Genotypic characterization of Phytophthora infestans populations in Bangladesh

Phillip Wharton; Sandesh Dangi; Most M. BegumDavid DouchesKaren E. Hokanson

首页> 外文期刊>Plant Pathology >Genotypic characterization of Phytophthora infestans populations in Bangladesh

【24h】

Genotypic characterization of Phytophthora infestans populations in Bangladesh

机译：Genotypic characterization of Phytophthora infestans populations in Bangladesh

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Abstract Late blight, caused by Phytophthora infestans, is an economically important disease of potato that causes significant yield losses, with severe outbreaks regularly occurring in Bangladesh. The objective of this study was to do a large‐scale survey of potato fields in the main potato‐growing divisions of Bangladesh examining genotypic diversity of P. infestans populations. A total of 160 samples were collected in 2018 from both potato (n = 140) and tomato (n = 20). Isolates were mainly collected on FTA cards (n = 143), but 17 were also collected and isolated into pure culture. Microsatellite analysis revealed high levels of subclonal diversity in P. infestans populations with 116 multilocus genotypes recorded from 160 samples. Comparisons with standards of European and US isolates showed that 74 of samples could be categorized as genotype EU_13_A2, 7 clustered near EU_6_A1 and EU_1_A1, and 19 were unique. Discriminant analysis of principal components showed that the P. infestans population clustered into four distinct groups: a main group that contained most of the samples from potato, two distinct tomato groups and one group of samples originating from the division of Mymensingh. Of 17 isolates from cultures, 16 were EU_13_A2 and one was EU_6_A1; 15 were insensitive to metalaxyl‐M. Out of 160 samples, 158 were categorized as mating type A2 and two as mating type A1. These results indicate that Bangladesh populations of P. infestans from potato, like those from neighbouring countries, are dominated by genotype EU_13_A2. However, populations from tomato were distinct and appear to be specific to tomato.

著录项

来源
《Plant Pathology》 |2023年第6期|1136-1148|共13页
作者
Phillip Wharton; Sandesh Dangi; Most M. BegumDavid DouchesKaren E. Hokanson;
展开▼
作者单位

Michigan State University;

University of Minnesota;

University of Idaho, Aberdeen Extension and Research CenterTuber Crops Research Center, Bangladesh Agricultural Research Institute;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类植物病理学;
关键词
FTA cards; genetic structure; late blight; microsatellite analysis; Phytophthora infestans; potato;

Genotypic characterization of Phytophthora infestans populations in Bangladesh

摘要

著录项

相关主题

期刊订阅