Demographic history of Scots pine in the Pleistocene in Northern Eurasia and the Caucasus region based on the analysis of nuclear microsatellite loci
N. V. SEMERIKOV, I. V. PETROVA
Instisute Botanical Garden UB RAS, Ekaterinburg, Russia
Keywords: Pinus sylvestris L, nSSR, genetic variability, refugia, historical demography
Abstract
Using nine nuclear microsatellite loci (nSSR), the structure of genetic variability of Scots pine in the Black Sea-Caucasus region, Eastern Europe, the Urals, Siberia and the Russian Far East was studied and the demographic history of these population groups was investigated using ABC-analysis. A significant differentiation between the populations of the Eastern Black Sea region and the main areal was confirmed, while the time of divergence between these groups was estimated at 0.5 million BP. The differentiation of the populations of the Greater Caucasus into western and eastern populations was found, probably due to migrations of Eastern European populations to the Western Caucasus. The nSSR similarity of the populations of the Crimea and Asia Minor is shown, probably as a result of their relatively recent differentiation. The nSSR analysis revealed a significant differentiation between the populations of the Russian Far East and the rest of the populations of the northern part of the range. The divergence time between these groups of populations was estimated using ABC-analysis at 97 thousand BP, which confirms the survival of the scots pine in the Russian Far East during the last glacial maximum.
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