刘开辉; 邓百万; 陈文强; 丁小维; 彭浩; 解修超
陕西理工学院生物科学与工程学院陕西省食药用菌工程技术研究中心

【中文摘要】 对不同形态猪苓(Polyporus umbellata)菌核(猪屎苓、铁蛋猪屎苓和鸡屎苓)的rDNA(18S r DNA,ITS1-5.8S rDNA-ITS2)和β-tub1进行扩增、测序。序列分析表明:所得rDNA和β-tub1序列完全相同。以Neighbor-joining(N-J)方法构建ITS(ITS1-5.8S rDNA-ITS2)序列系统发育树,供试菌株同GenBank中收录猪苓(P.umbellata)类聚于同一分枝且序列完全相同,表明不同形态菌核的猪苓之间亲缘关系较近。

【英文摘要】 Genetic relationships between three Polyporus umbellata strains,designated Zhushiling,Tiedanzhushiling and Jishiling on the basis of differences in sclerotium morphology,were analysed using rDNA(18S rDNA,ITS1-5.8S rDNA-ITS2) and β-tub1 fragment sequences.Although the test strains exhibited dissimilar sclerotial features,no differences were detected in their rDNA and β-tub1 sequences.Using the neighbor-joining method,a phylogenetic tree was constructed on the basis of the ITS data and other ITS sequences deposited in GenBank.This revealed a relatively high genetic similarity between the test strains,another P.umbellata strain and several Grifola umbellata strains.

【中文关键词】 猪苓; 菌核; rDNA序列; β-tub1序列; 亲源关系
【英文关键词】 Polyporus umbellata; sclerotium; rDNA sequence; β-tub1 sequence; genetic relationship
【基金】陕西省教育厅项目(编号:04JS32,08JZ21,08JK244,08JK248);; 陕西理工学院人才引进项目(编号:SLGQDO712,SLGQDO713)的部分研究内容

【文献出处】 食用菌学报,Acta Edulis Fungi,编辑部邮箱,2009年03期 【DOI】CNKI:SUN:SYJB.0.2009-03-003