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Sullivan, M.L., Hatfield, R.D., Thoma, S.L., Samac, D.A. 2004. Cloning and characterization of red clover polyphenol oxidase cDNAs and expression of active protein in Escherichia coli and transgenic alfalfa. Plant Physiology. 136:3234-3244. [pdf 259k]





O'Neill, N.R., Bauchan, G.R., Samac, D.A. 2003. Reactions in the annual Medicago spp. core germ plasm collection to Phoma medicaginis. Plant Disease. 87(5):557-562. [pdf 88 k]





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 216 k]


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 153 k]





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 532 k]


Tesfaye, M., Temple, S.J., Allan, D.L., Vance, C.P., Samac, D.A. 2001. Overexpression of malate dehydrogenase in transgenic alfalfa enhanced organic acid synthesis and confers tolerance to aluminum. Plant Physiology. 127:1836-1844. [pdf 200 k]





Lamb, J.F.S., 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 108 k]


Schoenbeck, M.A., Temple, S.J., Trepp, G.B., Blumenthal, J.M., Samac, D.A., Gantt, J.S., Hernandez, G., Vance, C.P. 2000. Decreased NADH glutamate synthase activity in nodules and flowers of alfalfa (Medicago sativa L.) transformed with an antisense glutamate synthase transgene. Journal of Experimental Botany. 51(342):29-39. [pdf 407 k]





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 322 k]


Trepp, G.B., van de Mortel, M., Yoshioka, H., Miller, S.S., Samac, D.A., Gantt, J.S., Vance, C.P. 1999. NADH-glutamate synthase in alfalfa root nodules. Genetic regulation and cellular expression. Plant Physiology. 119:817-828. [pdf 2,412 k]


Yoshioka, H., Gregerson, R.G., Samac, D.A., Hoevens, K.C.M., Trepp, G., Gantt, J.S., Vance, C.P. 1999. Aspartate aminotransferase in alfalfa nodules: localization of mRNA during effective and ineffective nodule development and promoter analysis. Molecular Plant Microbe Interactions. 12(4):263-274. [pdf 594 k]





Baldridge, G.D., O'Neill, N.R., Samac, D.A. 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. 38:999-1010. [pdf 147 k]


Samac, D.A., Nix, R.J., Oleson, A.E. 1998. Transmission frequency of Clavibacter michiganensis subsp. insidiosus to alfalfa seed and identification of the bacterium by PCR. Plant Disease. 82(12):1362-1367. [pdf 162 k]





Pathirana, M.S., Samac, D.A., Roeven, R., Yoshioka, H., Vance, C.P., Gantt, J.S. 1997. Analyses of phosphoenolpyruvate carboxylase gene structure and expression in alfalfa nodules. The Plant Journal. 12(2):293-304. [pdf 1,135 k]





Jones, C.R., Samac, D.A. 1996. Biological control of fungi causing alfalfa seedling damping-off with a disease-suppressive strain of Streptomyces. Biological Control. 7:196-204. [pdf 100 k]





Vance, C.P., Miller, S.S., Gregerson, R.G., Samac, D.A., Robinson, D.L., Gantt, J.S. 1995. Alfalfa NADH-dependent glutamate synthase: structure of the gene and importance in symbiotic N2 fixation. The Plant Journal. 8(3):345-358. [pdf 1,942 k]





Samac, D.A., Shah, D.M. 1991. Developmental and pathogen-induced activation of the Arabidopsis acidic chitinase promoter. The Plant Cell. 3:1063-1072. [pdf 1,046 k]





Samac, D.A., Hironaka, C.M., Yallaly, P.E., Shah, D.M. 1990. Isolation and characterization of the genes encoding basic and acidic chitinase in Arabidopsis thaliana. Plant Physiology. 93:907-914. [pdf 870 k]