James W. Buck Professor - Diseases of soybean, wheat and ornamentals Plant Pathology

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Portrait of James W. Buck

Academic Background

Ph.D. Plant Pathology, Univ. Wisconsin-Madison, 1998
M.S. Plant Sciences, Univ. Western Ontario, 1992
B.S. Botany, Brandon Univ., 1990

Research Interests and Current Efforts

My research is focused on the biology and management of diseases of soybean, wheat and ornamental plants. Specific pathosystems include rust, stem canker and frogeye leaf spot of soybean; leaf rust, stripe rust and fusarium head blight of of wheat; and rusts affecting ornamental plants. I work closely with UGA plant breeders Drs. Zenglu Li and Mohammed Mergoum to produce high yielding, disease resistant soybean and wheat varieties, respectively.

Recent Publications

Sapkota, S., Hao, Y., Johnson, J. W., Buck, J., and Mergoum, M. 2019. Genome-wide association studies in of a worldwide collection of wheat genotypes reveals novel QTL for leaf rust resistance. Plant Genome Accepted pending revisions

DeLong, J.A., Stewart, J.E., Valencia-Botin, A., Pedley, K.F., Buck, J.W., and Brewer, M.T. 2019. Mining the Uromyces transversalis genome for molecular markers reveals a lack of genotypic diversity among gladiolus rust isolates. Peer J accepted pending revisions.

Sapkota, S., Hao, Y., Johnson, J. W., Lopez, B., Bland, D.E., Chen, Z., Sutton, S., Buck, J., Youmans, J. and Mergoum, M. 2019. Genetic mapping of a major gene for leaf rust resistance in soft red winter wheat. Mol. Breeding. 39:8

Emmitt, R.S., Stevenson, K.L, Martinez-Espinoza, A., and Buck, J.W. 2018. Fungicide sensitivity profiles of Puccinia hemerocallidis to pyraclostrobin, flutolanil, and thiophanate-methyl. Crop Prot. 110:103-107. https://doi.org/10.1016/j.cropro.2018.04.008

Childs, S.P., Buck, J.W., and Li, Z. 2018. Breeding soybeans with resistance to soybean rust (Phakopsora pachyrhizi). Plant Breeding http://dx.doi.org/10.1111/pbr.12595

Moparthi, S., Bradshaw, M., Frost, K., and Buck, J.W. 2018. First Report of powdery mildew caused by Golovinomyces spadiceus on Abelmoschus esculentus (okra). Plant Dis. Note https://doi.org/10.1094/PDIS-01-18-0179-PDN

Johnson, J.J., Chen, Z., Buck, J.W., Buntin, G.D.,  Babar, Md A., Mason, R.E., Harrison, S.A., Murphy, J.P., Ibrahim, A.M.H., Sutton, R.L., Simoneaux, B.E., Bockelman, H.E., Baik, B-K., Marshall, D., Cowger, C., Brown-Guedira, G.L., Kolmer, J.A., Jin, Y., Chen, X., Cambron, S.E., and Mergoum, M.. 2018. ‘Savoy’, an adapted soft red winter wheat cultivar for Georgia and the southeast regions of the United States. J. Plant Reg. 12:85-89. doi:10.3198/jpr2017.06.0039crc

Childs, S.P., King, Z., Walker, D., Harris, D., Pedley, K.F., Buck, J., Boerma, H.R., and Li, Z. 2018. Discovery of a seventh Rpp soybean rust resistance locus in soybean accession PI 605823. Theor. Appl. Genetics. 131:27-41. https://doi.org/10.1007/s00122-017-2983-4.

Emmitt, R.S., and Buck, J.W. 2017. Management of daylily rust with different fungicides and fungicide combinations. Plant Health Prog. 18:162-165.

Campbell, M., Li, Z., and Buck, J.W. 2017. Development of southern stem canker disease on soybean seedlings in the greenhouse using a modified toothpick inoculation assay. Crop Prot. 100:57-64. https://doi.org/10.1016/j.cropro.2017.05.026

Johnson, J.W., Chen, Z., Buck, J.W., Buntin, G.D., Babar, M.A., Mason, R.E., Harrison, S.A., Murphy, J.P., Ibrahim, A.M.H., Sutton, R.L., Simoneaux, B.E., Bockelman, H.E., Baik, B-K., Marshall, D., Cowger, C., Brown-Guedira, G. L., Kolmer, J. A., Jin, Y., Chen, X., Cambron, S.E., and Mergoum, M. 2017. 'GA 03564-12E6': A high-yielding soft red winter wheat cultivar adapted to Georgia and the South East regions of the United States. J. Plant Reg. 11:159 doi:10.3198/jpr2016.07.0036crc

King, Z, Childs, S.P., Harris, D.E., Pedley, K.F., Buck, J.W., Boerma, R.H., and Li, Z., 2017. A new soybean rust resistance allele from PI 423972 at the Rpp4 locus. Molecular Breeding. 37:62. doi:10.1007/s11032-017-0658-0

Petkar, A., Langston, D.B., Buck, J.W., Stevenson, K.L., and Ji, P. 2017. Sensitivity of Fusarium oxysporum f. sp. niveum to prothioconazole and thiophanate-methyl and gene mutation conferring resistance to thiophanate-methyl. Plant Dis. 101:366-371.