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Sathoff, A.E., Lewenza, S., Samac, D.A. 2020. Plant defensin antibacterial mode of action against Pseudomonas species. BMC Microbiology. 20:1-11. [PDF]



Bonhomme, M., Navier, H., Hajri, A., Badis, Y., Miteul, H., Fariello, M., Samac, D.A., Dumas, B., Baranger, A., Jacquet, C., Pilet-Nayel, M. 2019. GWAS powered by a local score approach unravels the genomic bases of Medicago truncatula quantitative disease resistance to multiple Aphanomyces euteiches strains. Heredity. 2019(5):1-15. [PDF]

Castell-Miller, C.V., Samac, D.A. 2019. Sensitivity of Bipolaris oryzae isolates pathogenic on cultivated wild rice to the quinone outside inhibitor azoxystrobin. Plant Disease. 103:1910-1917. [PDF]

Lipps, S.M., Lenz, P., Samac, D.A. 2019. First report of bacterial stem blight of alfalfa caused by Pseudomonas viridiflava in California and Utah. Plant Disease. 103(12):3274.

Sathoff, A.E., Samac, D.A. 2019. Antibacterial activity of plant defensins. Molecular Plant-Microbe Interactions. 32(5):507-514. [PDF]

Sathoff, A.E., Velivelli, S., Shah, D.M., Samac, D.A. 2019. Plant defensin peptides have antifungal and antibacterial activity against human and plant pathogens. Phytopathology. 109:402-408. [PDF]



Ao, S., Dornbusch, M.R., Miller, S.S., Bucciarelli, B., Samac, D.A. 2018. First report of alfalfa (Medicago sativa L.) seed rot, seedling root rot, and damping off caused by Pythium spp. in Sudanese soil. Plant Disease. 102(5):1043. doi:10.1094/PDIS-09-17-1411-PDN. [PDF]

Cao, Y., Miller, S.S., Dornbusch, M.R., Castle, S., Lenz, P., Ferguson, J., Sadowsky, M.J., Nelson, M.S., Klatt, C., Samac, D.A. 2018. Widespread occurrence of Sinorhizobium meliloti with type IV secretion system. Symbiosis. 75(2):81-91. doi:10.1007/s13199-018-0547-2. [PDF]

Castle, S.C., Song, Z., Gohl, D.M., Gutknecht, J., Rosen, C., Sadowsky, M.J., Samac, D.A., Kinkel, L.L. 2018. DNA template dilution greatly impacts amplicon-sequencing based estimates of soil fungal diversity. Phytobiomes Journal. 2:100-107. [PDF]

Lu, Y., Ishimaru, C.A., Glazebrook, J., Samac, D.A. 2018. Comparative genomic analyses of Clavibacter michiganensis subsp. insidiosus and aggressiveness on Medicago truncatula. Phytopathology. 108:172-185. [PDF]

Peterson, J.J., Samac, D.A., Grau, C.R. 2018. First report of Fusarium wilt of alfalfa caused by Fusarium oxysporum f. sp. medicaginis in Wisconsin. Plant Disease. 102:447. [PDF]

Schmitt, A., Sathoff, A., Holl, C., Bauer, B., Samac, D.A., Carter, C.J. 2018. The major nectar protein of Brassica rapa is a non-specific lipid transfer protein with strong antifungal activity. Journal of Experimental Botany. 69(22):5587-5597. 



Nemchinov, L.G., Shao, J., Lee, M.N., Postnikova, O.A., Samac, D.A. 2017. Resistant and susceptible responses in alfalfa (Medicago sativa) to bacterial stem blight caused by Pseudomonas syringae pv. syringae. BMC Plant Biology. 12(12):e0189781. [PDF]

Tahir, M., Holland, C., Samac, D.A., Mollov, D. 2017. First report of 16SrII subgroup D phytoplasma in alfalfa in Sudan. Plant Disease. 101:2144. [PDF]

Grev, A., Wells, S.M., Samac, D., Martinson, K., Sheaffer, C. 2017. Forage accumulation and nutritive value of reduced lignin and reference alfalfa cultivars. Agronomy Journal.109:2749-2761. [PDF] 

Hu, W., Samac, D.A., Liu, X., Chen, S. 2017. Microbial communities in the cysts of soybean cyst nematode affected by tillage and biocide in a suppressive soil. Applied Soil Ecology. 119(2017):396-406. [PDF]

Berg, L., Miller, S., Dornbusch, M., Samac, D. 2017. Seed rot and damping-off of alfalfa in Minnesota caused by Pythium and Fusarium species. Plant Disease. [PDF]



  Castell-Miller, C.V., Gutierrez-Gonzalez, J.J., Tu, Z.J., Bushley, K.E., Hainaut, M., Henrissat, B., Samac, D.A. 2016. Genome assembly of the fungus Cochliobolus miyabeanus, and transcriptome analysis during early stages of infection on American wildrice (Zizania palustris L.). PLoS One. 11(6):e0154122. doi:10.1371/journal.pone.0154122. [PDF] 

  Harrison, J., Dornbusch, M.R., Samac, D.A., Studholme, D.J. 2016. Draft genome sequence of Pseudomonas syringae pv. syringae ALF3 isolated from alfalfa. Genome Announcements. 4(1):e01722-15. [PDF]



  Samac, D.A., Bucciarelli, B., Miller, S.S., Yang, S.H., O'Rourke, J.A., Shin, S., Vance, C.P. 2015. Transgene silencing of sucrose synthase in alfalfa (Medicago sativa L.) stem vascular tissue suggests a role for invertase in cell wall cellulose synthesis. Biomed Central (BMC) Plant Biology. 15:283. doi:10.1186/s12870-015-0649-4. [PDF] 

  O'Rourke, J.A., Fu, F., Bucciarelli, B., Yang, S.S., Samac, D.A., Lamb, J.F.S., Monteros, M.J., Graham, M.A., Gronwald, J.W., Krom, N., Li, J., Dai, X., Zhao, P.X., Vance, C.P. 2015. The Medicago sativa gene index 1.2: A web-accessible gene expression atlas for investigating expression differences between Medicago sativa subspecies. BioMed Central (BMC) Genetics. 16:502. DOI: 10.1186/s12864-015-1718-7. [PDF] 

  Lu, Y., Samac, D.A., Glazebrook, J., Ishimaru, C.A. 2015. Complete genome sequence of Clavibacter michiganensis subsp. insidiosus R1-1 using PacBio single-molecule real-time technology. Genome Announcements. 3(3):e00396-15. [PDF] 

  Vail, A.W., Wang, P., Uefuji, H., Samac, D.A., Vance, C.P., Wackett, L.P., Sadowsky, M.J. 2015. Biodegradation of atrazine by three transgenic grasses and alfalfa expressing a modified bacterial atrazine chlorohydrolase gene. Transgenic Research. 24:475-488. [PDF] 

  Samac, D.A., Schraber, S., Barclay, S. 2015. A mineral seed coating for control of seedling diseases of alfalfa suitable for organic production systems. Plant Disease. 99(5):614-620. [PDF]



  Zhang, T., Yu, L., McCord, P.H., Miller, D., Bhamidimarri, S., Johnson, D., Monteros, M., Ho, J., Reisen, P., Samac, D.A. 2014. Identification of molecular markers associated with Verticillium wilt resistance in alfalfa (Medicago sativa L.) using high-resolution melting. PLoS One. 9(12):e115953. [PDF]  

  Lamb, J.F., Jung, H.G., Samac, D.A. 2014. Environmental variability and/or stability of stem fiber content and digestibility in alfalfa. Crop Science. 54:2854-2863. DOI: 10.2135.cropsci2014.04.0323. [PDF] 

  Samac, D.A., Willbur, J.F., Behnken, L., Brietenbach, F., Blonde, G., Halfmann, B., Jensen, B., Sheaffer, C.C. 2014. First report of Stemphylium globuliferum causing Stemphylium Leaf Spot on alfalfa (Medicago sativa) in the United States. Plant Disease. 98(7):993. [PDF]

  Samac, D.A., Allen, S., Witte, D., Miller, D., Peterson, J. 2014. First report of race 2 of Colletotrichum trifolii causing anthracnose on alfalfa (Medicago sativa) in Wisconsin. Plant Disease. 98(6):843. [PDF] 

  Lamb, J.F., Jung, H.G., Russelle, M.P., Sheaffer, C.V., Samac, D.A., Vance, C.P. 2014. Alfalfa non-feed uses. Legume Perspectives. 4:38. [PDF]



  Samac, D.A., Halfman, B., Jensen, B., Brietenbach, F., Behnken, L., Willbur, J.F., Undersander, D., Blonde, G., Lamb, J.F.S. 2013. Evaluating headline fungicide on alfalfa production and sensitivity of pathogens to pyraclostrobin. Plant Health Progress. DOI: 10.1094/PHP-2013-0917-01-RS. [PDF] 

  Samac, D.A., Lamb, J.F.S., 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. 372:349-359. DOI:10.1007/s11104-013-1746-5. [PDF] 

  Nallu, S., Silverstein, K.A.T., 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. [PDF] 

  Tesfaye, M., Silverstein, K.A.T., Nallu, S., Wang, L., Botanga, C.J., Gomez, S.K., Costa, L.M., Harrison, M.J., 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. [PDF]



  Samac, D.A., Foster-Hartnett, D. 2012. Effect of glyphosate application on foliar diseases in glyphosate-tolerant alfalfa. Plant Disease. 96(8):1104-1110. [PDF] 

  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. [PDF] 

  Jung, H.G., Samac, D.A., Sarath, G. 2012. Modifying crops to increase cell wall digestibility. Plant Science. 185-186:65-77. [PDF]

  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 Soil. 351(1&2):121-134. [PDF]



  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. [PDF]


2006 - 2010

  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. [PDF] 

  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. [PDF] 

  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. [PDF] 

  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. [PDF]  

  Chandran, D., Sharopova, N., Ivashuta, S., Gantt, J.S., 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. [PDF] 

  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 gaertn. Sexual Plant Reproduction. 21:133-141. [PDF] 

  Castell-Miller, C.V., 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. [PDF]

  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. [PDF] 

  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. [PDF] 

  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. [PDF]

  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. [PDF] 

  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. [PDF]

  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. [PDF]  

  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. [PDF]

  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 United States. Plant Disease. 91:551-558. [PDF] 

  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. [PDF] 

  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. [PDF] 

  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. [PDF] 

  Tesfaye, M., Samac, D.A., Vance, C.P. 2006. Insights into symbiotic nitrogen fixation in Medicago truncatula. Molecular Plant-Microbe Interactions. 19:330-341. [PDF]


2001 - 2005

  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. [PDF] 

  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. [PDF] 

  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. [PDF] 

  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. [PDF] 

  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. [PDF] 

  Samac, D.A., Tesfaye, M., Dornbusch, M., Saruul, P., Temple, S.J. 2004. A comparison of constitutive promoters for expression of transgenes in alfalfa (Medicago sativa). Transgenic Research. 13:349-361. [PDF] 

  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. [PDF] 

  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. [PDF] 

  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. [PDF] 

  Samac, D., Smigocki, A. 2003. Expression of oryzacystatin I and II in alfalfa increases resistance to the root-lesion nematode. Phytopathology. 93(7):799-804. [PDF]  

  Samac, D., Willert, A., Mcbride, M., Kinkel, L. 2003. Effects of antibiotic-producing Streptomyces on nodulation and leaf spot in alfalfa. Applied Soil Ecology. 22:55-56. [PDF]

  Lamb, J., Sheaffer, C., Samac, D. 2002. Population density and harvest maturity effects on leaf and stem yield in alfalfa. Agronomy Journal. 95:635-641. [PDF] 

  De Haan, R., Shaeffer, C., Samac, D., Moynihan, J., Barnes, D. 2002. Evaluation of annual Medicago for upper Midwest agroecosystems. Journal of Agronomy and Crop Science. 188:417-425. [PDF] 

  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. [PDF] 

  Xiao, K., Kinkel, L.L, Samac, D.A. 2002. Biological control of Phytophthora root rots on alfalfa and soybean with Streptomyces. Biological Control. 23:285-295. [PDF]

  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. [PDF]  

  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. [PDF] 

  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. [PDF]


1996 - 2000

  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. [PDF] 

  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. [PDF]

  Samac, D., Nix, R.J., Oleson, A. 1998. Transmission frequency of Clavibacter michifanensis subsp. insidiosus to alfalfa seed and identification of the bacterium by PCR. Plant Disease. 82:1362-1367. [PDF]

  Baldridge, G., Oneill, N., Samac, D., 1998. Alfalfa (Medicago sativa L.) resistance to the root-lesion nematode Pratylenchus penetrans: Defense-response gene mRNA and isoflavonoid phytoalexin levels in roots. Plant Molecular Biology. [PDF]

  Schulze, J., Shi, L., Blumenthal, J., Samac, D., Gantt, J., Vance, C. 1998. Inhibition of alfalfa root nodule phosphoenolpyruvate carboxylase through an antisense strategy impacts nitrogen fixation and plant growth. Phytochemistry. 49(2):341-346. [PDF]

  Shi, L., Twary, S., Yoshioka, H., Gregeson, R., Miller, S., Samac, D., Gantt, J., Unkefer, P., Vance, C. 1997. Nitrogen assimilation in alfalfa; Isolation and characterization of an asparagine synthetase gene showing enhanced expression in root nodules and dark-adapted leaves. The Plant Cell. 9:1339-1356. [PDF] 

  Vance, C., Miller, S., Gregerson, R., Samac, D., Robinson, D., Gantt, J. 1996. Alfalfa NADH-dependent glutamate synthase: Structure of the gene and importance in symbiotic N2 fixation. Plant Journal. [PDF] 

  Jones, C., Samac, D. 1996. Biological control of fungi causing alfalfa seedling damping-off with a pathogen-suppressive strain of Streptomyces. Biological Control. 7:196-204. [PDF]

  De Haan, R., Sheaffer, C., Samac, D. 1996. First report of Phytophthora medicaginis causing phytophthora root rot on annual Medicago spp. Plant Disease. [PDF]


Book Chapters

  Samac, D., Castell-miller, C. 2017. Diseases of wild rice. [PDF] - Not yet published

  Malvick, D., Samac, D. 2017. Diseases of alfalfa (Medicago sativa L.). [PDF] - Not yet published

  Lucero, M., DeDolt, S., Unc, A., Ruiz-Font, A., Reyes, L.V., McCulley, R., Alderman, S., Dinkins, R., Barrow, J., Samac, D. 2013. Using microbial community interactions within plant microbiomes to advance an evergreen agricultural revolution. Plant and Social Sciences. [PDF] 

  Tesfeyaw, 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. [PDF]

  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. [PDF] 

  Kuster, H., Becker, A., Samac, D.A., Tesfaye, M. 2006. Transcriptomics. In: The Medicago truncatula Handbook. The Samuel Roberts Noble Foundation, Ardmore, OK. [PDF]

  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. [PDF] 

  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. [PDF]

  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. [PDF] 

  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. [PDF]



  Samac, D.A., Berg, L.E. 2015. Managing foliar and root rot diseases of alfalfa for improving yield and persistance. Western Alfalfa and Forage Symposium. December 2, 2015. Reno, NV. 

  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.  

  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. 

  Vance, C., Young, N., Samac, D., Vandenbosch, K., Gantt, S., Retzel, E. 2002. First international conference on legume genomics and genetics: Translation to crop improvement. International Conference on Legume Genomics and Genetics.

  Jung, H.J., Lin,, J., Lamb, J., Samac, D., Somers, D. 2001. Improving alfalfa fiber digestibility. Nutrition and Management Conference Proceedings. CD-0ROM. University of Illinois.

  Vance, C., Litjens, R., Schulze, J., Bucciarelli, B., Trepp, G., Samac, D., Allan, D., Tesfaye, M. 2001. Molecular control of carbon-nitrogen interactions in symbiotic nitrogen fixation. International Congress on Plant Nutrition Proceedings.

  Samac, D. 1999. A PCR assay for identification of clavibacter Michiganensis subsp. Insidiosus. International Seed Testing Association Plant Disease Committee Seed Health.

  Samac, D. Improving stress tolerance in alfalfa by gene transfer. Southern Pasture and Forage Crop Improvement Conference Proceedings.

  Vance, C., Miller, S., driscoll, B., Robinsons, D., Trepp, G., Gantt, J., Samac, D. 1997. Nodule carbon metabolism: Organic acids for N2 fixation. Nitrogen Fixation International Congress.


Review Articles

  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. [PDF] 

  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. [PDF] 

  Somers, D., Samac, D., Olhoft, P. 2002. Recent advances in legume transformation. Plant Physiology. 131:892-899. [PDF]


Trade Journals

  Samac, D.A., Ao, S., Dornbusch, M., Grev, A., Wells, S., Martinson, K., Shaeffer, C. 2017. Alfalfa lignin modification doesn't affect disease resistance. Forage Focus. December 2017 Pages 10-11. [PDF]

  Samac, D.A. 2017. Bacterial stem blight of alfalfa: A disease that increases frost damage. Forage Focus. March 2017 Pages 14-15. [PDF]

  Samac, D.A., Shaeffer, C.C., Wells, R.S. 2017. Importance of potassium in resistance to crown rot disease in alfalfa. Forage Focus. May 2017:16-17. [PDF]

  Samac, D.A. 2017. Lessons learned in managing alfalfa-grass mixtures. Forage Focus. August 2017 Pages 10-11. [PDF]

  Samac, D., Cao, Y., Lenz, P., Ferguson, J., Nelson, M., Miller, S., Dornbusch, M., Klatt, C., Castle, S., Sadowsky, M. 2016. Persistence and diversity of rhizobial bacteria nodulating alfalfa. Forage Focus. [PDF]

  Samac, D.A., Blosberg, J., Sathoff, A., Kinkel, L.L. 2014. New tools for combating seedling diseases of alfalfa in organic and conventional production systems. Forage Focus. December 2014 Pages 8-9. [PDF]

  Berg, L., Samac, D.A. 2015. Management of seedling damping-off of alfalfa. Forage Focus. August 2015. Page 16. [PDF]

  Samac, D.A., Klatt, C.G. 2015. Forage crops and soil microbes promote soil health. Forage Focus. May 2015 Page 10-11. [PDF] 

  Samac, D.A. 2015. Sustainable green biorefineries. Forage Focus. March 2015. Pages 10-11. [PDF]  

  Samac, D.A. 2014. Science from the field to your shopping cart. Forage Focus. August 2014. p. 6-7. [PDF] 

  Halfman, B., Blonde, G., Smith, D., Jensen, B., Samac, D.A., Behnken, L., Breitenbach, F. 2013. Wisconsin and Minnesota - a preliminary update on 2013 evaluation of Headline fungidice use on alfalfa. Forage Focus. December 2013. p. 22. [PDF] 

  Samac, D.A., Lamb, J.F. 2013. Protecting the (alfalfa) crown jewels. Forage Focus. August 2013. Pages 7-9. [PDF] 

  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. [PDF] 

  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. [PDF]

  Samac, D.A., Lamb, J.F., Russelle, M.P. 2012. Redesigning alfalfa for use in mixtures with grasses. Forage Focus. March 2012. p. 16-17. [PDF] 

  Russelle, M.P., Samac, D.A. 2012. What's holding us back? Raising the alfalfa yield bar. Forage Focus. December issue. p. 8-9. [PDF] 

  Samac, D.A., Behnken, L.M., Breitenbach, F. 2011. New strategies for managing leaf diseases of alfalfa. Forage Focus. December 2011. p. 7-8. [PDF]

  Samac, D.A. 2011. Alfalfa diseases 101: Diagnosing common and emerging disease problems. Forage Focus. August 2011. p. 4-5. [PDF] 

  Samac, D.A. 2009. Mycoleptodiscus crown and root rot of alfalfa: An emerging problem in Minnesota and Wisconsin Forage Focus. December issue. p. 4. [PDF]

  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. [PDF] 

  Tesfaye, M., Samac, D.A., Vance, C.P. 2006. Medicago GeneChips: A new tool for alfalfa improvement. Forage Focus. p. 3. [PDF] 

  Samac, D.A., Jung, H.G., Lamb, J.F. 2005. Development of alfalfa for ethanol production and other bioproducts. Forage Focus. p. 6. [PDF]



    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. (Extension Publication) [PDF]