Skip to content

Contrasting paternal and maternal genetic histories of Thai and Lao populations

បោះពុម្ពផ្សាយដោយ៖ Open Development Laos

The human demographic history of Mainland Southeast Asia (MSEA) has not been well-studied; in particular there have been very few sequence-based studies of variation in the male-specific portions of the Y chromosome (MSY). Here, we report new MSY sequences of ~2.3 mB from 914 males, and combine these with previous data for a total of 928 MSY sequences belonging to 59 populations from Thailand and Laos who speak languages belonging to three major MSEA families: Austroasiatic (AA), Tai-Kadai (TK) and Sino-Tibetan (ST). Among the 92 MSY haplogroups, two main MSY lineages (O1b1a1a (O-M95) and O2a (O-M324)) contribute substantially to the paternal genetic makeup of Thailand and Laos. We also analyse complete mtDNA genome sequences published previously from the same groups, and find contrasting pattern of male and female genetic variation and demographic expansions, especially for the hill tribes, Mon, and some major Thai groups. In particular, we detect an effect of post-marital residence pattern on genetic diversity in patrilocal vs. matrilocal groups. Additionally, both male and female demographic expansions were observed during the early Mesolithic (~10 kya), with two later major male-specific expansions during the Neolithic period (~4-5 kya) and the Bronze/Iron Age (~2.0-2.5 kya). These two later expansions are characteristic of the modern AA and TK groups, respectively, consistent with recent ancient DNA studies. We simulate MSY data based on three demographic models (continuous migration, demic diffusion and cultural diffusion) of major Thai groups and find different results from mtDNA simulations, supporting contrasting male and female genetic histories.

ធនធានទិន្នន័យ (1)

មើល​ធនធានទិន្នន័យ - Contrasting paternal and maternal genetic histories of Thai and Lao populations

Additional Info

Field Value
ប្រភេទឯកសារ Reports, journal articles, and research papers (including theses and dissertations)
ភាសារបស់ឯកសារ
  • ភាសាអង់គ្លេស
ប្រធានបទ Ethnic minorities and indigenous people
តំបន់ភូមិសាស្រ្ត (ការលាតសន្ធឹងក្នុងលំហ)
  • ឡាវ
  • ថៃ
សិទ្ធិ Yes
កំណែ/បោះពុម្ពលើកទី 1
អាជ្ញាប័ណ្ណ Creative Commons Attribution
អ្នកនិពន្ធ (ជាបុគ្គល) Kutanan, Wibhu, Jatupol Kampuansai, Metawee Srikummool, Andrea Brunelli, Silvia Ghirotto, Leonardo Arias, Enrico Macholdt, Alexander Huebner, Roland Schroeder, and Mark Stoneking
កាលបរិច្ឆេទបោះពុម្ព 2019
ការបង់លេខ 54
កាលបរិច្ឆេទផ្ទុកឡើង មេសា 18, 2019, 06:38 (UTC)
កាលបរិច្ឆេទកែប្រែ ធ្នូ 5, 2019, 06:50 (UTC)