Identification of Quantitative Disease Resistance Loci Toward Four Pythium Species in Soybean.

Autor:	Clevinger EM; School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, United States., Biyashev R; School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, United States., Lerch-Olson E; Department of Plant Pathology and Microbiology, Iowa State University, Ames, IA, United States., Yu H; Department of Animal Science, Iowa State University, Ames, IA, United States., Quigley C; Soybean Genomics and Improvement Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD, United States., Song Q; Soybean Genomics and Improvement Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD, United States., Dorrance AE; Center for Applied Plant Sciences and Soybean Research, Department of Plant Pathology, Ohio State Sustainability Institute, The Ohio State University, Wooster, OH, United States., Robertson AE; Department of Plant Pathology and Microbiology, Iowa State University, Ames, IA, United States., Saghai Maroof MA; School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, United States.
Jazyk:	angličtina
Zdroj:	Frontiers in plant science [Front Plant Sci] 2021 Mar 30; Vol. 12, pp. 644746. Date of Electronic Publication: 2021 Mar 30 (Print Publication: 2021).
DOI:	10.3389/fpls.2021.644746
Abstrakt:	In this study, four recombinant inbred line (RIL) soybean populations were screened for their response to infection by Pythium sylvaticum , Pythium irregulare , Pythium oopapillum , and Pythium torulosum. The parents, PI 424237A, PI 424237B, PI 408097, and PI 408029, had higher levels of resistance to these species in a preliminary screening and were crossed with "Williams," a susceptible cultivar. A modified seed rot assay was used to evaluate RIL populations for their response to specific Pythium species selected for a particular population based on preliminary screenings. Over 2500 single-nucleotide polymorphism (SNP) markers were used to construct chromosomal maps to identify regions associated with resistance to Pythium species. Several minor and large effect quantitative disease resistance loci (QDRL) were identified including one large effect QDRL on chromosome 8 in the population of PI 408097 × Williams. It was identified by two different disease reaction traits in P. sylvaticum , P. irregulare , and P. torulosum . Another large effect QDRL was identified on chromosome 6 in the population of PI 408029 × Williams, and conferred resistance to P. sylvaticum and P. irregulare . These large effect QDRL will contribute toward the development of improved soybean cultivars with higher levels of resistance to these common soil-borne pathogens. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2021 Clevinger, Biyashev, Lerch-Olson, Yu, Quigley, Song, Dorrance, Robertson and Saghai Maroof.)
Databáze:	MEDLINE
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