The sudden death syndrome research alliance;
Ahmad Fakhoury ( Southern Illinois University), Brian Diers ( University of Illinois), Dean Malvick ( University of Minnesota), Dechun Wang ( Michigan State University), George Bird ( Michigan State University), Glen Hartman ( USDA/ARS-University of Illinois), James Orf ( University of Minnesota), Jason Bond ( Southern Illinois University), Leonor Leandro ( Iowa State University), Linda Kull ( University of Illinois), Madan Bhattacharyya ( Iowa State University), Silvia Cianzio ( Iowa State University), Terry Niblack ( University of Illinois), William Beavis ( Iowa State University) ($251430). The Project Manager's email is firstname.lastname@example.org.
Key Words: Fusarium virguliforme, Sudden Death Syndrome - SCN Interaction, Sudden Death Syndrome - Phytotoxins, Sudden Death Syndrome (SDS)
Sudden death syndrome (SDS) was first observed in Arkansas in 1971 and is now widespread across most major soybean producing areas in the United States. While the incidence and severity of the disease varies by year and state, the annual soybean yield losses rank SDS as a major soybean disease in soybean production areas. The primary goal of this program is to increase soybean producer profitability by reducing yield losses caused by SDS. This proposal will focus on four main research areas: 1) Breeding and genetics; 2) Interactions between soybean cyst nematode (SCN) and SDS; 3) Improvements in greenhouse and field screening protocols; and 4) Production of transgenic soybean plants with the ability to suppress the SDS pathogen toxin movement from roots to leaves. The project’s specific objectives are to: • Conduct field tests to verify the SDS resistance of experimental lines and the effect of SDS resistance QTLs; • Evaluate a new method for testing SDS resistance in soybean by monitoring chlorosis and necrosis in seedlings following infiltration with the E. coli expressed toxin; • Map SDS resistance QTL to small genetic intervals and develop genetic markers that can be efficiently used in marker-assisted selection; • Identify biotic and abiotic factors that affect the development of sudden death syndrome (SDS) and characterize the infection process of F. virguliforme alone and in the presence of other rhizosphere organisms; • Establish a coordinated field-testing protocol with germplasm lines serving as checks in Roundup Ready® and conventional trials to improve the efficiency in field trials; and • Contribute to regional outreach coordination to optimize SDS management and protect soybean yield.
This project is funded by North Central Soybean Research Programs