Phylogenetic relationships of Cheju horses to other horse breeds as determined by mtDNA D-loop sequence polymorphism
Phylogenetic relationships of Cheju horses to other horse breeds as determined by mtDNA D-loop sequence polymorphism
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DOI：
10.1046/j.1365-2052.1999.00419.x
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发表时间：
1999-04-01
期刊：
影响因子：
2.4
通讯作者：
Lewin, HA
中科院分区：
文献类型：
--
作者：
Kim, KI;Yang, YH;Lewin, HA
历史记录表明，居住在韩国济州岛的马是1276年引入的蒙古马的后代。然而，其他研究表明，马可能在蒙古引入之前就已经存在于岛上。为了确定济州马的起源，我们使用了线粒体DNA（mtDNA）D环区序列的系统发育分析，包括tRNA（Pro）和部分tRNA（thr）和tRNA（Phe）序列（1102 bp，不包括串联重复区）。最大简约和邻居加入树构建使用序列确定7济州，4蒙古，一个普氏野马和两个中国云南马，和公布的序列为一个瑞典和三个纯种马。驴mtDNA用作外群。我们发现，蒙古，济州和纯种马品种内的mtDNA D-环序列变化很大，济州马与蒙古马以及与其他远亲品种的马聚类。根据这些研究结果，我们提出，济州岛的马是混合起源的母系，马可能已经存在，并在岛上交易之前，蒙古介绍。
Historical records suggest that horses inhabiting the island of Cheju in Korea are descendants of Mongolian horses introduced in 1276. Other studies, however, suggest that horses may have been present on the island prior to the Mongolian introduction. To determine the origin of the Cheju horses we used a phylogenetic analysis of sequences of the mitochondrial DNA (mtDNA) D-loop region, including tRNA(Pro) and parts of tRNA(thr) and tRNA(Phe) sequences (1102-bp excluding the tandem repeat region). Maximum parsimony and neighbor-joining trees were constructed using sequences determined for seven Cheju, four Mongolian, one Przewalskii and two Chinese Yunnan horses, and published sequences for one Swedish and three Thoroughbred horses. Donkey mtDNA was used as an outgroup. We found that the mtDNA D-loop sequence varies considerably within Mongolian, Cheju and Thoroughbred horse breeds, and that Cheju horses clustered with Mongolian horses as well as with horses from other distantly related breeds. On the basis of these findings we propose that horses on Cheju Island are of mixed origin in their maternal lineage, and that horses may have existed and been traded on the island before the Mongolian introduction.