PHYTOPHTHORA INFESTANS POPULATIONS FROM THE EUROPEAN PART OF RUSSIA: GENOTYPIC STRUCTURE AND METALAXYL RESISTANCE

Populations of the potato and tomato late blight pathogen from different regions of the European part of Russia were studied for their genotypic structure and metalaxyl resistance. The majority of the studied populations showed a high genotypic diversity, i.e. strains of A1 and A2 mating types, Ia a...

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Bibliographic Details
Published in:Journal of plant pathology 2015-11, Vol.97 (3), p.449-456
Main Authors: Elansky, S.N., Pobedinskaya, M.A., Kokaeva, L.Y., Statsyuk, N.V., Dyakov, Y.T.
Format: Article
Language:English
Subjects:
Blight
Fungicides
Genotypes
Haplotypes
Mitochondrial DNA
Oospores
Phytopathology
Plants
Population structure
Tubers
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Summary:Populations of the potato and tomato late blight pathogen from different regions of the European part of Russia were studied for their genotypic structure and metalaxyl resistance. The majority of the studied populations showed a high genotypic diversity, i.e. strains of A1 and A2 mating types, Ia and IIa mitochondrial DNA haplotypes, and different genotypes at Pep1 and Pep2 loci were identified. The highest genotypic diversity was registered among P. infestans populations from the North Caucasus, Mariy El Republic, and the Moscow region. The obtained data confirm a high probability of crossing and hybridization within the most part of the field populations of P. infestans from the European part of Russia. Most of the studied populations included strains with high and low metalaxyl resistance, the incidence of resistant strains depending on the use of metalaxyl-containing fungicides.
ISSN:1125-4653
2239-7264
DOI:10.4454/JPP.V97I3.020