The Lusitano horse maternal lineage based on mitochondrial D-loop sequence variation
The Lusitano horse maternal lineage based on mitochondrial D-loop sequence variation
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DOI：
10.1111/j.1365-2052.2005.01279.x
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发表时间：
2005-06-01
期刊：
影响因子：
2.4
通讯作者：
Machado, AD
中科院分区：
文献类型：
--
作者：
Lopes, MS;Mendonça, D;Machado, AD
线粒体D环序列（408 bp）的分析，从145卢西塔诺创始人共产生了27个不同的单倍型。这些线粒体DNA序列的分布是相当不均衡的，其中三个最常见的代表所有卢西塔诺创始人的56.5%和14个单倍型（51.9%）是罕见的变异只发现一次在采样。四个主要的单倍型集群中存在的卢西塔诺品种。这些序列与其他马单倍型的比较表明，它们属于与其他马品种共享的组。这些数据支持多驯化事件在许多不同的地理区域在一个广泛的时间跨度的假设。然而，对145个Lusitano，55个Pura Raza Espanola和18个Sorraia序列的分析表明，一半的样品（50.9%）属于一个特定的簇（A），这是以前描述为伊比利亚和北方非洲马品种的特征。在星团A中存在着与其星状结构相关的非对称地理结构，这被解释为暗示了伊比利亚半岛的马驯化中心。
The analysis of mitochondrial D-loop sequences (408 bp) from 145 Lusitano founder mares yielded a total of 27 different haplotypes. The distribution of these mtDNA sequences was quite unequal, with the three most frequent ones representing 56.5% of all the Lusitano founder mares and 14 haplotypes (51.9%) being rare variants found only once in the sampling. Four main haplotype clusters were present in the Lusitano breed. The comparison of these sequences with other equine haplotypes shows that they fall in groups shared with other horse breeds. These data support the hypothesis of multiple domestication events in many distinct geographic areas over a broad time span. However, the analysis of 145 Lusitano, 55 Pura Raza Espanola and 18 Sorraia sequences indicates that half of the samples (50.9%) fall in one specific-cluster (A), which has previously been described as characteristic of the Iberian and Northern African horse breeds. The presence of a phylogeographic structure in cluster A associated with its star-like structure was interpreted as suggestive of a centre of horse domestication in the Iberia Peninsula.