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Journal of General Plant Pathology

, Volume 84, Issue 4, pp 276–278 | Cite as

Races of Phytophthora infestans isolated from potato in Hokkaido, Japan

  • Yuka Fukue
  • Seishi Akino
  • Hisashi Osawa
  • Norio Kondo
Fungal Diseases
  • 165 Downloads

Abstract

The virulence of 29 isolates of Phytophthora infestans collected in potato fields in Hokkaido, Japan, in 2013 and 2014, was tested for race identification. Thirteen different races were identified, each of which had five to eight virulence factors. All of the isolates caused a virulent reaction against plants with R1 and R7, and most of the isolates caused a virulent reaction against plants with R3, R4, R10, and R11. On the other hand, no isolate was virulent against plants with R9. These results demonstrate that the current Japanese P. infestans population is more complex than the population in the 1990s from the viewpoint of race.

Keywords

Late blight Potato R genes R differentials Virulence 

Notes

Acknowledgements

The authors thank Ms. Kayo Shirai (Ornamental Plants and Vegetables Research Center, HRO), Dr. Sachiko Ikeda (Kitami Agricultural Experiment Station, HRO), Mr. Masanobu Tanaka (Shihoro Agricultural Cooperative Association), and Mr. Yoshihide Nakajima and Akimitsu Hirata (Syngenta Japan Co. Ltd.) for providing the isolates used in this study. We also thank Dr. Kazuyoshi Hosaka (Obihiro University of Agriculture and Veterinary Medicine) for commenting on and improving an early draft of this manuscript.

Compliance with ethical standards

Conflicts of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

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Copyright information

© The Phytopathological Society of Japan and Springer Japan KK, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Laboratory of Plant Pathology, Graduate School of AgricultureHokkaido UniversitySapporoJapan
  2. 2.Ministry of Agriculture, Forestry and FisheriesTokyoJapan

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