Complete mitochondrial genomes of Thai and Lao populations indicate an ancient origin of Austroasiatic groups and demic diffusion in the spread of Tai–Kadai languagesReport as inadecuate




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 - Download this document for free, or read online. Document in PDF available to download.

Human Genetics

, Volume 136, Issue 1, pp 85–98

First Online: 11 November 2016Received: 14 September 2016Accepted: 27 October 2016

Abstract

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.

Electronic supplementary materialThe online version of this article doi:10.1007-s00439-016-1742-y contains supplementary material, which is available to authorized users.

An erratum to this article is available at http:-dx.doi.org-10.1007-s00439-017-1780-0.

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Author: Wibhu Kutanan - Jatupol Kampuansai - Metawee Srikummool - Daoroong Kangwanpong - Silvia Ghirotto - Andrea Brunelli - Mark S

Source: https://link.springer.com/







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