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ARS Home » Southeast Area » Stoneville, Mississippi » Crop Genetics Research » Research » Publications at this Location » Publication #407454
Research Project: Evaluation and Development of Improved Soybean Germplasm, Curation of USDA Accessions and Regional Evaluations of New Genotypes

Location: Crop Genetics Research

Title: Evaluating the response of Glycine soja accessions to fungal pathogen Macrophomina phaseolina during seedling growth

Author
item JACQUET, SHIRLEY - Fayetteville State University
item Li, Shuxian
item Mian, Rouf
item KASSEM, MY ADBELMAJID - Fayetteville State University
item RASHAD, LAYLA - Fayetteville State University
item VERIA, SONIA - Fayetteville State University
item RETA, FRANCISCO - Fayetteville State University
item RETA, JUAN - Fayetteville State University
item OKUNBOR, DANIEL - Fayetteville State University
item YUAN, JIAZHENG - Fayetteville State University

Submitted to: Plants
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/5/2023
Publication Date: 11/9/2023
Citation: Jacquet, S., Li, S., Mian, R.M., Kassem, M., Rashad, L., Veria, S., Reta, F., Reta, J., Okunbor, D., Yuan, J. 2023. Evaluating the response of Glycine soja accessions to fungal pathogen Macrophomina phaseolina during seedling growth. Plants. 12:3807. https://doi.org/10.3390/plants12223807.
DOI: https://doi.org/10.3390/plants12223807

Interpretive Summary: Charcoal rot of soybean is an important disease which can severely reduce yield. Research of the wild soybean aids in development of resistant soybean genotypes to mitigate the pathogen dilemma. The objective of this study is to assay wild soybean accessions in response to charcoal rot disease at the seeding stage, and thereby select the disease resistant lines. The results showed significant decrease in root and hypocotyl growth after inoculation with the pathogen in most of the G. soja accessions. The accession PI 507794 displayed the highest level of resistant response to the disease based on the growth against the pathogen among tested wild soybean accessions. This seedling assay provides an alternative way to rapidly identify potential resistant lines and facilitate breeding for resistance to charcoal rot.

Technical Abstract: Charcoal rot of soybean [Glycine max (L.) Merr.] caused by a fungal pathogen Macrophomina phaseolina (Tassi) Goid is an important disease which can severely reduce yield. Research of the wild soybean (Glycine soja) enhances the understanding of the course of the domestication history of the soybean and aids in development of resistant soybean genotypes to mitigate the pathogen dilemma. The objectives of this study are to assay wild soybean accessions in response to M. phaseolina at the seeding stage, and thereby select the disease resistant lines. The results showed significant decrease in root and hypocotyl growth after inoculation with the pathogen in most of the G. soja accessions. The accession PI 507794 displayed the highest level of resistant response to M. phaseolina in terms of root and hypocotyl growth among tested wild soybean accessions, while PI 487431 was susceptible to charcoal rot in the same test. Analysis of the response of wild soybean accessions to M. phaseolina by using hypocotyl and root as the assessment parameters at the early seedling stage provides an alternative way to rapidly identify potential resistant genotypes and facilitate breeding for resistance to charcoal rot.