungicide on alfalfa production and sensitivity of pathogens to pyraclostrobin Reprint Icon - (Peer Reviewed Journal)
Samac, D.A., Halfman, B., Jensen, B., Brietenbach, F., Behnken, L., Willbur, J.F., Undersander, D., Blonde, G., Lamb, J.F. 2013. Evaluating Headline fungicide on alfalfa production and sensitivity of pathogens to pyraclostrobin. Plant Health Progress. doi:10.1094/PHP-2013-0917-01-RS.
Effect of wheel traffic and green manure treatments on forage yield and crown rot in alfalfa (Medicago sativa) Reprint Icon - (Peer Reviewed Journal)
Samac, D.A., Lamb, J.F., Kinkel, L.L., Hanson, L.K. 2013. Effect of wheel traffic and green manure treatments on forage yield and crown rot in alfalfa (Medicago sativa). Plant and Soil. DOI:10.1007/s11104-013-1746-5.
Alfalfa non-feed uses - (Peer Reviewed Journal) - (10-Mar-13)
Regulatory patterns of a large family of defensin-like genes expressed in nodules of Medicago truncatula - (Peer Reviewed Journal)
Nallu, S., Silverstein, K.A., Samac, D.A., Bucciarelli, B., Vance, C.P., VandenBosch, K.A. 2013. Regulatory patterns of a large family of defensin-like genes expressed in nodules of Medicago truncatula. PLoS One. 8(4):e60355.
Foliar fungicides on alfalfa: 2012 University extension field trial results from Minnesota and Wisconsin - (Trade Journal)
Halfman, B., Blonde, G., Jensen, B., Samac, D.A., Behnken, L., Breitenbach, F., Undersander, D. 2013. Foliar fungicides on alfalfa: 2012 University extension field trial results from Minnesota and Wisconsin. Forage Focus. March 2013, p. 16-17.
Spatio-temporal expression patterns of Arabidopsis thaliana and Medicago truncatula defensin-like genes - (Peer Reviewed Journal)
Tesfaye, M., Silverstein, K.T., Nallu, S., Wang, L., Botanga, C.J., Gomez, S., Harrison, M., Samac, D.A., Glazebrook, J., Katagiri, F., Gutierrez-Marcos, J.F., VandenBosch, K.A. 2013. Spatio-temporal expression patterns of Arabidopsis thaliana and Medicago truncatula defensin-like genes. PLoS One. 8(3):e58992.
Powdery mildew - (Book / Chapter) - (05-Dec-12)
Crown wart - (Book / Chapter) - (05-Dec-12)
Southern Sclerotium blight - (Book / Chapter) - (05-Dec-12)
Charcoal rot - (Book / Chapter) - (05-Dec-12)
Corky root rot - (Book / Chapter) - (05-Dec-12)
Cylindrocladium root and crown rot - (Book / Chapter) - (05-Dec-12)
Cylindrocarpon root rot - (Book / Chapter) - (05-Dec-12)
Violet root rot - (Book / Chapter) - (05-Dec-12)
Bacterial leaf spot - (Book / Chapter) - (05-Dec-12)
Crown gall - (Book / Chapter) - (05-Dec-12)
Dwarf - (Book / Chapter) - (05-Dec-12)
Alfalfa witches'-broom - (Book / Chapter) - (05-Dec-12)
High-temperature flooding injury - (Book / Chapter) - (05-Dec-12)
Aphanomyces root rot of alfalfa: widespread distribution of race 2 - (Trade Journal)
Samac, D.A., Seitz, V., Ristow, P., Rouse, D. 2012. Aphanomyces root rot: widespread distribution of race 2. Forage Focus. August 2012. p. 8-9.
A novel red clover virus associated with root colonization by Olpidium sp. - (Abstract Only)
Samac, D.A., Lockhart, B., Riday, H. 2012. A novel red clover virus associated with root colonization by Olpidium sp. [abstract]. 2012 Joint North American Alfalfa Improvement Conference, Trifolium, & Grass Breeders Conference, July 10-12, 2012, Ithaca, New York. Available: http://www.naaic.org/Meetings/files/P32-Samac.pdf.
A public pathogen collection for characterizing disease resistance in alfalfa cultivars - (Abstract Only)
Samac, D.A., Dornbusch, M.R., Mclaughlin, D.J. 2012. A public pathogen collection for characterizing disease resistance in alfalfa cultivars [abstract]. 2012 Joint North American Alfalfa Improvement Conference, Trifolium, & Grass Breeders Conference, July 10-12, 2012, Ithaca, New York. Available: http://www.naaic.org/Meetings/National/2012meeting/T21-Samac.pdf.
Role of a putative amino acid transporter in fungal disease resistance in alfalfa - (Abstract Only)
Samac, D.A., Dornbusch, M.R., Foster-Hartnett, D., Tu, Z.J., Gantt, J.S. 2012. Role of a putative amino acid transporter in fungal disease resistance in alfalfa [abstract]. American Phytopathological Society Annual Meeting, August 4-8, 2012, Providence, Rhode Island. Available: http://www.apsnet.org/meetings/Documents/2012_Meeting_Abstracts/aps12abP616.htm.
Alfalfa for maximum livestock nutrition and forage yield - (Trade Journal)
Samac, D.A., Lamb, J.F., Jung, H.G., Schnurr, J.A. 2012. Alfalfa for maximum livestock nutrition and forage yield. Forage Focus. May 2012. p. 19-20.
Effect of glyphosate application on foliar diseases in glyphosate-tolerant alfalfa - (Peer Reviewed Journal)
Samac, D.A., Foster-Hartnett, D. 2012. Effect of glyphosate application on foliar diseases in glyphosate-tolerant alfalfa. Plant Disease. 96(8):1104-1110.
Redesigning alfalfa for use in mixtures with forage grasses - (Trade Journal)
Samac, D.A., Lamb, J.F., Russelle, M.P. 2012. Redesigning alfalfa for use in mixtures with forage grasses. Forage Focus. March 2012. p. 16-17.
What's holding us back? Raising the alfalfa yield bar - (Trade Journal)
Russelle, M.P., Samac, D.A. 2012. What's holding us back? Raising the alfalfa yield bar. Forage Focus. December issue. p. 8-9.
New strategies for managing leaf diseases of alfalfa - (Trade Journal)
Samac, D.A., Behnken, L.M., Breitenbach, F. 2011. New strategies for managing leaf diseases of alfalfa. Forage Focus. December 2011. p. 7-8.
Population genetic structure, gene flow and recombination of Cochliobolus miyabeanus on cultivated wildrice (Zizania palustris) Reprint Icon - (Peer Reviewed Journal)
Castell-Miller, C.V., Samac, D.A. 2012. Population genetic structure, gene flow and recombination of Cochliobolus miyabeanus on cultivated wildrice (Zizania palustris). Plant Pathology. 61(5):903-914.
Modifying crops to increase cell wall digestibility Reprint Icon - (Peer Reviewed Journal)
Jung, H.G., Samac, D.A., Sarath, G. 2012. Modifying crops to increase cell wall digestibility. Plant Science. 185-186:65-77.
Medicago truncatula interacting with Clavibacter michiganensis subsp. insidiosus, a pathosystem in the making - (Abstract Only)
Lu, Y., Glazebrook, J., Ishimaru, C.A., Samac, D.A. 2011. Medicago truncatula interacting with Clavibacter michiganensis subsp. insidiosus, a pathosystem in the making [abstract]. Plant Biology 2011, American Society of Plant Biologists Meeting, August 6-10, 2011, Minneapolis, Minnesota. Available: http://abstracts.aspb.org/pb2011/public/P19/P19052.html.
Multilocus analysis of Phoma sclerotioides isolates from Minnesota - (Abstract Only)
Castell-Miller, C.V., Dornbusch, M.R., Samac, D.A. 2011. Multilocus analysis of Phoma sclerotioides isolates from Minnesota [abstract]. Plant Biology 2011, American Society of Plant Biologists Meeting, August 6-10, 2011, Minneapolis, Minnesota. Available: http://www.apsnet.org/meetings/Documents/2011_meeting_Abstracts/a11ma164.htm.
Assembling and exploring the Cochliobolus miyabeanus genome of a strain pathogenic on wildrice (Zizania palustris) - (Abstract Only)
Castell-Miller, C.V., Tu, Z., Vance, C.P., Samac, D.A. 2011. Assembling and exploring the Cochliobolus miyabeanus genome of a strain pathogenic on wildrice (Zizania palustris) [abstract]. 2011 American Phytopathological Society-International Plant Protection Congress Joint Meeting, August 6-10, 2011, Honolulu, Hawaii. Available: http://www.apsnet.org/meetings/Documents/2011_Meeting_Abstracts/a11ma165.htm.
Aluminum resistance mechanisms in oat (Avena sativa L.) Reprint Icon - (Peer Reviewed Journal)
Radmer, L., Tesfaye, M., Somers, D.A., Temple, S.J., Vance, C.P., Samac, D.A. 2012. Aluminum resistance mechanisms in oat (Avena sativa L.). Plant and Soil. 351(1&2):121-134.
Alfalfa diseases 101: diagnosing common and emerging disease problems - (Trade Journal)
Samac, D.A. 2011. Alfalfa diseases 101: diagnosing common and emerging disease problems. Forage Focus. August 2011. p. 4-5.
Expression of coordinately regulated defense response genes and analysis of their role in disease resistance in Medicago truncatula Reprint Icon - (Peer Reviewed Journal)
Samac, D.A., Penuela, S., Schnurr, J.A., Hunt, E.N., Foster-Hartnett, D., Vandenbosch, K.A., Gantt, J.S. 2011. Expression of coordinately regulated defense response genes and analysis of their role in disease resistance in Medicago truncatula. Molecular Plant Pathology. 12(8):786-798.
Reducing crown and root diseases of alfalfa for improved yield and stand life - (Abstract Only)
Samac, D.A. 2010. Reducing crown and root diseases of alfalfa for improved yield and stand life [abstract]. In: 2010 Minnesota Forage Research Symposium, November 17-18, 2010, St. Cloud, Minnesota. p. 26.
USDA-ARS Plant Science Research Unit, St. Paul Alfalfa/forage Research Program - (Abstract Only)
Samac, D.A. 2010. USDA-ARS Plant Science Research Unit, St. Paul Alfalfa/Forage Research Program [abstract]. In: 2010 Minnesota Forage Association Risk-Reduction Research Summit, November 16-17, 2010, St. Cloud, Minnesota. p. 6.
Using genomics to develop alfalfa as a biomass crop - (Abstract Only)
Yang, S.H., Lamb, J.F., Jung, H.G., Samac, D.A., Vance, C.P., Gronwald, J.W. 2010. Using genomics to develop alfalfa as a biomass crop [abstract]. In: 2010 Minnesota Forage Research Symposium, November 17-18, 2010, St. Cloud, Minnesota. p. 23.
Mycoleptodiscus Crown and Root Rot on Alfalfa in Minnesota and Wisconsin - (Abstract Only)
Samac, D.A., Lamb, J.F., Sheaffer, C.C. 2010. Mycoleptodiscus Crown and Root Rot on Alfalfa in Minnesota and Wisconsin [abstract]. 42nd North American Alfalfa Improvement Conference & 21st Trifolium Conference, July 27-30, 2010, Boise, Idaho.
Genetic Diversity of Phoma sclerotioides Isolates from Minnesota - (Abstract Only)
Castell-Miller, C.V., Dornbusch, M.R., Samac, D.A. 2010. Genetic Diversity of Phoma sclerotioides Isolates from Minnesota [abstract]. 42nd North American Alfalfa Improvement Conference & 21st Trifolium Conference, July 27-30, 2010, Boise, Idaho.
Identification of Novel Defense Response Genes in Medicago truncatula for Improving Disease Resistance in Alfalfa - (Abstract Only)
Samac, D.A., Penuela, S., Schnurr, J.A., Hunt, E., Foster-Hartnett, D., Vandenbosch, K.A., Gantt, S. 2010. Identification of Novel Defense Response Genes in Medicago truncatula for Improving Disease Resistance in Alfalfa [abstract]. Vth International Conference on Legume Genomics and Genetics, July 2-8, 2010, Pacific Grove, California. p. 45.
Dig Alfalfa Plants to Assess Root Rots and Yield Potential - (Other)
Holen, D., Samac, D.A. 2010. Dig Alfalfa Plants to Assess Root Rots and Yield Potential. Forage Quarterly. 4:2.
microRNAs and microRNA Targets Involved in Alfalfa Stem Development - (Abstract Only)
Yang, S.H., Valdes-Lopez, O., Naya, L., Gronwald, J.W., Samac, D.A., Hernandez, G., Vance, C.P. 2010. microRNAs and microRNA targets involved in alfalfa stem development [abstract]. Plant Biology 2010: Joint Meeting of the American Society of Plant Biologists and the Canadian Society of Plant Physiologists, July 31 - August 4, 2010, Montreal, Canada. Abstract No. PO8083.
Understanding the Regulation of Cell Wall Composition in Alfalfa - (Abstract Only)
O'Rourke, J.A., Tesfaye, M., Yang, S.H., Lamb, J.F., Jung, H.G., Vance, C.P., Samac, D.A. 2010. Understanding the Regulation of Cell Wall Composition in Alfalfa [abstract]. Plant and Animal Genome XVIII Conference, January 9-13, 2010, San Diego, California. Available: http://www.intl-pag.org/18/abstracts/P07c_PAGXVIII_799.html.
Rapid and Specific Method for Evaluating Streptomyces Competitive Dynamics in Complex Soil Communities Reprint Icon - (Peer Reviewed Journal)
Schlatter, D.C., Samac, D.A., Tesfaye, M., Kinkel, L.L. 2010. Rapid and Specific Method for Evaluating Streptomyces Competitive Dynamics in Complex Soil Communities. Applied and Environmental Microbiology. 76(6):2009-2012.
Mycoleptodiscus Crown and Root Rot of Alfalfa: An Emerging Problem in Minnesota and Wisconsin? - (Trade Journal)
Samac, D.A. 2009. Mycoleptodiscus Crown and Root Rot of Alfalfa: An Emerging Problem in Minnesota and Wisconsin? Forage Focus. December issue. p. 4.
Biochemical Approaches to Improved Nitrogen Fixation - (Abstract Only)
Vance, C.P., Schultz, J., Denton, M., Tesfaye, M., Samac, D.A., Russelle, M.P., Hernandez, G., Ramirez, M. 2009. Biochemical approaches to improved nitrogen fixation [abstract]. XIII National Congress of Biochemistry and Plant Molecular Biology and 6th Symposium Mexico-USA, November 9-13, 2009, Guanajuato, Mexico. 2009 CDROM.
microRNAs and microRNA Targets Involved in Alfalfa Stem Development - (Abstract Only)
Valdes-Lopez, O., Yang, S.H., Foo, C., Gronwald, J.W., Samac, D.A., Hernandez, G., Vance, C.P. 2010. microRNAs and microRNA Targets Involved in Alfalfa Stem Development [abstract]. XVIII Plant and Animal Genome Conference Proceedings, January 9-13, 2010, San Diego, California. Abstract P727.
Single-Feature Polymorphism Discovery in the Transcriptome of Tetraploid Alfalfa (Medicago Sativa) Reprint Icon - (Peer Reviewed Journal)
Yang, S.H., Xu, W.W., Tesfaye, M., Lamb, J.F., Jung, H.G., Samac, D.A., Vance, C.P., Gronwald, J.W. 2009. Single-Feature Polymorphism Discovery in the Transcriptome of Tetraploid Alfalfa. The Plant Genome. 2(3):224-232.
Brown Root Rot of Alfalfa - (Other)
Hollingsworth, C., Samac, D.A., Peterson, P., Holen, D., Person, H. 2009. Brown Root Rot of Alfalfa. University of Minnesota Extension Service Bulletin. 4 p.
Reducing Alfalfa Brown Root Rot with Crop Rotation - (Other)
Hollingsworth, C., Samac, D.A. 2009. Reducing Alfalfa Brown Root Rot with Crop Rotation. University of Minnesota Extension Forage Program. Forage Quarterly. 3(2):2.
Population Genetic Structure of Cochliobolus miyabeanus on Cultivated Wild Rice (Zizania palustris L.) in Minnesota - (Abstract Only)
Castell-Miller, C.V., Samac, D.A. 2009. Population Genetic Structure of Cochliobolus miyabeanus on Cultivated Wild Rice (Zizania palustris L.) in Minnesota [abstract]. 2009 American Phytopathological Society Annual Meeting, August 1-5, 2009, Portland, Oregon. Available: http://www.apsnet.org/meetings/2009/abstracts/a09ma108.htm.
Medicago truncatula as a Model for Dicot Cell Wall Development Reprint Icon - (Peer Reviewed Journal)
Tesfaye, M., Yang, S.H., Lamb, J.F., Jung, H.G., Samac, D.A., Vance, C.P., Gronwald, J.W., Vandenbosch, K.A. 2009. Medicago truncatula as a Model for Dicot Cell Wall Development. BioEnergy Research. 2(1-2):59-76.
Characterization of a bi-pistil mutant in Medicago truncatula Gaertn - (Abstract Only)
Nair, R., Peck, D., Dundas, I., Samac, D.A., Moore, A., Randles, J. 2008. Characterization of a bi-pistil mutant in Medicago truncatula Gaertn. [abstract]. IV International Conference on Legume Genomics and Genetics, December 7-12, 2008, Puerto Vallarta, Mexico. Abstract No. P92 p. 73.
Identification of genes controlling development of arbuscules in AM symbiosis - (Abstract Only)
Harrison, M.J., Zhang, Q., Levy, J.G., Jung, J.K., Hong, J.J., Mondo, S.J., Foster-Hartnett, D., Samac, D.A., Starker, C.G., Lenz, P.A., Farell, M.L., Gantt, J.S. 2008. Identification of genes controlling development of arbuscules in AM symbiosis [abstract]. IV International Conference on Legume Genomics and Genetics, December 7-12, 2008, Puerto Vallarta, Mexico. Abstract No. L61. p. 38.
Alfalfa Biomass Germplasms: SFP Detection and Transcriptome Analysis - (Abstract Only)
Yang, S.H., Xu, W.W., Tesfaye, M., Lamb, J.F., Jung, H.G., Samac, D.A., Vance, C.P., Gronwald, J.W. 2009. Alfalfa Biomass Germplasms: SFP Detection and Transcriptome Analysis [abstract]. XVII Plant and Animal Genome Conference Proceedings, January 10-14, 2009, San Diego, California. Abstract W167.
Physiological and molecular characterization of aluminum resistance in Medicago truncatula Reprint Icon - (Peer Reviewed Journal)
Chandran, D., Sharopova, N., Vandenbosch, K.A., Garvin, D.F., Samac, D.A. 2008. Physiological and Molecular Characterization of Aluminum Resistance in Medicago truncatula. Biomed Central (BMC) Plant Biology. 8:89. Available: http://www.biomedcentral.com/1471-2229/8/89.
Affect of crop residue on colonization and survival of Phoma sclerotioides - (Abstract Only)
Samac, D.A., Miyamoto, C., Larsen, J.E., Atkinson, L., Hollingsworth, C.R., Motteberg, C.D. 2008. Affect of crop residue on colonization and survival of Phoma sclerotioides [abstract]. Phytopathology. 98:S139.
Effect of glyphosate on foliar diseases in Roundup Ready alfalfa - (Abstract Only)
Foster-Hartnett, D., Samac, D.A. 2008. Effect of glyphosate on foliar diseases in Roundup Ready alfalfa [abstract]. Phytopathology. 98:S54.
Expression analysis of Medicago stem internodes identifies genes associated with regulatory control and biogenesis of plant cell walls - (Abstract Only)
Tesfaye, M., Jung, H.G., Samac, D.A., Gronwald, J.W., Lamb, J.F., Vance, C.P., Vandenbosch, K.A. 2008. Expression analysis of Medicago stem internodes identifies genes associated with regulatory control and biogenesis of plant cell walls [abstract]. American Society of Plant Biologists Annual Meeting, Pan American Congress on Plants and BioEnergy, June 22-25, 2008, Merida, Mexico. Abstract No. P02014. Available: http://abstracts.aspb.org/pb2008/public/P02/P02014.html.
Transcriptome profiling identified novel genes associated with aluminum toxicity, resistance and tolerance in Medicago truncatula Reprint Icon - (Peer Reviewed Journal)
Chandran, D., Sharopova, N., Ivashuta, S., Gantt, J., VandenBosch, K.A., Samac, D.A. 2008. Transcriptome profiling identified novel genes associated with aluminum toxicity, resistance and tolerance in Medicago truncatula. Planta. 228:151-166.
Morphological characterization and genetic analysis of a bi-pistil mutant (bip) in Medicago truncatula Gaertn Reprint Icon - (Peer Reviewed Journal)
Nair, R.M., Peck, D.M., Dundas, I.S., Samac, D.A., Moore, A., Randles, J.W. 2008. Morphological characterization and genetic analysis of a bi-pistil mutant (bip) in Medicago truncatula. Sexual Plant Reproduction. 21:133-141.
Molecular Variability of a Minnesota Population of Phoma Medicaginis Var. Medicaginis, the Causal Agent of Spring Black Stem and Leaf Spot of Alfalfa Reprint Icon - (Peer Reviewed Journal)
Castell-Miller, C., Szabo, L.J., Gale, L.R., O'Neill, N.R., Samac, D.A. 2008. Molecular variability of a Minnesota population of Phoma medicaginis var. medicaginis, the causal agent of spring black stem and leaf spot of alfalfa. Canadian Journal of Plant Pathology. 30:85-96.
Cloning of An Alfalfa Polyphenol Oxidase Gene and Evaluation of Its Potential in Preventing Postharvest Protein Degradation - (Peer Reviewed Journal)
Sullivan, M.L., Hatfield, R.D., Samac, D.A. 2008. Cloning of an alfalfa polyphenol oxidase gene and evaluation of its potential in preventing postharvest protein degradation. Journal of the Science of Food and Agriculture. 88(8):1406-1414.
Genetic dissection of resistance to anthracnose and powdery mildew in Medicago truncatula - (Peer Reviewed Journal)
Ameline-Torregrosal, C., Cazaux, M., Danesh, D., Chardon, F., Cannon, S.B., Esquerre-Tugaye, M., Dumas, B., Young, N.D., Samac, D.A., Huguet, T., Jacquet, C. 2008. Genetic dissection of resistance to anthracnose and powdery mildew in Medicago truncatula. Molecular Plant-Microbe Interactions. 21(1):61-69.
Genetic dissection of resistance to anthracnose and powdery mildew in Medicago truncatula Reprint Icon - (Peer Reviewed Journal)
Ameline-Torregrosal, C., Cazaux, M., Danesh, D., Chardon, F., Cannon, S.B., Esquerre-Tugaye, M., Dumas, B., Young, N.D., Samac, D.A., Huguet, T., Jacquet, C. 2008. Genetic dissection of resistance to anthracnose and powdery mildew in Medicago truncatula. Molecular Plant-Microbe Interactions. 21:61-69.
Region and field level distributions of aster yellows phytoplasma in small grains crops Reprint Icon - (Peer Reviewed Journal)
Hollingsworth, C.R., Samac, D.A., Atkinson, L.M., Larsen, J.E., Motteberg, C.D., Abrahamson, M., Glogoza, P., MacRae, I.V. 2008. Region and field level distributions of aster yellows phytoplasma in small grains crops. Plant Disease. 92(4):623-630.
Roles of defense response genes in plant-microbe interactions - (Abstract Only)
Samac, D.A., Penuela, S., Foster-Hartnett, D., Hunt, E.N., Schnurr, J.A. 2007. Roles of defense response genes in plant-microbe interactions [abstract]. Phytopathology. 97:S103.
Aster yellows incidence and distribution within commercial small grains fields in Minnesota - (Abstract Only)
Atkinson, L.M., Hollingsworth, C.R., Larsen, J.E., Samac, D.A., Motteberg, C.D. 2007. Aster yellows incidence and distribution within commercial small grains fields in Minnesota [abstract]. Phytopathology. 97:S5.
Infection and development of Phoma medicaginis on moderately resistant and susceptible alfalfa genotypes Reprint Icon - (Peer Reviewed Journal)
Castell-Miller, C.V., Zeyen, R.J., Samac, D.A. 2007. Infection and development of Phoma medicaginis on moderately resistant and susceptible alfalfa genotypes. Canadian Journal of Plant Pathology. 29:290-298.
A system for identification of candidate genes controlling cell wall synthesis in alfalfa stems - (Abstract Only)
Gebeyaw, M.T., Lamb, J.F., Samac, D.A., Gronwald, J.W., Jung, H.G. 2007. A system for identification of candidate genes controlling cell wall synthesis in alfalfa stems [abstract]. Physiologia Plantarum. 130:259.
Alfalfa - (Book / Chapter)
Gebeyaw, M.T., Samac, D.A., Lamb, J.F. 2008. Alfalfa. In: Kole, C., Hall, T.C., editors. A Compendium of Transgenic Crop Plants. Volume 3. Oxford, UK: Blackwell Publishing. p. 199-210.
Recent advances in legume-microbe interactions: recognition, defense response and symbiosis from a genomic perspective Reprint Icon - (Peer Reviewed Journal)
Samac, D.A., Graham, M.A. 2007. Recent advances in legume-microbe interactions: recognition, defense response, and symbiosis from a genomic perspective. Plant Physiology. 144:582-587.
Molecular and cytological responses of Medicago truncatula to Erysiphe pisi Reprint Icon - (Peer Reviewed Journal)
Foster-Hartnett, D., Danesh, D., Penuela, S., Sharopova, N., Endre, G., VandenBosch, K., Young, N.D., Samac, D.A. 2007. Molecular and cytological responses of Medicago truncatula to Erysiphe pisi. Molecular Plant Pathology. 8(3):307-319.
A comparative study of alfalfa and Medicago truncatula stem traits: morphology, chemical composition, and ruminal digestibility Reprint Icon - (Peer Reviewed Journal)
Schnurr, J.A., Jung, H.G., Samac, D.A. 2007. A comparative study of alfalfa and Medicago truncatula stem traits: morphology, chemical composition, and ruminal digestibility. Crop Science. 47:1672-1680.
Alfalfa root health and disease management: a foundation for maximizing production potential and stand life - (Trade Journal)
Samac, D.A., Malvick, D., Hudelson, B., Gibbs, A., Hollingsworth, C. 2007. Alfalfa root health and disease management: a foundation for maximizing production potential and stand life. Forage Focus. p. 6-7.
Alfalfa leaf protein and stem cell wall polysaccharide yields under hay and biomass management systems Reprint Icon - (Peer Reviewed Journal)
Lamb, J.F., Jung, H.G., Sheaffer, C.C., Samac, D.A. 2007. Alfalfa leaf protein and stem cell wall polysaccharide yields under hay and biomass management systems. Crop Science. 47:1407-1415.
Distribution of Phoma Sclerotioides on Alfalfa and Winter Wheat Crops in the North Central U.S. Reprint Icon - (Peer Reviewed Journal)
Larsen, J.E., Hollingsworth, C.R., Flor, J., Dornbusch, M.R., Simpson, N.L., Samac, D.A. 2007. Distribution of Phoma sclerotioides on alfalfa and winter wheat crops in the North Central U.S. Plant Disease. 91:551-558.
Medicago GeneChips: a new tool for alfalfa genomics research - (Trade Journal)
Tesfaye, M., Samac, D.A., Vance, C.P. 2006. Medicago GeneChips: a new tool for alfalfa genomics research. Forage Focus. p. 3.
Alfalfa Leaf Protein and Stem Cell Wall Polysaccharide Yields and Theoretical Ethanol Production under Hay and Biomass Management Systems - (Abstract Only)
Lamb, J.F., Jung, H.G., Sheaffer, C.C., Samac, D.A. 2006. Alfalfa leaf protein and stem cell wall polysaccharide yields and theoretical ethanol production under hay and biomass management systems [abstract]. 40th North American Alfalfa Improvement Conference, July 17-19, 2006, Bloomington, Minnesota. Available: http://www.naaic.org/Meetings/National/2006meeting/procedings/Lamb.PDF.
Alfalfa leaf protein and stem cell wall polysaccharide yields and theoretical ethanol production under hay and biomass management systems - (Abstract Only)
Lamb, J.F., Jung, H.G., Sheaffer, C.C., Samac, D.A. 2006. Alfalfa leaf protein and stem cell wall polysaccharide yields and theoretical ethanol production under hay and biomass management systems [abstract]. North American Alfalfa Improvement Conference, July 16–19, 2006, Bloomington, MN. Available: http://www.naaic.org/Meetings/National/2006meeting/procedings/Lamb.PDF.
Transcriptomics - (Book / Chapter)
Kuster, H., Becker, A., Samac, D.A., Tesfaye, M. 2006. Transcriptomics. In: The Medicago truncatula Handbook. The Samuel Roberts Noble Foundation, Ardmore, OK. Available: http://www.noble.org/MedicagoHandbook/.
Inoculation and Growth with Foliar Pathogenic Fungi - (Book / Chapter)
Ellwood, S., Kamphuis, L., Pfaff, T., Oliver, R., Samac, D.A., Foster-Hartnett, D., Tivoli, B., Onfroy, C., Moussart, A. 2006. Inoculation and growth with foliar pathogenic fungi. In: The Medicago truncatula Handbook. The Samuel Roberts Noble Foundation, Ardmore, OK. Available: http://www.noble.org/MedicagoHandbook/.
Phoma Sclerotioides Confirmed As a Pathogen of Winter Wheat and Its Distribution in Northwest Minnesota - (Abstract Only)
Hollingsworth, C.R., Samac, D.A., Atkinson, L.M. 2006. Phoma sclerotioides confirmed as a pathogen of winter wheat and its distribution in northwest Minnesota [abstract]. American Phytopathological Society Abstracts. 2006 North Central Division Meeting, June 13-15, 2006, Fargo, North Dakota. Available: http://www.apsnet.org/meetings/div/nc06abs.asp.
The Affymetrix Medicago Genechip Array Is Applicable for Transcript Analysis of Alfalfa (Medicago Sativa) Reprint Icon - (Peer Reviewed Journal)
Tesfaye, M., Silverstein, K.A., Bucciarelli, B., Samac, D.A., Vance, C.P. 2006. The Affymetrix Medicago Genechip Array is applicable for transcript analysis of alfalfa (Medicago sativa). Functional Plant Biology. 33:783-788.
Transcript Analysis of Medicago Spp. - (Abstract Only)
Tesfaye, M., Bucciarelli, B., Samac, D.A., Vance, C.P. 2006. Transcript analysis of Medicago spp. Third International Conference on Legume Genomics and Genetics, April 9-13, 2006, Brisbane, Australia. p. 79.
Recruitment of Novel Calcium-Binding Proteins for Root Nodule Symbiosis in Medicago Truncatula Reprint Icon - (Peer Reviewed Journal)
Liu, J., Miller, S.S., Graham, M., Bucciarelli, B., Catalano, C.M., Sherrier, D.J., Samac, D.A., Ivashuta, S., Fedorova, M., Matsumoto, P., Gantt, J.S., Vance, C.P. 2006. Recruitment of novel calcium-binding proteins for root nodule symbiosis in Medicago truncatula. Plant Physiology. 141:167-177.
Transcript Profiling in Medicago Truncatula to Identify Genes Involved in Abiotic and Biotic Stress Responses - (Abstract Only)
Samac, D.A., Foster-Hartnett, D., Chandran, D., Ivashuta, S., Sharopova, N., Vandenbosch, K.A. 2006. Transcript profiling in Medicago truncatula to identify genes involved in abiotic and biotic stress responses [abstract]. Plant and Animal Genome Abstracts. Available: http://www.intl-pag.org/14/abstracts/PAG14_W96.html.
Transcript Analysis of Early Nodulation Events in Medicago Truncatula Reprint Icon - (Peer Reviewed Journal)
Lohar, D., Sharopova, N., Endre, G., Penuela, S., Samac, D.A., Town, C., Silverstein, K.A., VandenBosch, K.A. 2006. Transcript analysis of early nodulation events in Medicago truncatula. Plant Physiology. 140:221-234.
Insights into Symbiotic Nitrogen Fixation in Medicago Truncatula Reprint Icon - (Peer Reviewed Journal)
Tesfaye, M., Samac, D.A., Vance, C.P. 2006. Insights into symbiotic nitrogen fixation in Medicago truncatula. Molecular Plant-Microbe Interactions. 19:330-341.
Development of Alfalfa for Ethanol Production and Other Bioproducts - (Other)
Samac, D.A., Jung, H.G., Lamb, J.F. 2005. Development of alfalfa for ethanol production and other bioproducts. Forage Focus. p. 6.
Development of Transgenic Plants Expressing a Bacterial Enzyme Gene to Remove and Degrade An Environmentally Persistent Herbicide, Atrazine - (Abstract Only)
Uefuji, H., Wang, L., Samac, D.A., Shapir, N., Wackett, L.P., Vance, C.P., Sadowsky, M.J. 2005. Development of transgenic plants expressing a bacterial enzyme gene to remove and degrade an environmentally persistent herbicide, atrazine [abstract]. Plant Biology Annual Meeting. Abstract No. 1111.
Characterization of Transgenic Oat Plants for Enhanced Aluminum Tolerance Via Expression of An Alfalfa Mdh Gene - (Abstract Only)
Radmer, L., Garvin, D.F., Somers, D., Samac, D.A. 2005. Characterization of transgenic oat plants for enhanced aluminum tolerance via expression of an alfalfa MDH gene [abstract]. Plant Biology Annual Meeting. Abstract No. 512.
Molecular Characterization of Al-Induced Genes in Medicago Truncatula and Examination of Their Role in Al Tolerance - (Abstract Only)
Chandran, D., Ivashuta, S., Gantt, S., Samac, D.A. 2005. Molecular characterization of Al-induced genes in Medicago truncatula and examination of their role in Al tolerance [abstract]. American Society of Plant Biologists Annual Meeting. Abstract No. 511.
Shoot Signals and Molecular Regulation of P-Deficiency Induced Genes in Cluster Roots of White Lupin - (Proceedings)
Liu, J., Yamagishi, M., Uhde-Stone, C., Bucciarelli, B., Samac, D.A., Allan, D., Vance, C.P. 2005. Shoot signals and molecular regulation of P-deficiency induced genes in cluster roots of white lupin. In: Li, C.J., Zhang, F.S., Doberman, A., editors. Plant Nutrition for Food Security, Human Health and Environmental Protection. Proceedings of the 15th Plant Nutrition Colloquium, September 14-19, 2005, Beijing, The People's Republic of China. Beijing: Tsinghua University Press. p. 94-96.
Bacterial Symbiosis Triggers the Expression of Plant Resistance Genes and Induces the Transcription of Organic Acid Metabolism and Ammonium Assimilation Genes in Medicago Truncatula - (Abstract Only)
Tesfaye, M.T., Samac, D.A., Vance, C.P. 2005. Bacterial symbiosis triggers the expression of plant resistance genes and induces the transcription of organic acid metabolism and ammonium assimilation genes in Medicago truncatula. Model Legume Congress, June 5-9, 2005, Pacific Grove, California. Paper No. S48, p. 126.
Physiological and Molecular Examination of Aluminum Tolerance in Medicago Truncatula - (Abstract Only)
Chandran, D., Sharopova, N., Garvin, D.F., VandenBosch, K., Samac, D.A. 2005. Physiological and molecular examination of aluminum tolerance in Medicago truncatula [abstract]. 2005 Model Legume Congress, June 5-9, 2005, Pacific Grove, California. Abstract No. S11.
Carbon and Nitrogen Metabolism in Legume Nodules - (Abstract Only)
Vance, C.P., Miller, S.S., Liu, J., Gantt, J.S., Samac, D.A. 2005. Carbon and nitrogen metabolism in legume nodules. 2005 Model Legume Congress, June 5-9, 2005, Pacific Grove, California. Paper No. S32, p. 43.
Using Microarray Analysis to Identify Genes Associated with Basal Resistance and the Hypersensitive Response (Hr) in Medicago Truncatula - (Abstract Only)
Foster-Hartnett, D., Danesh, D., Penuela, S., Sharopova, N., VandenBosch, K.A., Young, N.D., Samac, D.A. 2005. Using microarray analysis to identify genes associated with basal resistance and the hypersensitive response (HR) in Medicago truncatula [abstract]. 2005 Model Legume Congress, June 5-9, 2005, Pacific Grove, California. Abstract No. P54.
Development of Alfalfa (Medicago Sativa L.) As a Biofuels Feedstock Reprint Icon - (Book / Chapter)
Samac, D.A., Jung, H.G., Lamb, J.F. 2006. Development of alfalfa (Medicago sativa L.) as a feedstock for production of ethanol and other bioproducts. In: Minteer, S., editor. Alcoholic Fuels. Boca Raton, FL: CRC Press. p. 79-98.
Biodegradation of Atrazine in Transgenic Plants Expressing a Modified Bacterial Atrazine Chlorohydrolase (Atza) Gene Reprint Icon - (Peer Reviewed Journal)
Wang, L., Samac, D.A., Shapir, N., Wackett, L.P., Vance, C.P., Olszewski, N.E., Sadowsky, M.J. 2005. Biodegradation of atrazine in transgenic plants expressing a modified bacterial atrazine chlorohydrolase (atzA) gene. Plant Biotechnology Journal. 3:475-486.
Transcript Profiling to Identify Genes Associated with Disease Resistance in Medicago Truncatula - (Abstract Only)
Samac, D.A., Foster-Hartnett, D., Penuela, S., Sharopova, N., VandenBosch, K.A. 2005. Transcript profiling to identify genes associated with disease resistance in Medicago truncatula [abstract]. 2nd Australian Model Legume Workshop, April 5-8, 2005, Rottnest Island, Australia. Abstract No. 20.
Root Nodule Specific Calmodulin-Like Proteins; Co-Opting Genes for Symbiosis - (Abstract Only)
Liu, J., Miller, S.S., Graham, M., Bucciarelli, B., Catalano, C.M., Sherrier, D.J., Samac, D.A., Ivashuta, S., Fedorova, M., Matsumoto, P., Gantt, J.S., Vance, C.P. 2005. Root nodule specific calmodulin-like proteins; co-opting genes for symbiosis. 2nd Australian Model Legume Workshop Proceedings, April 5-8, 2005, Rottnest Island, Western Australia. p. 13.
Agrobacterium Tumefaciens-Mediated Transformation of the Forage Legume Alfalfa (Medicago Sativa) - (Book / Chapter)
Samac, D.A., Austin-Phillips, S. 2006. Alfalfa (Medicago sativa L.). In: Wang, K., editor. Methods in Molecular Biology, Vol. 343, Agrobacterium Protocols. 2nd edition. Totowa, NJ: Humana Press. p. 301-311.
Genome Clustering of Novel Calcium Binding Proteins Involved in Root Nodule Symbiosis - (Abstract Only)
Miller, S.S., Liu, J., Graham, M., Fedorova, M., Bucciarelli, B., Catalano, C., Sherrier, J., Matsumoto, P., Samac, D.A., Gantt, S., Vance, C.P. 2005. Genome clustering of novel calcium binding proteins involved in root nodule symbiosis [abstract]. Plant and Animal Genome XIII Abstracts. Paper No. W-206, p. 49.
Signaling of Phosphorus Deficiency Induced Gene Expression in White Lupin Requires Sugars and Phloem Transport Reprint Icon - (Peer Reviewed Journal)
Liu, J., Samac, D.A., Bucciarelli, B., Allan, D.L., Vance, C.P. 2005. Signaling of phosphorus deficiency induced gene expression in white lupin requires sugars and phloem transport. Plant Journal. 41:257-268.
Cloning and Characterization of Red Clover Polyphenol Oxidase Cdnas and Expression of Active Protein in Escherichia Coli and Transgenic Alfalfa - (Peer Reviewed Journal)
Sullivan, M.L., Hatfield, R.D., Thoma, S., Samac, D.A. 2004. Cloning of red clover polyphenol oxidase cdnas and expression of active protein in escherichia coli and transgenic alfalfa. Plant Physiology. 136:3234-3244.
Gene Transcription Profiling of Medicago Truncatula Due to Changing Nutrient Nitrogen Supply - (Abstract Only)
Gebeyaw, M.T., Samac, D.A., VandenBosch, K.A., Vance, C.P. 2004. Gene transcription profiling of Medicago truncatula due to changing nutrient nitrogen supply [abstract]. 19th North American Alfalfa Improvement Conference, July 19-21, 2004, Ste. Foy, Quebec, Canada. Available: http://www.naaic.org/Meetings/National/2004NAAIC&TC/2004abstracts/mtesfaye.pdf.
Identification and Characterization of Novel Calcium Binding Proteins in the Symbiosome Space of M. Truncatula - (Abstract Only)
Liu, J., Miller, S.S., Bucciarelli, B., Fedorova, M., Matsumoto, P., Graham, M., Sherrier, J., Samac, D.A., Gantt, S., Vance, C.P. 2004. Identification and characterization of novel calcium binding proteins in the symbiosome space of M. truncatula [abstract]. American Society of Plant Biologists Annual Meeting, July 24-28, 2004, Orlando, FL. Abstract No. 24004.
Identification of Phoma Sclerotioides, the Causal Agent of Brown Root Rot, in Wisconsin and Minnesota - (Abstract Only)
Samac, D.A., Hollingsworth, C.R. 2004. Identification of Phoma sclerotioides, the causal agent of brown root rot, in Wisconsin and Minnesota [abstract]. North American Alfalfa Improvement Conference, July 19-21, 2004, Ste. Foy, Quebec, Canada. Abstract No. 51.
Transcript Profiling in Medicago Truncatula Responding to Infection by Erysiphe Pisi and Colletotrichum Trifolii - (Abstract Only)
Samac, D.A., Foster-Hartnett, D., Penuela, S., Danesh, D., Vandenbosch, K. 2004. Transcript profiling in Medicago truncatula responding to infection by Erysiphe pisi and Colletotrichum trifolii [abstract]. 19th North American Alfalfa Improvement Conference, July 19-21, 2004, Ste Foy, Quebec, Canada. Available: http://www.naaic.org/Meetings/National/2004NAAIC&TC/2004abstracts/dsamac-2.pdf.
Detection of Brown Root Rot of Alfalfa in Minnesota and Wisconsin - (Abstract Only)
Samac, D.A., Hollingsworth, C.R. 2005. Detection of brown root rot of alfalfa in Minnesota and Wisconsin [abstract]. Phytopathology. 95:S165.
Gene Expression in Developing Seed Coats of Medicago Sativa - (Abstract Only)
Samac, D.A., Dornbusch, M.R. 2004. Gene expression in developing seed coats of Medicago sativa [abstract]. Second International Conference on Legume Genomics and Genetics, June 7-11, 2004, Dijon, France. p. 266.
Legume Improvement Through Functional Genomic Studies of N and P Acquisition - (Abstract Only)
Vance, C.P., Uhde-Stone, C., Ramirez, M., Fedorova, M., Allan, D., Graham, M., Liu, J., Samac, D.A., Lara, M., Hernandez, G. 2004. Legume improvement through functional genomic studies of N and P acquisition. In: Legumes for the Benefit of Agriculture, Nutrition and the Environment. Second International Conference on Legume Genomics and Genetics, June 7-11, 2004, Dijon, France. p. 304.
Transgenic Alfalfa Secretes a Fungal Endochitinase Protein to the Rhizosphere - (Peer Reviewed Journal)
Tesfaye, M., Denton, M.D., Samac, D.A., Vance, C.P. 2005. Transgenic alfalfa secretes a fungal endochitinase protein to the rhizosphere. Plant and Soil Journal. 269:233-243.
Spatial Variation in Streptomyces Genetic Composition and Diversity in a Prairie Soil - (Peer Reviewed Journal)
Davelos, A.L., Xiao, K., Samac, D.A., Martin, A.P., Kinkel, L.L. 2004. Spatial variation in Streptomyces genetic composition and diversity in a prairie soil. Microbial Ecology. 48:601-612.
Histochemical and Transcriptome Analysis of the Interactions Between Medicago Truncatula and the Pathogens Colletotrichum Trifolii and Erisyphe Pisi - (Abstract Only)
Foster-Hartnett, D., Penuela, S., Danesh, D., Sharapova, N., VandenBosch, K.A., Young, N.D., Samac, D.A. 2004. Histochemical and transcriptome analysis of the interactions between Medicago truncatula and the pathogens Colletotrichum trifolii and Erisyphe pisi [abstract]. Second International Conference on Legume Genomics and Genetics, June 7-11, 2004, Dijon, France. p. 239.
An Evaluation of Aluminum Tolerance in Medicago Truncatula - (Abstract Only)
Chandran, D., Garvin, D.F., Samac, D.A. 2004. An evaluation of aluminum tolerance in Medicago truncatula [abstract]. American Society of Plant Biologists Annual Meeting, July 24-28, 2004, Orlando, FL. Abstract No. 692.
A Comparison of Constitutive Promoters for Expression of Transgenes in Alfalfa (Medicago Sativa) - (Peer Reviewed Journal)
Samac, D.A., Dornbusch, M., Gebeyaw, M.T., Purev, S., Temple, S.J. 2004. A comparison of constitutive promoters for expression of transgenes in alfalfa (Medicago sativa). Transgenic Research. 13:349-361.
Spatial Variation in the Frequency and Intensity of Antibiotic Interactionsamong Streptomycetes from Prairie Soil - (Peer Reviewed Journal)
Davelos, A.L., Kinkel, L.L., Samac, D.A. 2004. Spatial variation in the frequency and intensity of antibiotic interactions among streptomycetes from prairie soil. Applied and Environmental Microbiology. 70(2):1051-1058.
Brown Root Rot of Alfalfa: What's the Big Deal? - (Abstract Only)
Peterson, P., Samac, D.A., Hollingsworth, C. 2003. Brown root rot of alfalfa: what's the big deal? Minnesota Forage and Grassland Council Forage Connection Newsletter. p. 7.
Expression of Udp-Glucose Dehydrogenase Reduces Cell-Wall Polysaccharide Concentration and Increases Xylose Content in Alfalfa Stems Reprint Icon - (Peer Reviewed Journal)
Samac, D.A., Litterer, L., Temple, G., Jung, H.G., Somers, D.A. 2004. Expression of UDP-glucose dehydrogenase reduces cell-wall polysaccharide concentration and increases xylose content in alfalfa stems. Applied Biochemistry and Biotechnology. 116(1):1167-1182.
The Influence of Organic Acid Exudation in Alfalfa on Aluminum Tolerance, Nutrient Acquisition, and Bacterial Diversity - (Review Article)
Samac, D.A. 2003. Influence of organic acid exudation in alfalfa on aluminum tolerance, nutrient acquisition, and bacterial diversity. Information Systems for Biotechnology News Report. Available: http://www.isb.vt.edu/news/2003/artspdf/nov0301.pdf
Improving the Legume-Rhizobium Symbiosis: Can Genomics and Molecular Genetics Help? - (Proceedings)
Fedorova, M., Denton, M., Schulze, J., Liu, J., Graham, M., Allan, D., Samac, D.A., Vance, C.P. 2004. Improving the legume-rhizobium symbiosis: can genomics help? In: Tikonovich, I., editor. Molecular Plant Microbe Interactions: New Bridges Between Past and Future. Kluwer Academic Publishers. p. 29-31.
Modification of the Rhizosphere by Cluster Roots of Phosphorus-Stressed White Lupin - (Abstract Only) - (01-Sep-03)
Regulation of Phosphate Deficiency Induced Genes in Nitrogen Fixing Nodules and in Reproductive Tissues of Transgenic Alfalfa - (Abstract Only)
Liu, J., Samac, D.A., Allan, D., Vance, C.P. 2003. Regulation of phosphate deficiency induced genes in nitrogen fixing nodules and in reproductive tissues of transgenic alfalfa [abstract]. American Society of Plant Biologists Annual Meeting. Available: http://Z16.133.76.127/pb2003/public/P39/0210.html.
Characterization of Phosphate Deficiency Induced Genes from White Lupin and Analysis of Promoter Activity in Transgenic Plants - (Abstract Only) - (13-Jun-03)
Alfalfa for Biopharmaceuticals? - (Abstract Only)
Gebeyaw, M.T., Denton, M.D., Samac, D.A., Vance, C.P. 2003. Alfalfa for biopharmaceuticals?. Molecular Breeding of Forage and Turf Conference. Available: https://www.register-for.com/mbft/AbstractView.Asp?AbstractId=Abstract29fd
Cloning of Red Clover and Alfalfa Polyphenol Oxidase Genes and Expression of Active Enzymes in Transgenic Alfalfa - (Book / Chapter)
Sullivan, M.L., Thoma, S., Samac, D.A., Hatfield, R.D. 2004. Cloning of red clover and alfalfa polyphenol oxidase genes and expression of active enzymes in transgenic alfalfa. In: Hopkins, A., Wang, Z-Y., Mian, R., Sledge, M., Barker, R.W. editors. Molecular Breeding of Forage and Turf. Netherlands: Kluwer Academic Publishers. p. 189-195.
Expression of Udp-Glucose Dehydrogenase Increases Accumulation of Arabinose and Xylose in Alfalfa Stems - (Abstract Only)
Samac, D.A., Jung, H.G., Litterer, L., Somers, D.A., Temple, G.G. 2003. Expression of UDP-glucose dehydrogenase increases accumulation of arabinose and xylose in alfalfa stems [abstract]. Biotechnology for Fuels and Chemicals Symposium Proceedings. p. 23.
Influence of Enhanced Malate Dehydrogenase Expression by Alfalfa on Diversity of Rhizobacteria and Soil Nutrient Availability Reprint Icon - (Peer Reviewed Journal)
Tesfaye, M., Dufault, N.S., Dornbusch, M.R., Allan, D.L., Vance, C.P., Samac, D.A. 2003. Influence of enhanced malate dehydrogenase expression by alfalfa on diversity of rhizobacteria and soil nutrient availability. Soil Biology and Biochemistry. 35:1103-1113.
Plant Improvement for Tolerance to Aluminum in Acid Soils-a Review Reprint Icon - (Review Article)
Samac, D.A., Tesfaye, M. 2003. Plant improvement for tolerance to aluminum in acid soils. A review. Plant Cell Tissue And Organ Culture. 75(3):189-207.
Expression of Oryzacystatin I and II in Alfalfa Increases Resistance to Theroot-Lesion Nematode - (Peer Reviewed Journal)
SAMAC, D.A., SMIGOCKI, A.C. EXPRESSION OF ORYZACYSTATIN I AND II IN ALFALFA INCREASES RESISTANCE TO THE ROOT-LESION NEMATODE. PHYTOPATHOLOGY. 2003. V. 93. P. 799-804.
Recent Advances in Legume Transformation Reprint Icon - (Review Article)
SOMERS, D.A., SAMAC, D.A., OLHOFT, P.M. RECENT ADVANCES IN LEGUME TRANSFORMATION. PLANT PHYSIOLOGY. 2003. V. 131. P. 892-899.
Microarray Analysis of Pathogen Interactions with Medicago Truncatula - (Abstract Only) - (05-Dec-02)
Population Density and Harvest Maturity Effects on Leaf and Stem Quality in Alfalfa Reprint Icon - (Peer Reviewed Journal)
LAMB, J.F., SHEAFFER, C.C., SAMAC, D.A. 2003. POPULATION DENSITY AND HARVEST MATURITY EFFECTS ON LEAF AND STEM YIELD IN ALFALFA. AGRONOMY JOURNAL. 95:635-641.
Plant Density and Maturity Effects on Leaf and Stem Yield in Alfalfa - (Peer Reviewed Journal) - (04-Nov-02)
Functional Analysis of Different Phosphate Deficiency Induced Promoters in Transgenic Alfalfa - (Abstract Only)
Liu, J., Samac, D.A., Allan, D., Vance, C.P. 2002. Functional analysis of different phosphate deficiency induced promoters in transgenic alfalfa. American Society of Plant Biologists Annual Meeting. Available: http://Z16.133.76.127/pb2002/public/P51/0889.html.
Overexpression of a Nodule-Enhanced Malate Dehydrogenase Increases Nitrogen Fixation in Alfalfa - (Abstract Only)
Denton, M.D., Schulze, J., Temple, S.J., Russelle, M.P., Allan, D., Samac, D.A., Vance, C.P. 2002. Overexpression of a nodule-enhanced malate dehydrogenase increases nitrogen fixation in alfalfa. American Society of Plant Biologists Annual Meeting. Available: http://Z16.133.76.127/pb2002/public/P60/1042.html.
Effects of Antibiotic-Producing Streptomyces Spp. on Nodulations and Leaf Spot in Alfalfa - (Peer Reviewed Journal)
SAMAC, D.A., WILLERT, A.M., MCBRIDE, M.J., KINKEL, L.L. EFFECTS OF ANTIBIOTIC-PRODUCING STREPTOMYCES SPP. ON NODULATIONS AND LEAF SPOT IN ALFALFA. APPLIED SOIL ECOLOGY. 2003. V. 22. P. 55-66.
New Uses for Alfalfa: the Potential for Transgenic Alfalfa to Direct Recombinant Proteins into the Rhizosphere - (Abstract Only)
Gebeyaw, M.T., Denton, M.T., Samac, D.A., Vance, C.P. 2002. New uses for alfalfa: the potential for transgenic alfalfa to direct recombinant proteins into the rhizosphere. American Society of Plant Biologists Annual Meeting. Available: http://Z16.133.76.127/pb2002/public/P72/0642.html.
Transcriptome Analysis of Pathogenic Interactions with Medicago Truncatula - (Abstract Only)
SAMAC, D.A., PENUELA, S., DANESH, D., YOUNG, N.D., VANDENBOSCH, K. TRANSCRIPTOME ANALYSIS OF PATHOGENIC INTERACTIONS WITH MEDICAGO TRUNCATULA. 38TH NORTH AMERICAN ALFALFA IMPROVEMENT CONFERENCE. 2002. P. 6.
Pathosystem Development and Transcriptome Analysis of Pathogen Interactions with Medicago Truncatula - (Abstract Only)
SAMAC, D.A., PENUELA, S., DANESH, D., YOUNG, N.D., VANDENBOSCH, K. PATHOSYSTEM DEVELOPMENT AND TRANSCRIPTOME ANALYSIS OF PATHOGEN INTERACTIONS WITH MEDICAGO TRUNCATULA. NORTH AMERICAN ALFALFA IMPROVEMENT CONFERENCE. 2002. ABSTRACT. P. 48.
Genetic Manipulation of Alfalfa for Organic Acid Synthesis and Aluminum Tolerance - (Abstract Only)
SAMAC, D.A., GEBEYAW, M.T., ALLAN, D.L., VANCE, C.P. GENETIC MANIPULATION OF ALFALFA FOR ORGANIC ACID SYNTHESIS AND ALUMINUM TOLERANCE. 38TH NORTH AMERICAN ALFALFA IMPROVEMENT CONFERENCE. 2002. ABSTRACT. P. 26.
Molecular Variability and Pathogenesis of Phoma Medicaginis Var. Medicaginis Isolates from Minnesota - (Abstract Only)
Castell, C., Samac, D.A., Szabo, L. 2002. Molecular variability and pathogenesis of Phoma medicaginis var. medicaginis isolates from Minnesota. Phytopathology. 92:S12.
Evaluation of Annual Medic Germplasm for Upper Midwest Agroecosystems Reprint Icon - (Peer Reviewed Journal)
DE HAAN, R.L., SHEAFFER, C.C., SAMAC, D.A., MOYNIHAN, J.M., BARNES, D.K. 2002. EVALUATION OF ANNUAL MEDIC GERMPLASM FOR UPPER MIDWEST AGROECOSYSTEMS. JOURNAL OF AGRONOMY AND CROP SCIENCE. 188:417-425.
First International Conference on Legume Genomics and Genetics: Translation to Crop Improvement - (Proceedings) - (03-Jun-02)
Malate Plays a Central Role in Plant Nutrition - (Peer Reviewed Journal)
Schulze, J., Tesfaye, M., Litjens, R.H.M.G., Bucciarelli, B., Trepp, G., Miller, S., Samac, D., Allan, D., Vance, C.P. 2002. Malate plays a central role in plant nutrition. Plant and Soil Journal. 247:133-139.
Genetic Manipulation of Alfalfa and Medicago Truncatula for Organic Acid Synthesis and Metal Tolerance - (Abstract Only) - (11-Jan-02)
Functional Genome Analysis of Pathogen Interactions of Medicago Truncatula - (Abstract Only) - (11-Jan-02)
Phosphorus Stress Induced Proteoid Roots of White Lupin: An Est Approach to Function and Development - (Abstract Only) - (09-Nov-01)
Biological Control of Phytophthora Root Rots on Alfalfa and Soybean with Streptomyces - (Peer Reviewed Journal)
Xiao, K., Samac, D.A., Kinkel, L.L. 2002. Biological control of Phytophthora root rots on alfalfa and soybean with Streptomyces. Biological Control. 23:285-295.
Production of a Biodegradable Plastic Polymer, Poly-B-Hydroxybutyrate, in Transgenic Alfalfa - (Peer Reviewed Journal)
Saruul, P., Srienc, F., Somers, D.A., Samac, D.A. 2002. Production of a biodegradable plastic polymer, poly-B-hydroxybutyrate, in transgenic alfalfa. Crop Science. 42:919-927.
Overexpression of Malate Dehydrogenease in Transgenic Alfalfa Enhances Organic Acid Synthesis and Confers Tolerance to Aluminum - (Peer Reviewed Journal)
Tesfaye, M., Temple, S.J., Allan, D.L., Vance, C.P., Samac, D.A. 2001. Overexpression of malate dehydrogenease in transgenic alfalfa enhances organic acid synthesis and confers tolerance to aluminum. Plant Physiology. 127:1836-1844.
Host Range of Clavibacter Michiganensis Subsp. Insidiosus - (Abstract Only) - (25-Aug-01)
Molecular Variability of Phoma Medicaginis Var. Medicaginis - (Abstract Only)
CASTELL, C., SAMAC, D.A. MOLECULAR VARIABILITY OF PHOMA MEDICAGINIS VAR. MEDICAGINIS. PHYTOPATHOLOGY. 2001. V. 91. P. 513.
Spatial Patterns of Antibiotic Inhibition and Resistance among Streptomycetes from Prairie Soils - (Abstract Only) - (25-Aug-01)
Genetic Diversity of Streptomycete Populations Associated with Two Different Prairie Soils - (Abstract Only)
LEE, S.D., KINKEL, L.L., SAMAC, D.A. GENETIC DIVERSITY OF STREPTOMYCETE POPULATIONS ASSOCIATED WITH TWO DIFFERENT PRAIRIE SOILS. PHYTOPATHOLOGY. 2001. V. 91. P. 554.
Spatial Patterns of Antibiotic Inhibition and Resistance among Streptomycetes from Prairie Soils - (Abstract Only)
DAVELOS, A.L., KINKEL, L.L., SAMAC, D.A. SPATIAL PATTERNS OF ANTIBIOTIC INHIBITION AND RESISTANCE AMONG STREPTOMYCETES FROM PRAIRIE SOILS. AMERICAN PHYTOPATHOLOGY SOCIETY. 2001. V. 91. P. 521.
Improving Alfalfa Fiber Digestibility - (Proceedings)
JUNG, H.G., LINN, J.G., LAMB, J.F., SAMAC, D.A., SOMERS, D.A. IMPROVING ALFALFA FIBER DIGESTIBILITY. FOUR-STATE APPLIED NUTRITION AND MANAGEMENT CONFERENCE PROCEEDINGS. 2001. P. 127-137.
Functional Genomic Analysis of Symbiotic and Pathogenic Interactions of Medicago Truncatula - (Abstract Only) - (11-Jul-01)
Improving Alfalfa Fiber Digestibility - (Proceedings)
JUNG, H.G., LINN, J.G., LAMB, J.F., SAMAC, D.A., SOMERS, D.A. IMPROVING ALFALFA FIBER DIGESTIBILITY. FOUR-STATE APPLIED NUTRITION AND MANAGEMENT CONFERENCE. 2001. CD-ROM. UNIVERSITY OF ILLINOIS.
Expression Analysis of Medicago Truncatula Ests Involved in Plant-Microbe Interactions Using Macro and Microarrays - (Abstract Only) - (11-Jul-01)
Est Analysis for Discovery of Microbe-Induced Genes in Roots of Medicago Truncatula - (Abstract Only) - (11-Jul-01)
Development and Utilization of Transformation in Medicago Species - (Book / Chapter)
Samac, D.A., Temple, S.J. 2004. Development and utilization of transformation in Medicago species. In: Liang, G.H., Skinner, D.Z., editors. Genetically Modified Crops: Their Development, Uses, and Risks. New York, NY: Haworth Press. p. 165-202.
Virtual and Actual Gene Expression Analyses of Medicago Truncatula Roots Challenged by Microbes - (Abstract Only) - (07-Jul-01)
Constitutive Expression of a Nodule Enhanced Malate Dehydrogenase Gene in Alfalfa Plants Alters Organic Acid Synthesis and Improves Growth in Acid Culture - (Abstract Only) - (03-Jul-01)
The Pivotal Role of Malate in Root Nodule Metabolism and Legume Growth - (Abstract Only) - (03-Jul-01)
Suppression of the Root-Lesion Nematode (Pratylenchus Penetrans) in Alfalfa(medicago Sativa) by Streptomyces Spp. - (Peer Reviewed Journal)
Samac, D.A., Kinkel, L.L. 2001. Suppression of the root-lesion nematode (Pratylenchus penetrans) in alfalfa (Medicago sativa) by Streptomyces spp. Plant and Soil. 235:35-44.
Molecular Control of Carbon-Nitrogen Interactions in Symbiotic Nitrogen Fixation - (Proceedings) - (01-May-01)
Aluminum Tolerance in Medicago Sativa and Medicago Truncatula - (Abstract Only) - (19-Nov-00)
Synthesis of Biodegradable Plastics in Alfalfa Plants - (Abstract Only) - (19-Nov-00)
Maturity and Plant Density Effects on Leaf and Stem Quality in Alfalfa - (Abstract Only) - (05-Nov-00)
Method Validation by Ring Testing to Establish International Standards for Seed Testing; a Case Study - (Abstract Only) - (24-Jul-00)
The Biology and Politics of Alfalfa Electricity - (Abstract Only) - (19-Jul-00)
Functional Analysis of Medicago Truncatula Expressed Sequence Tags Associated with Plant-Microbe Interactions - (Abstract Only) - (17-Jul-00)
Synthesis of Biodegradable Plastics in Alfalfa Plants - (Abstract Only) - (17-Jul-00)
Aluminum Tolerance in Transgenic Alfalfa (Medicago Sativa L.) - (Abstract Only) - (17-Jul-00)
The Biology and Politics of Alfalfa Electricity - (Abstract Only) - (17-Jul-00)
Functional Genomics of the Model Legume Medicago Truncatula: Analysis of Ests Associated with Plant-Microbe Interaction - (Abstract Only) - (26-Jun-00)
Alfalfa Biomass Production: Plant Density and Maturity Effects on Yield and Quality - (Abstract Only) - (01-Nov-99)
Increased Herbage Yield in Alfalfa Associated with Selection for Fibrous and Lateral Roots - (Peer Reviewed Journal)
Lamb, J.F., Samac, D.A., Barnes, D.K., Henjum, K.I. 2000. Increased herbage yield in alfalfa associated with selection for fibrous and lateral roots. Crop Science. 40:693-699.
Registration of a Regenerating Ineffectively Nodulated Alfalfa Germplasm - Umn 3176 - (Peer Reviewed Journal) - (30-Sep-99)
A Pcr Assay for Identification of Clavibacter Michiganensis Subsp. Insidiosus - (Proceedings) - (30-Aug-99)
Pcr Assay for Identification of Clavibacter Michiganensis Subsp. Insidiosus - (Abstract Only) - (16-Aug-99)
Use of Culture Plating, Polymerase Chain Reaction, and Near Infrared Spectroscopy to Screen Alfalfa Populations for the Presence of Vascular Wilt Pathogens - (Abstract Only) - (08-Aug-99)
Promoters for Constitutive and Tissue-Specific Expression of Transgenes in Alfalfa - (Abstract Only) - (03-Aug-99)
Suppression of Root-Lesion Nematodes by Expression of Rice Protease Inhibitor Genes in Alfalfa - (Abstract Only) - (26-Jul-99)
Age-Dependent and Pathogen-Induced Expression of An Alfalfa Class 1 Chitinase Gene - (Abstract Only) - (26-Jul-99)
Genetic Transformation of Alfalfa (Medicago Sativa L.) for Increased Tolerance to Acid Soils - (Abstract Only) - (26-Jul-99)
The Alfalfa (Medicago Sativa) Tdy1 Gene Encodes a Mitogen-Activated Protein Kinase Homolog - (Peer Reviewed Journal)
Schoenbeck, M.A., Samac, D.A., Fedorova, M., Gregerson, R.G., Gantt, J.S., Vance, C.P. 1999. The alfalfa (Medicago sativa) TDY1 gene encodes a mitogen-activated protein kinase homolog. Molecular Plant Microbe Interactions. 12(10):882-893.
Decreased Nadh Glutamate Synthase Activity in Nodules and Flowers of Alfalfa (Medicago Sativa L.) Transformed with An Antisense Glutamate Synthase Transgene - (Peer Reviewed Journal) - (14-Apr-99)
Nadh-Glutamate Synthase (Gogat) in Alfalfa Root Nodules: Genetic Regulation and Cellular Expression - (Peer Reviewed Journal) - (08-Mar-99)
Aspartate Aminotransferase in Alfalfa Nodules: Localization of Mrna Duringeffective and Ineffective Nodule Development and Promoter Analysis - (Peer Reviewed Journal) - (15-Dec-98)
Transmission Frequency of Clavibacter Michiganensis Subsp. Insidiosus to Alfalfa Seed and Identification of the Bacterium by Pcr - (Peer Reviewed Journal) - (21-Aug-98)
Maturity and Plant Density Effects on Stem and Leaf Traits for Alfalfa Biomass Production - (Abstract Only) - (03-Aug-98)
Identification and Utilization of Plant Protein Inhibitors for Insect Control in Alfalfa - (Abstract Only) - (03-Aug-98)
Increased Aluminum Tolerance in Transgenic Plants by Altered Expression of Malate Dehydrogenase - (Abstract Only) - (01-Jul-98)
Alfalfa (Medicago Sativa L.) Resistance to the Root-Lesion Nematode, Pratylenchus Penetrans: Defense-Response Gene Mrna and Isoflavonoid Phytoalexin Levels in Roots - (Peer Reviewed Journal) - (15-Jun-98)
Inhibition of Alfalfa Root Nodule Phosphoenolpyruvate Carboxylase Through An Antisense Strategy Impacts Nitrogen Fixation and Plant Growth - (Peer Reviewed Journal) - (28-Apr-98)
Improving Stress Tolerance in Alfalfa by Gene Transfer - (Proceedings) - (27-Apr-98)
Nitrogen Assimilation in Alfalfa: Isolation and Characterization of An Asparagine Synthetase Gene Showing Enhanced Expression in Root Nodules and Dark-Adapted Leaves - (Peer Reviewed Journal) - (01-Sep-97)
Nodule Carbon Metabolism: Organic Acids for N2 Fixation - (Proceedings) - (25-Aug-97)
Promoter Analysis of An Asparagine Synthetase Gene Showing Enhanced Expression in Alfalfa Root Nodules and Dark Adapted Leaves - (Abstract Only) - (02-Aug-97)
The Alfalfa Tdy1 Gene Encodes a Map Kinase Homologue - (Abstract Only) - (02-Aug-97)
Modulation of Nitrogen Metabolism in Transgenic Alfalfa - (Abstract Only) - (02-Aug-97)
Resistance Mechanism of Alfalfa to the Root-Lesion Nematode - (Abstract Only) - (17-Jul-97)
Delay of Leaf Senescence in Transgenic Alfalfa Plants - (Abstract Only) - (17-Jul-97)
Alfalfa Biomass: Selection and Breeding - (Abstract Only) - (17-Jul-97)
Evidence from Antisense and Inhibitor Studies Suggests a Role for Pepc in N2 Fixation? - (Abstract Only) - (30-Jun-97)
Biological Control of Root-Lesion Nematodes in Alfalfa by Streptomyces - (Abstract Only) - (01-Jun-97)
Delay of Leaf Senescence in Transgenic Alfalfa Plants Expressing a Gene for Cytokinin Biosynthesis - (Abstract Only) - (07-Apr-97)
Modulation of Nitrogen Assimilation in Transgenic Alfalfa - (Abstract Only) - (07-Apr-97)
Alfalfa Nadh-Dependent Glutamate Synthase: Structure of the Gene and Importance in Symbiotic N2 Fixation - (Peer Reviewed Journal) - (30-Jul-96)
Mechanism of Biological Control of a Disease Suppressive Streptomyces Isolate - (Abstract Only) - (14-Jul-96)
Effect of Root-Lesion Nematodes on Mrna Levels of Defense-Response Genes in Alfalfa Roots - (Abstract Only) - (14-Jul-96)
Alfalfa Aspartate Aminotransferase-2: in Situ Expression of Mrna in Root Nodules and Analysis of the Putative Promoter Region of the Gene - (Abstract Only) - (14-Jul-96)
Development and Utilization of An Agrobacterium-Mediated Transformation System for Alfalfa - (Abstract Only) - (17-Jun-96)
Forage Yield, Dormancy, and Disease Resistance Response to Two Cycles of Divergent Selection for Root Architecture in Alfalfa - (Abstract Only) - (17-Jun-96)
Biological Control of Fungi Causing Alfalfa Seedling Damping-off with a Pathogen-Suppressive Strain of Streptomyces - (Peer Reviewed Journal) - (10-Jun-96)
Reduction of Nodule-Enhanced Nadh-Glutamate Synthase Activity in Transgenic Alfalfa - (Abstract Only) - (01-Jun-96)
Localization and Regulation of the Nadh-Dependent Glutamate Synthase in Alfalfa Root Nodules - (Abstract Only) - (01-Jun-96)
Characterization of a Nodule Enhanced Asparagine Synthetase Gene from Alfalfa - (Abstract Only) - (01-Jun-96)
First Report of Phytophthora Megasperma F. Sp. Medicaginis Causing Phytophthora Root Rot on Annual Medicago Spp. - (Peer Reviewed Journal) - (12-Apr-96)
Alfalfa Root Nodule Phosphoenolpyruvate Carboxylase and Nadh-Glutamate Synthase: Critical Effectors of Nitrogen Metabolism - (Abstract Only) - (09-Nov-95)
Alfalfa Root Nodule Phosphoenolpyruvate Carboxylase and Nadh-Glutamate Synthase: Critical Affectors of Nitrogen Metabolism - (Abstract Only) - (14-Oct-95)
Biochemical and Molecular Dissection of Nitrogen Assimilation in Alfalfa Root Nodules - (Book / Chapter) - (02-Sep-95)
Frequency of Seed Transmission of Alfalfa Bacterial Wilt and Detection by Apcr Assay - (Abstract Only) - (01-Jul-95)
Pythium Seed Rot and Damping-off Resistance - (Other) - (19-Jun-95)
Analyses of Phosphoenolpyruvate Carboxylase Gene Structure and Expression in Alfalfa Nodules - (Abstract Only) - (01-Jun-95)
A Map Kinase Homologue from Alfalfa Root Nodule Library - (Abstract Only) - (01-Jun-95)
Characterization of a Nodule Enhanced Asparagine Synthetase Gene from Alfalfa - (Abstract Only) - (01-Jun-95)
Last Modified: 9/19/2012
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