Analysis of the lineage of Phytophthora infestans isolates using mating type assay, traditional markers, and next generation sequencing technologies

Autoři: Ramadan A. Arafa aff001;  Said M. Kamel aff001;  Mohamed T. Rakha aff003;  Nour Elden K. Soliman aff004;  Olfat M. Moussa aff004;  Kenta Shirasawa aff002
Působiště autorů: Plant Pathology Research Institute, Agricultural Research Center, Giza, Egypt aff001;  Department of Frontier Research and Development, Kazusa DNA Research Institute, Chiba, Japan aff002;  Department of Horticulture, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh, Egypt aff003;  Department of Plant Pathology, Faculty of Agriculture, Cairo University, Giza, Egypt aff004
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article


Phytophthora infestans (Mont.) de Bary, a hemibiotrophic oomycete, has caused severe epidemics of late blight in tomato and potato crops around the world since the Irish Potato Famine in the 1840s. Breeding of late blight resistant cultivars is one of the most effective strategies to overcome this disruptive disease. However, P. infestans is able to break down host resistance and acquire resistance to various fungicides, possibly because of the existence of high genetic variability among P. infestans isolates via sexual and asexual reproduction. Therefore, to manage this disease, it is important to understand the genetic divergence of P. infestans isolates. In this study, we analyzed the genomes of P. infestans isolates collected from Egypt and Japan using various molecular approaches including the mating type assay and genotyping simple sequence repeats, mitochondria DNA, and effector genes. We also analyzed genome-wide single nucleotide polymorphisms using double-digest restriction-site associated DNA sequencing and whole genome resequencing (WGRS). The isolates were classified adequately using high-resolution genome-wide approaches. Moreover, these analyses revealed new clusters of P. infestans isolates in the Egyptian population. Monitoring the genetic divergence of P. infestans isolates as well as breeding of resistant cultivars would facilitate the elimination of the late blight disease.

Klíčová slova:

Data processing – DNA sequencing – Egypt – Genotyping – Microsatellite loci – Mitochondrial DNA – Potato – Tomatoes


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