基于ITS-nrDNA的疫霉属系统进化分析  

Phylogeny of Phytophthora Species Based on ITS-nrDNA Sequences Analysis

作　　者：金刚[1] 陈涛[1] 唐向民[2] 苏文潘[1] 黄惠芳[1] 檀小辉[1] 王春田[1] 

机构地区：[1]广西壮族自治区亚热带作物研究所,南宁530001 [2]广西农业科学院经济作物研究所,南宁530007

出　　处：《科学技术与工程》2014年第1期143-145,153,共4页Science Technology and Engineering

基　　金：现代农业产业技术体系建设专项资金(CARS-19-S15);广西直属公益性科研院所基本科研业务费专项资金项目(桂热研201206)资助

摘　　要：基于对GenBank下载的121株疫霉菌Phytophthora的核糖体DNA的ITS序列分析,以Pythium sylvaticum为外围群,按最大简约法(maximum parsimony)构建其系统发育树,以对疫霉菌的系统发育关系进行研究。结果表明,疫霉属总体上可分为5个类群;P.undulata和P.batemanensis与Pythium sylvaticum的亲缘关系近,而与疫霉属的亲缘关系远;ITS序列分析结果不支持P.cryptogea和P.drechsleri为同物异名的观点。Based on maximum parsimony phylogeny tree of ITS-nrDNA sequences of 121 isolates down- loaded from GenBank, a phylogenetic tree was constructed by the MEGA4.0 package by maximum parsi- mony method. Their phylogenetic relationships were studied. The present results showed that Phytoph- thora species were clustered into five groups. The analysis of ITS-nrDNA sequences didn＇t support the i- dea that P. cryptogea and P. drechsleri are synonymous. The MP （Maximum parsimony） tree also showed that P. undulata and P. batemanensis was more homogenous with Fythium. The other Phytophthora spe- cies are also discussed.

关 键 词：疫霉属 转录间隔区 系统进化 

分 类 号：S41-30[农业科学—植物保护]