High-throughput sequencing of complete human mtDNA genomes from the Caucasus and West Asia: high diversity and demographic inferences. - Archive ouverte HAL Access content directly
Journal Articles European Journal of Human Genetics Year : 2011

High-throughput sequencing of complete human mtDNA genomes from the Caucasus and West Asia: high diversity and demographic inferences.

Ivan Nasidze
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Mingkun Li
Mark Stoneking

Abstract

To investigate the demographic history of human populations from the Caucasus and surrounding regions, we used high-throughput sequencing to generate 147 complete mtDNA genome sequences from random samples of individuals from three groups from the Caucasus (Armenians, Azeri and Georgians), and one group each from Iran and Turkey. Overall diversity is very high, with 144 different sequences that fall into 97 different haplogroups found among the 147 individuals. Bayesian skyline plots (BSP) of population size change through time show a population expansion around 40-50 kya, followed by a constant population size, and then another expansion around 15-18 kya for the groups from the Caucasus and Iran. The BSP for Turkey differs the most from the others, with an increase from 35-50 kya followed by a prolonged period of constant population size, and no indication of a second period of growth. An approximate Bayesian computation (ABC) approach was used to estimate divergence times between each pair of populations; the oldest divergence times were between Turkey and the other four groups from the South Caucasus and Iran (~400-600 generations), while the divergence time of the three Caucasus groups from each other was comparable to their divergence time from Iran (average of ~360 generations). These results illustrate the value of random sampling of complete mtDNA genome sequences that can be obtained with high-throughput sequencing platforms.
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Dates and versions

hal-00631669 , version 1 (13-10-2011)

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Ivan Nasidze, Anna Schönberg, Christoph Theunert, Mingkun Li, Mark Stoneking. High-throughput sequencing of complete human mtDNA genomes from the Caucasus and West Asia: high diversity and demographic inferences.. European Journal of Human Genetics, 2011, ⟨10.1038/ejhg.2011.62⟩. ⟨hal-00631669⟩

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