Complete mitochondrial genomes of Thai and Lao populations indicate an ancient origin of Austroasiatic groups and demic diffusion in the spread of Tai-Kadai languages.

Complete mitochondrial genomes of Thai and Lao populations indicate an ancient origin of Austroasiatic groups and demic diffusion in the spread of Tai-Kadai languages.
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DOI:
10.1007/s00439-016-1742-y
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发表时间:
2017-01
期刊:
影响因子:
5.3
通讯作者:
Stoneking, Mark
Stoneking, Mark
中科院分区:
生物学2区
文献类型:
--
作者:
Kutanan, Wibhu;Kampuansai, Jatupol;Srikummool, Metawee;Kangwanpong, Daoroong;Ghirotto, Silvia;Brunelli, Andrea;Stoneking, Mark

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Tai-Kadai(TK)语系被认为起源于中国南部,并传播到泰国和老挝,但目前尚不清楚TK语言是否通过流行扩散(即,从中国南方移民来的人)或文化传播,使原住民澳亚语系(AA)的人改用传统语言。为了解决这个问题和其他问题,我们从泰国和老挝的51个TK和AA组中获得了1234个完整的mtDNA基因组序列。我们发现该地区的遗传异质性很高,有212个不同的单倍型群,来自同一民族语言群体的不同样本之间存在显着的遗传分化。TK组比AA组遗传上更均一,后者表现出更多的古老/基底mtDNA谱系,并表现出更多的漂移效应。流行扩散,文化扩散和混合的情况下,建模一致支持的流行扩散的TK语言的传播。本文的在线版本(doi:10.1007/s 00439 -016-1742-y)包含补充材料,可供授权用户使用。
The Tai–Kadai (TK) language family is thought to have originated in southern China and spread to Thailand and Laos, but it is not clear if TK languages spread by demic diffusion (i.e., a migration of people from southern China) or by cultural diffusion, with native Austroasiatic (AA) speakers switching to TK languages. To address this and other questions, we obtained 1234 complete mtDNA genome sequences from 51 TK and AA groups from Thailand and Laos. We find high genetic heterogeneity across the region, with 212 different haplogroups, and significant genetic differentiation among different samples from the same ethnolinguistic group. TK groups are more genetically homogeneous than AA groups, with the latter exhibiting more ancient/basal mtDNA lineages, and showing more drift effects. Modeling of demic diffusion, cultural diffusion, and admixture scenarios consistently supports the spread of TK languages by demic diffusion. The online version of this article (doi:10.1007/s00439-016-1742-y) contains supplementary material, which is available to authorized users.
DOI: 10.1093/molbev/msl124
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