Organizing Committee


Poster Presentations


Poster Presentations


Monitoring of soybean rust in Missouri and development of technologies for disease control

Presenter: N. W. Gross

All authors and affiliations: N. W. GROSS (1), C. J. Murphy (1), Z. D. Fang (1), C. A. Angel (1), S. Wright (1), F. J. Schmidt (2), J. T. English (1), and L. Sweets (1). (1) Division of Plant Sciences and (2) Division of Biochemistry, University of Missouri, Columbia, MO

Soybean rust monitoring, initiated in 2005, was continued in Missouri during 2006. This year, 24 sentinel plots were distributed over all soybean-producing regions of the state. Monitoring of plots began in May and continued through October. The 2006 growing season was characterized by fluctuating conditions before and after an approximate 6-week period of consistently high temperatures and minimal rainfall. Although rust was reported at several locations along the Gulf Coast over much of the growing season, disease symptoms were not found in Missouri monitoring plots until October 6. This initial observation occurred about 7 weeks earlier than in the fall of 2004. The initial observations from southeastern Missouri occurred approximately 3 weeks after a strong northward-moving front passed through the region. In addition to disease monitoring, we are continuing development of new technologies for defending soybean from rust infection. These technologies are based on defense peptides, selected from combinatorial libraries, that bind to receptors on the surface of Phakopsora pachyrhizi germlings. Peptides selected for affinity to germlings are now being evaluated for their abilities to inhibit germling growth and fungal development.

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