The Department of Plant Pathology, Entomology and Microbiology at Iowa State University welcomed Quirong Fan, a Michigan State University PhD Plant Pathology candidate, for the Spring Seminar Series on March 31st, where she presented her seminar “Rooting Out Trouble: A Combined Approach to Soybean Taproot Decline.”
During the seminar, Fan explored soybean taproot decline as an emerging disease of increasing concern. Although its biology, field dynamics, and genomic characterization remain poorly researched. Fan helped develop a comprehensive research framework that combined field diagnostics, controlled environment assays, and pathogen genomics. She worked to develop a highly sensitive qPCR assay that is capable of detecting Xylaria necrophora, the cause of soybean taproot decline. qPCR can detect the disease-causing agent at concentrations as low as 10 fg/µL in genomic DNA, using either plant or environmental controls.
Fan also emphasized the importance of combining multiple research approaches to understand disease development and spread better. By linking molecular detection tools with field observation, her work helps clarify how environmental conditions and pathogen presence interact to influence disease severity in soybean production systems.
Attendees noted that the seminar highlighted both the challenges and opportunities associated with studying emerging plant diseases. The integration of diagnostic tools with ecological and genomic data provides a more comoplete pictures of how soybean taproot decline develops and persists in agricultural settings.
Beyond its scientific contributions, Fan’s research underscores the important of early detection and monitoring strategies in crop protection. Improved diagnostic techniques and a deeper understanding of pathogen biology may help inform management practices and reduce yield losses. As the soybean taproot decline continues to emerge across major production regions, this work provides valuable insights to mitigate its impact on agriculture.
Source : iastate.edu