2020
Disease management for new and old foes of Soybean
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Contributor/Checkoff:
Ohio Soybean Council
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Anne Dorrance, The Ohio State University
Co-Principal Investigators:
Project Code:
20-R-02
Contributing Organization (Checkoff):
Ohio Soybean Council
$100,000
Institution Funded:
The Ohio State University
$100,000
Brief Project Summary:

The first objective of this project is to survey and monitor the pathogens that affect soybean. Second, evaluate genetic changes and fungicide sensitivity in these populations. Host resistance is the most effective tool to manage these diseases. Resistance to these soil-borne pathogens was identified, as well as more than a dozen potential candidate genes that may regulate the resistance response. Third, continue to map resistance towards these pathogens as well as others and evaluate candidate genes to develop perfect markers. Fourth, improve management approaches to reduce the impact of these diseases on profitability.

Key Beneficiaries:
#agronomists, #extension agents, #farmers, #seed companies, #soybean breeders
Unique Keywords:
#diseaes, #disease management, #soybean breeding, #soybean diseases
Information And Results
Project Deliverables

First quarter (December 2019): Harvest and begin to screen lines segregating for resistance to P. sojae; Pythium and Fusarium. Continue the VIGs experiments for potential R-gene sequence and candidate genes for resistance via functional analysis. Develop new markers for novel Rps genes and QTL. Collect soil from studies of soil factors that influence SDS. Harvest plots and analyze summer data from management studies. Complete identification of pathogens from summer/fall surveys. Submit 2 to 3 manuscripts. Continue to evaluate segregating populations for resistance to key Pythium spp..

Second quarter (March 2020): Complete screening of all Ohio Breeders material; screening of populations with novel resistance developed/advanced during summer of 2019 as well as isolate DNA for marker analysis. In addition to Phytophthora sojae, screen populations for resistance to 3 types of Py. irregulare, Py sylvaticum and compare responses across isolates. Provide breeders with any new data and lines to facilitate decisions required for new soybean populations. Continue with experiments for functional analysis of candidate genes.

Third quarter (June 2020): Initiate summer field studies for disease management, begin to increase germplasm with novel resistance genes that require further analysis, evaluate yield effects for specific QTL, increase selected germplasm for studies. Monitor disease development throughout the state, collect isolates for further studies.
To download a copy of the proposal form visit www.soyohio.org

Fourth quarter (September 2020) – Collect and summarize summer field data, continue screening and fine mapping of resistance genes; characterizing the role of candidate genes, begin writing reports; present results at APS meeting and Molecular biology of the Soybean.

Final Project Results

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.