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Contrasting paternal and maternal genetic histories of Thai and Lao populations

พิมพ์โดย: 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.

ทรัพยากรข้อมูล (1)

ตัวอย่างทรัพยากรข้อมูล - Contrasting paternal and maternal genetic histories of Thai and Lao populations

ข้อมูลเพิ่มเติม

ฟิลด์ ค่า
ประเภทเอกสาร Reports, journal articles, and research papers (including theses and dissertations)
ภาษาของเอกสาร
  • ภาษาอังกฤษ
หัวข้อเรื่อง Ethnic minorities and indigenous people
พื้นที่ทางภูมิศาสตร์ (ช่วงข้อมูล)
  • ลาว
  • ไทย
ลิขสิทธิ์ Yes
เวอร์ชั่น / รุ่น 1
ใบอนุญาต Creative Commons Attribution
ผู้แต่ง (บุคคล) Kutanan, Wibhu, Jatupol Kampuansai, Metawee Srikummool, Andrea Brunelli, Silvia Ghirotto, Leonardo Arias, Enrico Macholdt, Alexander Huebner, Roland Schroeder, and Mark Stoneking
วันที่พิมพ์ 2019
จำนวนหน้า 54
วันที่อัพโหลด เมษายน 18, 2019, 06:38 (UTC)
แก้ไขเมื่อ ธันวาคม 5, 2019, 06:50 (UTC)