A global-temporal analysis on Phytophthora sojae resistance-gene efficacy.

Rashelle L Matthiesen, Martin I Chilvers, Owen Wally, Vanessa Tremblay, Darcy E P Telenko, Adam H Sparks, Damon L Smith, Clarice L Schmidt, Mitchell G Roth, Alison E Robertson, Zachary A Noel, Santiago X Mideros, Austin G McCoy, Dean K Malvick, Yong Min Kim, Maria A Henriquez, Eduardo Guillin, Pablo E Grijalba, Loren J Giesler, Vinicius C Garnica, Daniel G Cerritos-Garcia, Carl A Bradley, Richard R Belanger

Journal: Nature communications 2023;14(1):6043

PMID: 37758723

Free Full Text on Nature Publishing Group View on PubMed

Abstract

Plant disease resistance genes are widely used in agriculture to reduce disease outbreaks and epidemics and ensure global food security. In soybean, Rps (Resistance to Phytophthora sojae) genes are used to manage Phytophthora sojae, a major oomycete pathogen that causes Phytophthora stem and root rot (PRR) worldwide. This study aims to identify temporal changes in P. sojae pathotype complexity, diversity, and Rps gene efficacy. Pathotype data was collected from 5121 isolates of P. sojae, derived from 29 surveys conducted between 1990 and 2019 across the United States, Argentina, Canada, and China. This systematic review shows a loss of efficacy of specific Rps genes utilized for disease management and a significant increase in the pathotype diversity of isolates over time. This study finds that the most widely deployed Rps genes used to manage PRR globally, Rps1a, Rps1c and Rps1k, are no longer effective for PRR management in the United States, Argentina, and Canada. This systematic review emphasizes the need to widely introduce new sources of resistance to P. sojae, such as Rps3a, Rps6, or Rps11, into commercial cultivars to effectively manage PRR going forward.

Address: Michigan State University, East Lansing, MI, USA. [email protected].; Université Laval, Québec, Canada.; University of Kentucky, Princeton, KY, USA.; University of Connecticut, Storrs Mansfield, CT, USA.; North Carolina State University, Raleigh, NC, USA.; University of Nebraska-Lincoln, Lincoln, NE, USA.; Universidad de Buenos Aires, Buenos Aires, Argentina.; Instituto Nacional de Tecnologia Agropecuaria, Buenos Aires, Argentina.; Agriculture and Agri-Food Canada, Morden, Manitoba, Canada.; Agriculture and Agri-Food Canada, Brandon, Manitoba, Canada.; University of Minnesota, St Paul, MN, USA.; Iowa State University, Ames, IA, USA.; University of Illinois at Urbana-Champaign, Urbana, IL, USA.; Auburn University, Auburn, AL, USA.; The Ohio State University-Wooster, Wooster, OH, USA.; University of Wisconsin-Madison, Madison, WI, USA.; Department of Primary Industries and Regional Development, Perth, WA, Australia.; University of Southern Queensland, Toowoomba, Qld, Australia.; Purdue University, West Lafayette, IN, USA.; Agriculture and Agri-Food Canada, Harrow, ON, Canada.; Michigan State University, East Lansing, MI, USA. [email protected].

DOI: 10.1038/s41467-023-41321-7

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MeSH Terms: Phytophthora, Genes, Plant, Agriculture, Argentina, Canada