Potato cultivation system affects population structure of Phytophthora infestans

被引：26

作者：

Brylinska, M. ^{[1
]}

Sobkowiak, S. ^{[1
]}

Stefanczyk, E. ^{[1
]}

Sliwka, J. ^{[1
]}

机构：

[1] Mlochow Res Ctr, Plant Breeding & Acclimatizat Inst, Natl Res Inst, Platanowa 19, PL-05831 Mlochow, Poland

来源：

FUNGAL ECOLOGY | 2016年 / 20卷

关键词：

SSR; Population genetic structure; Late blight; Potato; LATE BLIGHT RESISTANCE; MATING-TYPE; MICROSATELLITE MARKERS; PHENOTYPIC DIVERSITY; SEXUAL REPRODUCTION; GENOTYPIC DIVERSITY; SEVERE OUTBREAKS; SARPO MIRA; LOCUS; PLANT;

D O I：

10.1016/j.funeco.2016.01.001

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Phytophthora infestans is one of the most destructive potato pathogens. Many factors influence the population structure of P. infestans, including migration, climate and type of potato cultivation. Here, we analyse 365 P. infestans isolates collected from three regions of Poland over three years. We determined mating type, mitochondrial haplotype, resistance to metalaxyl, virulence and polymorphism at 14 simple sequence repeat (SSR) loci. Analysis of SSR markers showed high genetic diversity associated with this population. Model-based structure analysis grouped 299 unique genotypes into four main clusters. The P. infestans isolates collected from the Mlochow region, which has the most intensive level of potato cultivation, formed a distinct cluster, indicating a strong effect of the cultivation system on pathogen population structure. Three clusters contained isolates with frequent presence of three alleles at one locus, which may affect their capacity for sexual reproduction and preserve groups of fit genotypes that propagate asexually. (C) 2016 Elsevier Ltd and The British Mycological Society. All rights reserved.

引用

页码：132 / 143

页数：12

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