Su Junhu, Ji Weihong, Wang Jing, Gleeson Dianne M, Zhou Janwei, Hua Limin, Wei Yanming
College of Grassland Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem (Gansu Agricultural University), Ministry of Education , Lanzhou , P.R. China .
Mitochondrial DNA. 2014 Apr;25(2):135-41. doi: 10.3109/19401736.2013.784747. Epub 2013 Apr 22.
In this study, we use three mitochondrial markers, cytochrome b gene (Cyt b), NADH dehydrogenase subunit 4 (ND4) and control region (D-loop) to investigate the phylogenetic relationships of extant zokor species in Mysopalacinae. The phylogenetic tree constructed based on Cyt b strongly supports the monophyly genera Eospalax and Myospalax with E. fontanierii being the most ancient species in Eospalax. Further phylogenetic analyses of four species of Eospalax based on ND4 and D-loop sequences revealed two clades that correspond to two geographical distributions. The basal clade includes E. cansus which is mainly found on Loess Plateau (LP) and another clade including E. baileyi, E. smithii and E. rufescens that inhabits areas above 2000 m on Qinghai-Tibetan Plateau (QTP) and Qinling Mountains. Geographical events of QTP and LP may have played a major role in the diversification and evolution of Mysopalacinae.
在本研究中，我们使用了三个线粒体标记，即细胞色素b基因（Cyt b）、烟酰胺腺嘌呤二核苷酸脱氢酶亚基4（ND4）和控制区（D-loop），来研究鼢鼠亚科现存鼢鼠种类的系统发育关系。基于细胞色素b构建的系统发育树有力地支持了中华鼢鼠属和鼢鼠属的单系性，其中甘肃鼢鼠是中华鼢鼠属中最古老的物种。基于ND4和D-loop序列对四种中华鼢鼠进行的进一步系统发育分析揭示了两个分支，它们对应于两种地理分布。基部类群包括主要分布在黄土高原（LP）的甘肃鼢鼠，另一个类群包括栖息在青藏高原（QTP）和秦岭海拔2000米以上地区的秦岭鼢鼠、斯氏鼢鼠和罗氏鼢鼠。青藏高原和黄土高原的地理事件可能在鼢鼠亚科的多样化和进化中发挥了主要作用。
