Abstract
Isolates of spinach downy mildew fungus, Peronospora farinosa f. sp. spinaciae, collected at seven sites in Japan from December 2013 to March 2016, were identified as belonging to races 8, 10, 12 and 13, and one was unauthorized. Races 10, 12, 13 and the unauthorized were first found in Japan.
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References
International Seed Federation (2015) Differential sets, Peronopsora farinosa f. sp. Spinaciae. http://www.worldseed.org/wp-content/uploads/2015/12/Spinach-downy-mildew_August2015.pdf. Accessed 5 Sept 2016
Plantum (2016) Denomination of Pfs: 16, a new race of downy mildew in spinach. http://www.plantum.nl/321519635/Document?documentregistrationid=780926983. Accessed 5 Sept 2016
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Acknowledgements
We thank the USDA Agricultural Research Service and Dr. Diederik Smilde in Naktuinbouw, for supplying the spinach cultivar seeds used for race identification. We are also grateful to Dr. Hiroshi Shiomi at Takii & Co. Ltd. and Mamoru Satou at National Agriculture and Food Research Organization, for advice.
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Kubota, M., Tamura, O., Nomura, Y. et al. Recent races of spinach downy mildew pathogen Peronospora farinosa f. sp. spinaciae in Japan. J Gen Plant Pathol 83, 117–120 (2017). https://doi.org/10.1007/s10327-017-0698-7
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DOI: https://doi.org/10.1007/s10327-017-0698-7