Multiple Gene Genealogical Analyses of a Nematophagous Fungus Paecilomyces lilacinus from China

Juan Li; Heng Li; Xiaoxu Bi; Ke-Qin Zhang

doi:10.1007/s12275-013-2599-6

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Multiple Gene Genealogical Analyses of a Nematophagous Fungus Paecilomyces lilacinus from China: Juan Li , Heng Li , Xiaoxu Bi , Ke-Qin Zhang; Journal of Microbiology 2013;51(4):423-429.
DOI: https://doi.org/10.1007/s12275-013-2599-6
Published online: August 30, 2013

Laboratory for Conservation and Utilization of Bio-resources, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan University, Kunming, Yunnan 650091, P. R. China

Corresponding author: Ke-Qin Zhang , Tel: +86-871-65034878,

Received: 31 October 2012 • Accepted: 13 March 2013

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Abstract

Paecilomyces lilacinus is a geographically widespread nematophagous fungus and a promising biological control agent against plant parasitic nematodes. However, relatively little is known about its patterns of genetic variation through its broad geographic and ecological contexts. In this study, we analyzed the genetic variation of 2 virulence-associated genes (PLS and PLC) and 4 housekeeping gene fragments (ITS, RPB1, RPB2, and β-tubulin) among 80 P. lilacinus specimens collected from 7 locations in China. Various degrees of polymorphism and haplotype diversity were observed among the six gene fragments. However, no genetic differentiation was observed among the geographic populations, consistent with extensive gene flow among these geographic populations of P. lilacinus in China. Our analysis also suggested that clonal reproduction was the predominant mode of reproduction in natural populations of P. lilacinus.

Keywords: genetic diversity;biological control;haplotype;clonal reproduction

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Multiple Gene Genealogical Analyses of a Nematophagous Fungus Paecilomyces lilacinus from China

J. Microbiol. 2013;51(4):423-429. Published online August 30, 2013

DOI: https://doi.org/10.1007/s12275-013-2599-6

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