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Plant Pathology and Microbiology

Plant Pathology and Microbiology / Ecology and Organismal Biology / Research Highlights / Can we make Sudden Death Syndrome of Soybeans more Predictable? - Leandro Lab

Can we make Sudden Death Syndrome of Soybeans more Predictable? - Leandro Lab

Sudden Death Syndrome (SDS) is an important soybean disease that causes root rot, defoliation, and yield loss. This disease is caused by the soilborne fungus Fusarium viguliforme that infects the roots and produces a toxin responsible for the foliar symptoms. SDS is extremely variable and hard to predict in field conditions, so disease management is a major challenge for growers. The goal of my research is to better understand the factors that cause variability in SDS symptom expression in order to improve disease management. My research addresses questions about the possible sources of variability at different stages of the disease cycle, including: what pathogen levels are needed in soil for disease development; what is the importance of timing of root infection on disease severity; what kind of interaction is there between SDS and other root rot pathogens, particularly the soybean cyst nematode; how do post-infection environmental factors affect symptom expression; and what level of genetic variability is present in pathogen populations and how does it affect aggressiveness on soybeans?

 

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Department Highlights

Dr. Greg Tylka

Professor

"What excites you about your job? The opportunity to conduct research experiments to address the real-world problems of Iowa soybean growers and then being able to also educate growers and agribusiness professionals about the results of the research and how to better manage crop diseases.
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