应用生态学报2012，Vol.23Issue(11)：3087-3095,9.
中国北方球孢白僵菌的遗传多样性和种群遗传结构
Genetic diversity and population genetic structure of Beauveria bassiana in northern China
摘要
Abstract
A total of 622 isolates of Beauveria bassiana collected from 13 provinces in northern China were divided into 13 provincial subpopulations, and 568 of the 622 isolates belonging to 8 insect orders and Araneida, whose hosts could be indentified to order level, were divided into 9 host order subpopulations, with the genetic diversity and population genetic structure of the B. bassiana in northern China analyzed by using ISSR (inter-simple sequence repeat) technique. All the diversity indices showed that the B. bassiana in northern China had higher genetic diversity and population heterogeneity. Among the B. bassiana subpopulations, Inner Mongolia subpopulation and Lepidop-tera subpopulation showed the highest genetic diversity and population heterogeneity, while Henan subpopulation and Araneida subpopulation showed the lowest ones. The genetic differentiation index and genetic distance between Henan and Iiaoning subpopulations and between Araneida and Man-todea subpopulations were the highest, while those between Ningxia and Shaanxi subpopulations and between Coleoptera and Hymenoptera subpopulations were the lowest. The mean genetic differentiation index and mean genetic distance between the host order subpopulations were lower than those between the provincial subpopulations. These results and the subpopulation clustering analysis based on the genetic distance of subpopulations all demonstrated that the genetic lineage of B. bassiana isolates in northern China was associated with neither their geographic origin nor their host origin. The variation of B. bassiana in northern China was mainly caused by the variation between families and between genera of different host orders, and also, caused by the diversity between different collection sites and between different microhabitats within the collection sites.关键词
球孢白僵菌/ISSR/遗传多样性/种群遗传结构Key words
Beauveria bassiana/ ISSR/ genetic diversity/ population genetic structure分类
生物科学引用本文复制引用
何玲敏,胡晓磊,陈雪,张胜利,栾丰刚,李增智..中国北方球孢白僵菌的遗传多样性和种群遗传结构[J].应用生态学报,2012,23(11):3087-3095,9.基金项目
国家自然科学基金项目(30972368)资助. （30972368）
