Multiple gene genealogical analyses of a nematophagous fungus Paecilomyces lilacinus from China
Multiple gene genealogical analyses of a nematophagous fungus Paecilomyces lilacinus from China
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DOI：
10.1007/s12275-013-2599-6
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发表时间：
2013-08
影响因子：
3
通讯作者：
Juan Li;Heng Li;Xiaoxu Bi;Ke-Qin Zhang
中科院分区：
文献类型：
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作者：
Juan Li;Heng Li;Xiaoxu Bi;Ke-Qin Zhang
淡紫拟青霉是一种地理分布广泛的食线虫真菌，也是一种很有前途的植物寄生线虫生物防治剂。然而，人们对其广泛的地理和生态背景下的遗传变异模式知之甚少。本研究分析了80株家蚕的2个毒力相关基因（PL和PLC）和4个管家基因片段（ITS、RPB 1、RPB 2和β-tubulin）的遗传变异。紫丁香标本采自中国7个地点。不同程度的多态性和单倍型多样性之间的6个基因片段观察。然而，没有观察到的地理种群之间的遗传分化，与广泛的基因流之间的这些地理种群的P。中国紫丁香属。分析还表明，克隆繁殖是白刺自然种群的主要繁殖方式。淡紫色的
Paecilomyces lilacinusis 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 (PLSandPLC) and 4 housekeeping gene fragments (ITS, RPB1, RPB2, andβ-tubulin) among 80P. lilacinusspecimens 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 ofP. lilacinusin China. Our analysis also suggested that clonal reproduction was the predominant mode of reproduction in natural populations ofP. lilacinus.