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...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。展开更多
To investigate the genetic diversity of Tricholoma matsutake,we studied ITS and IGS1 sequences and PCR polymorphism of a retrotransposon in 56 fruit bodies collected from 13 counties of 9 regions in Yunnan Province. W...To investigate the genetic diversity of Tricholoma matsutake,we studied ITS and IGS1 sequences and PCR polymorphism of a retrotransposon in 56 fruit bodies collected from 13 counties of 9 regions in Yunnan Province. We found one and three haplotypes based on ITS and IGS1 sequences,respectively. Moreover,there was no significant difference in PCR polymorphism of the retrotransposon among different populations. Compared with Jilin Province(China) and Japanese populations,although Yun-nan was highly homogenous to Japanese populations,low genetic diversity of T. matsutake in Yunnan did not support the view that this species originated from Yunnan.展开更多
基金Supported by the 10th Five-year Chinese National Programms for Science and Technology Development (Grant No. 2001BA707B01)National Natural Science Foundation of China (Grant No. 30621092)Natural Science Foundation of Yunnan Province (Grant No. 2005PG11)
文摘To investigate the genetic diversity of Tricholoma matsutake,we studied ITS and IGS1 sequences and PCR polymorphism of a retrotransposon in 56 fruit bodies collected from 13 counties of 9 regions in Yunnan Province. We found one and three haplotypes based on ITS and IGS1 sequences,respectively. Moreover,there was no significant difference in PCR polymorphism of the retrotransposon among different populations. Compared with Jilin Province(China) and Japanese populations,although Yun-nan was highly homogenous to Japanese populations,low genetic diversity of T. matsutake in Yunnan did not support the view that this species originated from Yunnan.
