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A Role for Oomycete Biology in the
Development of Disease Resistant Soybean

USDA-NIFA Outreach Webcast

May 2015

By Kevin Fedkenheuer
Ph.D. Candidate
Department of Plant Pathology,
Physiology, and Weed Science
Virginia Tech
Phone: 201-694-4480

Michael Fedkenheuer, M.S.
John McDowell, Ph.D.

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Summary: In order to improve plant resistance against disease, we must understand the mechanisms which drive resistance and susceptibility. Phytophthora sojae, an oomycete pathogen, is the causal agent of soybean root and stem rot and was responsible for over 2% crop loss in 2006. In this presentation, we discuss how P. sojae infiltrates host cells and how host resistance (R) genes can prevent pathogen growth. Despite many management techniques, the Resistance to Phytophthora sojae (RPS) genes are most effective. Using this information, we hope to engineer durable resistance against P. sojae. We highlighted three USDA-NIFA funded projects which are using oomycete biology to improve resistance against soybean root and stem rot. The objective of this presentation is to highlight a role for oomycete biology in the development of disease resistant soybean.

Responsibility: United Soybean Board (USB) farmer-leaders develop and maintain partnerships with U.S. land grant universities and U.S. ag-focused research organizations such as the Plant Management Network to increase the transfer of checkoff-funded applied and practical production research information to U.S. soybean farmers. USB neither recommends nor discourages the implementation of any advice contained herein, and is not liable for the use or misuse of the information provided.

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