Abstract
The race of field isolates of Peronospora farinosa f. sp. spinaciae (Pfs), causal agent of spinach downy mildew, were identified using race-differential cultivars. One isolate was similar to race Pfs:6. Three isolates were identified as race Pfs:8, the first time the race has been reported in Japan as far as we know. The differential reaction caused by the other two isolates did not match any known to be caused by races Pfs:1 through Pfs:11; thus, this strain appears to a new pathogenic strain in Japan.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Anonymous (2010) International Seed Federation. Differential sets: Peronospora farinosa f. sp. spinaciae (Pfs)–spinach. http://www.worldseed.org/cms/medias/file/TradeIssues/DiseasesResistance/Differentials/Spinach-downy_mildew.pdf. Accessed 5 Nov 2010
Correll JC, Koike ST, Smilde S (2009) Naming of spinach downy mildew races, a case study (Abstract). Phytopathology 99:S156
Correll JC, du Toit L, Koike ST, van Ettekoven K (2010) Guidelines for spinach downy mildew: Peronospora farinosa f. sp. spinaciae (Pfs). http://www.worldseed.org/cms/medias/file/TradeIssues/DiseasesResistance/StrainIdentification/Spinach_downy_mildew_Differentials_29102010.pdf. Accessed 5 Nov 2010
Correll JC, Bluhm BH, Feng C, Lamour K, du Toit LJ, Koike ST (2011) Spinach: better management of downy mildew and white rust through genomics. Eur J Plant Pathol 129:193–205
Irish BM, Correll JC, Koike ST, Morelock TE (2007) Three new races of the spinach downy mildew pathogen identified by a modified set of spinach differentials. Plant Dis 91:1392–1396
Satou M, Sugiura T, Ohsaki R, Honda N, Horiuchi S, Yamauchi N (2002) A new race of spinach downy mildew in Japan. J Gen Plant Pathol 68:49–51
Satou M, Nishi K, Kubota M, Fukami M, Tsuji H, van Ettekoven K (2006) Appearance of race Pfs:5 of spinach downy mildew fungus, Peronospora farinosa f. sp. spinaciae, in Japan. J Gen Plant Pathol 72:193–194
Shimazaki Y (1988) Epidemiology and control of spinach downy mildew (in Japanese). Plant Prot 42:347–350
Shimazaki Y (1990) Appearance of a new race 4 of downy mildew of spinach (Abstract in Japanese). Ann Phytopathol Soc Jpn 56:95
Acknowledgments
We thank H. Shiomi (Takii Co., Japan) for help with this study and D. Smilde and K. van Ettekoven (Naktuinbouw, Netherlands) for seeds of the race-differential cultivars.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yamauchi, N., Horinouchi, H., Sakai, K. et al. First report of spinach downy mildew caused by race Pfs:8 of Peronospora farinosa f. sp. spinaciae in Japan. J Gen Plant Pathol 77, 260–262 (2011). https://doi.org/10.1007/s10327-011-0313-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10327-011-0313-2