Survival and spread of Phytophthora capsici in Coastal Peru.

摘要: Phytophthora capsici is a soilborne pathogen that causes significant losses to pepper production in Peru. Our objective was investigate the mechanisms by which P. able survive and spread. During 2005 2007, 227 isolates of were collected from four species (Capsicum annum, C. baccatum, chinense, pubescens) tomato (Solanum lycopersicum) at 33 field sites 13 provinces across coastal All A2 mating type amplified fragment length polymorphism (AFLP) analysis indicates 221 had same genotype. Analyses six polymorphic single nucleotide (SNP) loci showed fixed heterozygosity suggesting clonal lineage widely dispersed. Members recovered during 2007 geographically separate locations each host types sampled. results indicate reproduction drives population structure The impact continuous cropping irrigation common river sources on Barranca Valley are discussed.