2022
Study of SCN diversity and detection of white soybean cyst nematode for strategically breeding resistant soybeans
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Contributor/Checkoff:
Minnesota Soybean Research and Promotion Council
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Senyu Chen, University of Minnesota
Co-Principal Investigators:
Aaron Lorenz, University of Minnesota
Project Code:
10-15-47-22151
Contributing Organization (Checkoff):
Minnesota Soybean Research and Promotion Council
$90,000
Institution Funded:
University of Minnesota
$90,000
Brief Project Summary:

A new cyst nematode species, Heterodera sojae, also known as white soybean cyst nematode (WSCN), was found in Korea and China, indicating that the nematode exists in other regions in the world. Researchers developed 180 SCN inbred lines randomly selected from field populations collected across Minnesota, to represent the diversity and resources for study. In addition, the inbred cyst nematode lines are a useful resource for WSCN detection. In this project, researchers will characterize the virulence phenotypes and detect WSCN within those lines on SCN-resistant soybean germplasm. In addition, the long-term study of effect of SCN-resistance sources on SCN population virulence phenotypes is included.

Key Benefactors:
farmers, scientists, breeders

Information And Results
Project Deliverables

• This project will develop knowledge of diversity SCN virulence (HG Types) in Minnesota, and the knowledge will be used to strategically deploy effective types of SCN resistance in soybean cultivars.
• This project will determine if white soybean cyst nematode, another important cyst nematode on soybean, occurs in Minnesota.
• The study will result in a better understanding of basic biology of the soybean cyst nematode.
• The information developed from this project will be used in extension education such as Agronomy Field Tour, Open House at the University of Minnesota Southern Research and Outreach Center, and MN Ag Expo.
• The research will be published in scientific journal for a broader dissemination.

Final Project Results

Updated June 3, 2024:
Summary:
The soybean cyst nematode (SCN, Heterodera glycines) is the most destructive pathogen of soybean and widely spread in Minnesota and most soybean-growing regions throughout the world. Recently, a new cyst nematode species, Heterodera sojae, also known as ‘white soybean cyst nematode’ (WSCN) as a common name, was found in Korea and China. Soybean cyst nematode has big variations in morphology and virulence phenotypes (ability of reproduction on different soybean germplasm lines). In this project, we study diversity of the SCN and detect WSCN in Minnesota. Specifically, we phenotyped 182 inbred lines of cyst nematodes randomly selected from Minnesota soybean fields for their virulence phenotypes on the SCN-resistant source germplasm lines PI 88788, Peking, PI 437654, PI 567516C, PI 438489B, and a line that has novel SCN-resistance QTL/gene. We study variations in SCN morphology and determine if WSCN occurs in Minnesota or not. The knowledge of SCN diversity and WSCN occurrence is highly useful for strategically breeding soybean cultivars resistant to the cyst nematode(s) with the most effective sources of resistance. In addition, we study effectiveness of rotation of different sources of resistance in managing SCN. This project will advance technology to manage the most destructive pests, the cyst nematodes, in soybean and maintain the crop productivity in Minnesota.

See the attached for details

View uploaded report PDF file

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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.