Assessment of genetic variability in population of Ditylenchus destructor (Thorne 1945) (Tylenchida: Anguinidae) from China

文献类型： 外文期刊

第一作者： Huang, Wen-Kun

作者： Huang, Wen-Kun;Peng, De-Liang;Zhang, Dong-Sheng;Jiang, Hong-Yun;Peng, Huan;Long, Hai-Bo;Ding, Zhong

作者机构：

关键词： inter-simple sequence repeat marker;Geopolitical Locations;China: Asia;Palearctic region;gene flow;genetic diversity;genetic structure;anthropogenic activity;regional difference;amphimictic mode;macro geographical level

期刊名称：RUSSIAN JOURNAL OF NEMATOLOGY （ 影响因子：0.286； 五年影响因子：0.464 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Ditylenchus destructor is distributed widely in China and causes considerable yield losses of potatoes. Genetic diversity and variation of this species was analysed using Inter-Simple Sequence Repeats (ISSR) markers. Second-stage juveniles from 16 populations were analysed with three primer pairs and 32 fragments were considered for the analysis. Diversity levels within populations were relatively high. Cluster analysis and principle coordinate analysis grouped the majority of the nematode populations into three main clusters. At the regional level, the AMOVA indicated that about 91.4% variations in the data set were from genotypic variations within populations, 5.0% variations due to regional differences, and the remaining 3.6% due to differences among populations within regions. Low levels of genetic variation among populations suggested an extensive gene flow among them. Amphimictic mode in natural populations and passive dispersal of nematodes by anthropogenic activities and natural means would probably be responsible for the results observed. It was shown that the ISSR marker was an efficient method for detecting the genetic structure of D. destructor populations at a macro geographical level..

分类号： Q18

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