期刊
PLANT PATHOLOGY
卷 60, 期 5, 页码 938-945出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-3059.2011.02446.x
关键词
CERVUS; late blight; oospores; parentage analysis; population genetics; soilborne inoculum
资金
- Swedish Board of Agriculture
- Swedish Farmer's Foundation for Agricultural Research
The dynamics of a late blight epidemic and sexual reproduction in Phytophthora infestans were studied in an experimental field in mid-Sweden. The field was inoculated with six isolates of P. infestans taken from another potato field where sexual reproduction of the pathogen was suspected. Three weeks after inoculation single-lesion leaflets were sampled and the resulting isolates characterized using microsatellites (SSRs) and mating type as markers. Among the 151 isolates analysed, the inoculum genotypes constituted more than 80% of the genotypes found, with three other genotypes making up the remainder. The following year, P. infestans obtained from soil samples taken from this field were analysed, and six novel genotypes were identified. Genotypes from the previous summer's population were not detected. Analysis of the genotypes recovered was consistent with them being recombinants, with the previous summer's population acting as parents. These findings are consistent with the hypothesis that oospores produced during a summer epidemic in Sweden can overwinter and cause infection the next year.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据