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首页> 外文期刊>African Journal of Biotechnology >Phylogenetic relationships of Chaetomium isolates based on the internal transcribed spacer region of the rRNA gene cluster
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Phylogenetic relationships of Chaetomium isolates based on the internal transcribed spacer region of the rRNA gene cluster

机译：基于rRNA基因簇内部转录间隔区的拟杆菌属的系统发生关系

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摘要

Molecular characterization of 18?Chaetomium?isolates collected from India based on the internal transcribed spacer (ITS) region of the rRNA gene sequences was done. Phylogenetic analysis of full length ITS region showed that?Chaetomium globosumisolates, Cg1, Cg2, Cg6, Cg11 and Cg15,?Chaetomium?spp. isolates, C16, C17 and aChaetomium perlucidum?isolate formed a group with American isolates ofChaetomium?spp., SW287, SW271 and CL024, thereby supporting the close relationships among these isolates. Other?C. globosum?isolates, Cg3, Cg4, Cg5, Cg10, Cg12, Cg13 and Cg14 clustered with European isolates, UOA/HCPF 9215 and UOA/HCPF 9860 and an Australian isolate NC1. Isolates Cg7, Cg8, and Cg9 were closely related to the Australian isolates but distantly related to the isolates from New Zealand. However, all these isolates clustered in the same Australia group as evident in the evolutionary history analysis using parsimony method. European isolate MU-2009 and Australian isolates NA26 were separated from the rest of the isolates and did not cluster in any of the groups formed. Results indicate that, different isolates of the?Chaetomium?spp. may have different life strategies and specialized in surviving diverse climates.
机译：根据rRNA基因序列的内部转录间隔区（ITS）对从印度收集的18？Chaetomium？分离物进行了分子表征。全长ITS区的系统发育分析表明，球形拟南芥属Cg1，Cg2，Cg6，Cg11和Cg15，〜拟南芥属spp。分离株C16，C17和透明质酸杆菌分离物与美洲分离物Chaetomium？spp。，SW287，SW271和CL024组成了一个群体，从而支持了这些分离物之间的密切关系。其他？ globosum？分离株，Cg3，Cg4，Cg5，Cg10，Cg12，Cg13和Cg14与欧洲分离株UOA / HCPF 9215和UOA / HCPF 9860以及澳大利亚分离株NC1聚在一起。分离株Cg7，Cg8和Cg9与澳大利亚分离株密切相关，但与来自新西兰的分离株远缘相关。但是，所有这些分离株都聚集在同一个澳大利亚组中，这在使用简约方法进行进化史分析中很明显。欧洲分离株MU-2009和澳大利亚分离株NA26与其余分离株分离，没有聚集成任何组。结果表明，不同的分离物为“ Chaetomium” spp。可能有不同的生活策略，并且专门研究如何在各种气候中生存。

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