Isoenzyme polymorphism and segregation in isolates of Phytophthora infestans from Japan

A Mosa, K Kobayashi, A Ogoshi, M Kato, N Sato 


Isoenzyme variation of 198 isolates of Phytophthora infestans collected from many locations in Japan during 1987–90, and of four pre-1987 isolates, was examined using starch gel electrophoresis. A previously unreported allele at malic isoenzyme locus/ME (90) was observed. An association between mating types and isoenzyme genotypes at three isoenzyme loci, glucosephosphate isomerase (GPI-1), peptidase (PEP-1) and ME, was found. At PEP-1, the A2 isolates from Japan had a previously unreported genotype (96/96). Normal segregation at the malic isoenzyme locus occurred in a cross of Japanese and Mexican parents. The results provide evidence of a change in the population genetic structure of P. infestans in Japan.

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Keywords Isoenzyme polymorphism ; Phytophthora infestans; Japan
Issue Date Jan-1993
Publisher Blackwell Publishing Ltd
Source Cited by (CrossRef): 24 articles Check for updates Citation tools
Project phD 
Journal Plant Pathology 42 (1), 26-34 
DOI 10.1111/j.1365-3059.1993.tb01468.x

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