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United States Department of Agriculture

Agricultural Research Service

Related Topics

Christian Mark Tobias
Crop Improvement and Genetics Research
Research Molecular Biologist

Phone: (510) 559-6172
Fax: (510) 559-5818
Room 2101
USDA, ARS, PWA, WRRC-GGD
800 BUCHANAN STREET
ALBANY, CA, 94710

Projects
Genetic Foundations for Bioenergy Feedstocks
Appropriated (D)
  Accession Number: 427387

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Switchgrass (Panicum virgatum L) flag leaf transcriptomes reveal molecular signatures of leaf development, senescence, and mineral dynamics - (Peer Reviewed Journal) - (16-Aug-14)
Contrasting metabolism in perenniating structures of upland and lowland switchgrass plants late in the growing season Reprint Icon - (Peer Reviewed Journal)
Palmer, N.A., Saathoff, A.J., Tobias, C.M., Twigg, P., Xia, Y., Vogel, K.P., Madhavan, S., Sattler, S.E., Sarath, G. 2014. Contrasting metabolism in perenniating structures of upland and lowland switchgrass plants late in the growing season. PLoS One. 9/1-11.
Genetic Linkage Mapping and Segregation Distortion in a Three-Generation Four-Founder Population of Panicum vigatum (L.) - (Peer Reviewed Journal)
Li, G., Serba, D.D., Saha, M.C., Bouton, J.H., Lanzatella-Craig, C., Tobias, C.M. 2014. Genetic Linkage Mapping and Segregation Distortion in a Three-Generation Four-Founder Population of Panicum vigatum (L.). Genes, Genomes, and Genomics. DOI: 10.1534/g3.113.010165.
Global changes in mineral transporters in tetraploid switchgrasses (Panicum virgatum L.) Reprint Icon - (Peer Reviewed Journal)
Palmer, N.A., Saathoff, A., Donze-Reiner, T., Waters, B., Heng-Moss, T., Twigg, P., Tobias, C.M., Sarath, G. 2014. Global changes in mineral transporters in tetraploid switchgrasses (Panicum virgatum L.). Frontiers in Plant Science. 4:1-12.
A statistical model for QTL mapping in polysomic autotetraploids underlying double reduction - (Peer Reviewed Journal)
Xu, F., Lyu, Y., Tong, C., Wu, W., Zhu, X., Yin, D., Yan, Q., Zhang, J., Pang, X., Tobias, C.M., Wu, R. 2013. A statistical model for QTL mapping in polysomic autotetraploids underlying double reduction. Briefings in Bioinformatics. DOI: 10.1093/bib/bbt073.
Towards uncovering the roles of switchgrass peroxidases in plant processes Reprint Icon - (Peer Reviewed Journal)
Saathoff, A.J., Donze, T., Palmer, N.A., Bradshaw, J., Heng-Moss, T., Twigg, P., Tobias, C., Lagrimini, M., Sarath, G. 2013. Towards uncovering the roles of switchgrass peroxidases in plant processes. Frontiers in Plant Biotechnology. 4:1-12. doi 10.3389/fpls.2013.00202.
Abolishing activity against ascorbate in a cytosolic ascorbate peroxidase from switchgrass Reprint Icon - (Peer Reviewed Journal)
Kovacs, F., Sarath, G., Woodworth, K., Twigg, P., Tobias, C.M. 2013. Abolishing activity against ascorbate in a cytosolic ascorbate peroxidase from switchgrass. Phytochemistry. doi 10.1016/j.phytochem.2013.05.016.
Comparative analysis of tandem repeats from hundreds of species reveals unique insights into centromere evolution - (Peer Reviewed Journal)
Melters, D.P., Bradnan, K., Young, H., Telis, N., May, M., Ruby, G.J., Sebra, R., Peluso, P., Eid, J., Rank, D., Garcia, J., Derisi, J., Smith, T.P., Tobias, C.M., Ross-Ibarra, J., Korf, I., Chan-Simon, W. 2013. Comparative analysis of tandem repeats from hundreds of species reveals unique insights into centromere evolution. Genome Biology. doi:10.1186/gb-2013-14-1-r10.
Comparative analysis of tandem repeats from hundreds of species reveals unique insights into centromere evolution - (Peer Reviewed Journal)
Melters, D.P., Bradnam, K.R., Young, H.P., Telis, N., May, M.R., Ruby, J., Sebra, R., Peluso, P., Eid, J., Rank, D., Garcia, J., Derisi, J.L., Smith, T.P., Tobias, C.M., Ross-Ibarra, J., Korf, I., Chan, S.W. 2013. Comparative analysis of tandem repeats from hundreds of species reveals unique insights into centromere evolution. Genome Biology. 14(1):R10. doi:10.1186/gb-2013-14-1-r10.
Switchgrass Genomics - (Book / Chapter)
Tobias, C.M. 2013. Switchgrass Genomics. Bioenergy Feedstocks: Breeding and Genetics. 1:33-48.
SNP discovery with EST and NextGen sequencing in switchgrass (panicum virgatum L.) Reprint Icon - (Peer Reviewed Journal)
Ersoz, E.S., Wright, M.H., Pangilinan, J.L., Sheehan, M.J., Tobias, C.M., Casler, M.D., Buckler IV, E.S., Costich, D. 2012. SNP discovery with EST and NextGen sequencing in switchgrass (panicum virgatum L.). PLoS One. 7(9):e44112.
A multivalent three-point linkage analysis model of autotetraploids - (Peer Reviewed Journal)
Lu, Y., Yang, X., Tong, C., Li, X., Feng, S., Wang, Z., Pang, X., Wang, Y., Wang, N., Tobias, C.M., Wu, R. 2012. A multivalent three-point linkage analysis model of autotetraploids. Briefings in Bioinformatics. doi:10.1093/bib/bbs051.
Karyotype variation is indicative of subgenomic and ecotypic differentiation in switchgrass - (Peer Reviewed Journal)
Young, H., Sarath, G., Tobias, C.M. 2012. Karyotype variation is indicative of subgenomic and ecotypic differentiation in switchgrass. Biomed Central (BMC) Plant Biology. 12:117.
Switchgrass PviCAD1: Understanding residues important for substrate preferences and activity - (Peer Reviewed Journal) - (24-Apr-12)
A unifying framework for bivalent multilocus linkage analysis of allotetraploids - (Peer Reviewed Journal)
Yang, X., Lu, Y., Pang, X., Tong, C., Wang, Z., Li, X., Feng, S., Tobias, C.M., Wu, R. 2012. A unifying framework for bivalent multilocus linkage analysis of allotetraploids. Briefings in Bioinformatics. 14:96-108.
Next generation sequencing of crown and rhizome transcriptome from an upland, tetraploid switchgrass Reprint Icon - (Peer Reviewed Journal)
Palmer, N.A., Saathoff, A.J., Kim, J., Benson, A., Tobias, C.M., Twigg, P., Vogel, K.P., Madhavan, S., Sarath, G. 2012. Next generation sequencing of crown and rhizome transcriptome from an upland, tetraploid switchgrass. BioEnergy Research. 5:649-661. DOI 10.1007/s12155-011-9171-1.
The switchgrass genome: tools and strategies Reprint Icon - (Peer Reviewed Journal)
Casler, M.D., Tobias, C.M., Kaeppler, S.M., Buell, R., Wang, Z., Cao, P., Ronald, P. 2011. The switchgrass genome: tools and strategies. The Plant Genome. 4:273-282.
Chloroplast genome variation in upland and lowland switchgrass Reprint Icon - (Peer Reviewed Journal)
Young, H.A., Lanzatella-Craig, C., Sarath, G., Tobias, C.M. 2011. Chloroplast genome variation in upland and lowland switchgrass. PLoS One. 6(8): e23980. Available: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0023980.
Downregulation of Cinnamyl-Alcohol Dehydrogenase in Switchgrass by Rna Silencing Results in Enhanced Glucose Release after Cellulase Treatment - (Peer Reviewed Journal)
Saathoff, A.J., Sarath, G., Chow, E.K., Dien, B.S., Tobias, C.M. 2011. Downregulation of cinnamyl-alcohol dehydrogenase in switchgrass by RNA silencing results in enhanced glucose release after cellulase treatment. PLoS One. 6(1):e16416. DOI: 10.1371/journal.pone.0016416.
EM Algorithm for Mapping Quantitative Trait Loci in Multivalent Tetraploids - (Peer Reviewed Journal)
Li, J., Das, K., Fu, G., Lie, Y., Tobias, C.M., Wu, R. 2010. EM Algorithm for mapping quantitative trait loci in multivalent tetraploids. International Journal of Plant Genomics. Volume 2010 (2010), Article ID 216547. Available: http://www.hindawi.com/journals/ijpg/2010/216547/.
Hierarchical classification of switchgrass using SSR and chloroplast sequences: ecotypes, ploidies, gene pools, and cultivars Reprint Icon - (Peer Reviewed Journal)
Zalapa, J., Price, D., Kaeppler, S., Tobias, C.M., Okada, M., Casler, M.D. 2010. Hierarchical classification of switchgrass using SSR and chloroplast sequences: ecotypes, ploidies, gene pools, and cultivars. Theoretical and Applied Genetics. 122:805-817.
Single-locus EST-SSR markers for characterization of population genetic diversity and structure across ploidy levels in switchgrass (Panicum virgatum L.) - (Peer Reviewed Journal) - (11-Oct-10)
Switchgrass contains two cinnamyl alcohol dehydrogenases involved in lignin formation Reprint Icon - (Peer Reviewed Journal)
Saathoff, A.J., Tobias, C.M., Sattler, S.E., Haas, E.E., Twigg, P., Sarath, G. 2011. Switchgrass contains two cinnamyl alcohol dehydrogenases involved in lignin formation. BioEnergy Research. 4(2):120-133.
Biochemical and Genetic Characterization of Three Switchgrass CADs - (Abstract Only)
Saathoff, A.J., Tobias, C.M., Sattler, S.E., Haas, E.E., Twigg, P., Sarath, G. 2010. Biochemical and Genetic Characterization of Three Switchgrass CADs. Abstract only - presented at Biotechnology for Fuels and Chemicals Symposium Proceedings in Clearwater, FL, April 19-22, 2010. Not published elsewhere.
Discovering Traits Controlling Winter-hardiness and Spring Regrowth in Diverse Switchgrass Germplasm - (Abstract Only)
Sarath, G., Vogel, K.P., Tobias, C.M., Soundararajan, M., Twigg, P., Saathoff, A.J., Okada, M. 2010. Discovering Traits Controlling Winter-hardiness and Spring Regrowth in Diverse Switchgrass Germplasm. Abstract presented at Biotechnology for Fuels and Chemicals Symposium Proceedings April 19-22, 2010 in Clearwater, FL. Not published anywhere else.
Complete Switchgrass Genetic Maps Reveal Subgenome Collinearity, Preferential Pairing, and Multilocus Interactions - (Peer Reviewed Journal)
Okada, M., Lanzatella-Craig, C., Saha, M., Bouton, J., Wu, R., Tobias, C.M. 2010. Complete Switchgrass Genetic Maps Reveal Subgenome Collinearity, Preferential Pairing and Multilocus Interactions. Genetics. 185:745-760.
Est-Ssr Markers Discriminate Switchgrass Ecotypes Reprint Icon - (Abstract Only)
Zalapa, J., Casler, M.D., Kaeppler, S., De Leon, N., Tobias, C.M. 2010. EST-SSR Markers Discriminate Switchgrass Ecotypes. 2010 Genomic Science Contractor-Grantee and Knowledgebase Workshop. Available: www.orau.gov/gtl2010/postedabstracts.htm
Dihaploid stocks for switchgrass isolated by a screening approach - (Peer Reviewed Journal)
Young, H.A., Hernlem, B.J., Anderton, A.L., Lanzatella-Craig, C., Tobias, C.M. 2010. Dihaploid stocks for switchgrass isolated by a screening approach. BioEnergy Research. 3:305-313.
An SSR-Based Genetic Linkage Map of the Model Grass Brachypodium distachyon Reprint Icon - (Peer Reviewed Journal)
Garvin, D.F., Mckenzie, N., Vogel, J.P., Mockler, T.C., Blankenheim, Z., Wright, J., Huo, N., Cheema, J.J., Dicks, J., Hayden, D.M., Gu, Y.Q., Tobias, C.M., Chang, J.H., Chu, A., Trick, M., Michael, T.P., Bevan, M.W., Snape, J.W. 2010. An SSR-Based Genetic Linkage Map of the Model Grass Brachypodium distachyon. Genome. 53(1):1-13.
A Genome May Reduce Your Carbon Footprint - (Review Article)
Tobias, C.M. 2009. A GENOME MAY REDUCE YOUR CARBON FOOTPRINT. The Plant Genome. 2:5-8.
Impact of Divergent Selection on the Abundance and Activities of Lignin Biosynthetic Enzymes in Switchgrass, and Characterization of Recombinant Switchgrass CAD and COMT Proteins - (Abstract Only)
Saathoff, A.J., Palmer, N.A., Tobias, C.M., Twigg, P., Sattler, S.E., Haas, E.J., Mitchell, R., Vogel, K.P., Sarath, G. 2009. Impact of Divergent Selection on the Abundance and Activities of Lignin Biosynthetic Enzymes in Switchgrass, and Characterization of Recombinant Switchgrass CAD and COMT Proteins. p. 47 Abstracts 31st Symposium on Biotechnology for Fuels and Chemicals, Soc. for Industrial Microbiology. May 3-6, 2009, San Francisco, CA.
Comparative Genomes in Switchgrass Using 61,585 High-Quality EST - (Peer Reviewed Journal)
Tobias, C.M., Sarath, G., Twigg, P., Lindquist, E., Pangilinan, J., Penning, B., Barry, K., Carpita, N., Lazo, G.R. 2008. Comparative Genomics in Switchgrass Using 61,585 High-Quality EST. The Plant Genome. 1:111-124
Genic Microsatellite Markers Derived from Est Sequences of Switchgrass (Panicum Virgatum L.) - (Peer Reviewed Journal)
Tobias, C.M., Hayden, D.M., Twigg, P., Sarath, G. 2006. Genic microsatellite markers derived from EST sequences of switchgrass (Panicum virgatum L.). 6:185-187. Molecular Ecology Notes.
Analysis of Expressed Sequence Tags and the Identification of Associated Short Tandem Repeats in Switchgrass - (Peer Reviewed Journal)
Tobias, C.M., Twigg, P., Hayden, D.M., Vogel, K.P., Mitchell, R., Lazo, G.R., Chow, E.K., Sarath, G. 2005. Analysis of expressed sequence tags and the identification of associated short tandem repeats in switchgrass. Theoretical and Applied Genetics. 111: 956-964.
Application of Functional Genomic Tools for Exploring Switchgrass Feedstocks Improved Through Divergent Selection - (Abstract Only)
Sarath, G., Vogel, K.P., Mitchell, R., Twigg, P., Tobias, C.M., Baird, L.M. 2005. Application of functional genomic tools for exploring switchgrass feedstocks improved through divergent selection. Biotechnology for Fuels and Chemicals Symposium Proceedings.#3A-01.
Structure of the Cinnamyl-Alcohol Dehydrogenase Gene Family in Rice and Promoter Activity of a Member Associated with Lignification. - (Peer Reviewed Journal)
Tobias, C.M., Chow, E.K. 2004. Structure of the Cinnamyl-Alcohol Dehydrogenase Gene Family in Rice and Promoter Activity of a Member Associated with Lignification. Planta. 220:678-688.
ARS News Articles
Last Modified: 12/20/2014
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