沼泽型水牛微卫星DNA的遗传多样性分析

Genetic Diversity Analysis of Microsatellite DNA Markers in Swamp Buffalo

为探究中国沼泽型水牛品种或类群的遗传多样性,本研究采用了沼泽型水牛30个微卫星标记结合LabChip芯片检测法对德昌水牛、德宏水牛、温州水牛、贵州水牛、西林水牛、富钟水牛及两个引进品种摩拉水牛、尼里-拉菲水牛等40个样本进行了检测和遗传多样性分析。结果表明,在30个微卫星DNA标记上共发现332个等位基因,平均基因多样性和PIC值分别为0.7808和0.7554。聚类分析结果显示,德宏水牛和德昌水牛先聚为一类,随后与富钟水牛、贵州水牛、温州水牛、西林水牛聚为一类;摩拉水牛与尼里-拉菲水牛聚为一类。本研究证实了所选的30个沼泽型水牛微卫星DNA标记可作为有效的遗传标记用于水牛品种间的遗传多样性分析,同时也丰富了当前的水牛微卫星标记资源。

This study was aimed to investigate the genetic diversity of swamp buffalo breeds in China.The analysis of genetic diversity was performed in 40 buffalo individuals from 8buffalo breeds（Dechang buffalo,Dehong buffalo,Wenzhou buffalo,Guizhou buffalo,Xilin buffalo,Fuzhong buffalo,Murrah buffalo and Nili-Ravi buffalo）by 30 microsatellite loci and LabChip chip test method.The results showed that 332 alleles at 30 microsatellite loci were found in 8buffalo breeds,the average values of gene diversity and PIC were 0.7808 and 0.7554,respectively.Cluster analysis indicated that Dechang buffalo and Dehong buffalo firstly clustered together,followed by Fuzhong buffalo,Guizhou buffalo,Wenzhou buffalo and Xilin buffalo.Moreover,Murrah buffalo and Nili-Ravi buffalo clustered together.Our findings revealed that the 30 microsatellite loci could be used as an effective genetic marker for the analysis of genetic diversity among the buffalo breeds,which enriched the current SSR marker resources in buffalo.