Pathogenic diversity of Phytophthora sojae and breeding strategies to develop Phytophthora-resistant soybeans

Takuma Sugimoto, Masayasu Kato, Shinya Yoshida, Isao Matsumoto, Tamotsu Kobayashi, Akito Kaga, Makita Hajika, Ryo Yamamoto, Kazuhiko Watanabe, Masataka Aino, Toru Matoh, David R. Walker, Alan R. Biggs, Masao Ishimoto

Research output: Contribution to journalArticlepeer-review


Phytophthora stem and root rot, caused by Phytophthora sojae, is one of the most destructive diseases of soybean [Glycine max (L.) Merr.], and the incidence of this disease has been increasing in several soybeanproducing areas around the world. This presents serious limitations for soybean production, with yield losses from 4 to 100%. The most effective method to reduce damage would be to grow Phytophthora-resistant soybean cultivars, and two types of host resistance have been described. Race-specific resistance conditioned by single dominant Rps ("resistance to Phytophthora sojae") genes and quantitatively inherited partial resistance conferred by multiple genes could both provide protection from the pathogen. Molecular markers linked to Rps genes or quantitative trait loci (QTLs) underlying partial resistance have been identified on several molecular linkage groups corresponding to chromosomes. These markers can be used to screen for Phytophthoraresistant plants rapidly and efficiently, and to combine multiple resistance genes in the same background. This paper reviews what is currently known about pathogenic races of P. sojae in the USA and Japan, selection of sources of Rps genes or minor genes providing partial resistance, and the current state and future scope of breeding Phytophthora-resistant soybean cultivars.

Original languageEnglish (US)
Pages (from-to)511-522
Number of pages12
JournalBreeding Science
Issue number5
StatePublished - 2011


  • Partial resistance
  • Phytophthora sojae
  • Phytophthora stem and root rot
  • Race-specific resistance
  • Rps gene
  • Soybean

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Genetics
  • Plant Science


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