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

Author:

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

Abstract

AbstractPlant 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.

Funder

United Soybean Board

North Central Soybean Research Program Project GREEEN Michigan Soybean Committee

Publisher

Springer Science and Business Media LLC

Subject

General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary

Reference94 articles.

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