Genetic diversity of Hirsutella sinensis revealed by EST-SSR

YUAN Feng; YU Hong; ZUO Shimei

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Genetic diversity of Hirsutella sinensis revealed by EST-SSR

YUAN Feng #,YU Hong *,ZUO Shimei

Yunnan Herbal Laboratory, Institute of Herb Biotic Resources, Yunnan University, 650091

*Correspondence author

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Funding: Specialized Research Fund for the Doctoral Program of Higher Education Foundation （No.No.20125301110001) and Applied Science Foundation of Yunnan Province Foundation）

Opened online:26 November 2014

Accepted by: none

Citation: YUAN Feng,YU Hong,ZUO Shimei.Genetic diversity of Hirsutella sinensis revealed by EST-SSR[OL]. [26 November 2014] http://en.paper.edu.cn/en_releasepaper/content/4619402

In recent years, expressed sequence tags has been used as a new approach to develop markers, as they rapidly accumulated in databases. In the present study, EST-SSR markers of the genus Hirsutella have been identified using primers designed from ESTs pools of Paecilomyces militaris and were found to have well transferability from Paecilomyces to Hirsutella. These markers were used to evaluate genetic diversity and structure within and between 8 populations of Hirsutella sinensis. The genetic differentiation of H. sinensis was relatively astonishing between populations (67.49%). The Nm was 0.2408, indicating serious lack of gene flow among populations of H. sinensis. The genetic distance and geographical distance were significantly positively correlated relationship (P = 0.04). And the analysis of mismatch distribution indicated the populations of H. sinensis underwent population expansion recently. It was also found that H. robertsii might originate from H. sinensis. The EST-SSR markers were proved to be an informative and useful tool for assaying genetic diversity and authenticating species of Hirsutella.

Keywords:Genetic diversity; Hirsutella sinensis; Expressed sequence tag (EST), Simple sequence repeat (SSR)

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