Mitochondrial DNA variation and evolution of Japanese black cattle (Bos taurus).
Mitochondrial DNA variation and evolution of Japanese black cattle (Bos taurus).
复制标题
日本黑牛（Bos taurus）的线粒体DNA变异和进化。
作者：
H. Mannen;S. Tsuji;R. Loftus;D. Bradley
本文描述了32头日本黑牛的完整线粒体DNA置换环序列，并结合以前发表的来自非洲、欧洲和印度受试者的序列进行了分析。东北亚驯养牛的起源尚不清楚。该地区最早的家牛是牛，可能是从当地的野牛(Aurochsen；B.Primienius)驯化而来的，或者可能起源于来自近东早期国内中心的移民。在系统发育分析中，牛磺酸序列形成一棵密集的树，其中心由混合的欧洲和日本序列以及一组日本序列和另一组所有非洲序列组成，每个序列在系统发育的两端形成不同的簇。这种拓扑结构和校准的序列分歧水平表明，这些簇可能代表了三种不同的祖先自闭症品系，在驯化过程的地理和时间上分开的阶段采用。与非洲不同，日本一半的牛序列在拓扑上与欧洲的变种混合在一起。这表明了一种可能是古老的变异的互换，可能是第一次将驯化动物引入东亚的遗产。
This article describes complete mitochondrial DNA displacement loop sequences from 32 Japanese Black cattle and the analysis of these data in conjunction with previously published sequences from African, European, and Indian subjects. The origins of North East Asian domesticated cattle are unclear. The earliest domestic cattle in the region were Bos taurus and may have been domesticated from local wild cattle (aurochsen; B. primigenius), or perhaps had an origin in migrants from the early domestic center of the Near East. In phylogenetic analyses, taurine sequences form a dense tree with a center consisting of intermingled European and Japanese sequences with one group of Japanese and another of all African sequences, each forming distinct clusters at extremes of the phylogeny. This topology and calibrated levels of sequence divergence suggest that the clusters may represent three different strains of ancestral aurochs, adopted at geographically and temporally separate stages of the domestication process. Unlike Africa, half of Japanese cattle sequences are topologically intermingled with the European variants. This suggests an interchange of variants that may be ancient, perhaps a legacy of the first introduction of domesticates to East Asia.
影响因子：
3.3
作者：
M. Shriver;L. Jin;Ranajit Chakraborty;E. Boerwinkle
通讯作者：
M. Shriver;L. Jin;Ranajit Chakraborty;E. Boerwinkle