Polymorphism of Chloroplast DNA and Phylogeography of Green Alder (Alnus alnobetula (Ehrh.) K. Koch s. l.) in Asiatic Russia

Holocene chloroplast genetic variation of shrubs (Alnus alnobetula, Betula nana, Salix sp.) at the siberian tundra‐taiga ecotone inferred from modern chloroplast genome assembly and sedimentary ancient DNA analyses

“…alnobetula from other geographical regions (Douda et al., 2014; Gryta et al., 2017; Hantemirova et al., 2018), which all report low intrapopulation variability and pronounced phylogeographic structure in this species. Considering the extensive geographic distances between Taymyr, Omoloy, and Kolyma, we detected a lower intrapopulation variability than studies on smaller areas of Europe and southern Asia (Douda et al., 2014; Gryta et al., 2017; Hantemirova et al., 2018). Overall, we identified 11 SNPs and 2 insertions as potential candidate biogeographic markers for the Taymyr region, 1 SNP for Omoloy, and 1 SNP for Kolyma which can be screened in future studies with larger sample sizes covering more populations.…”

“…Previous studies on modern Alnus , Betula, and Salix have successfully used shotgun metagenomics to explore chloroplast genetic variation and to infer population dynamics (Da̧browska et al., 2006; Eidesen et al., 2015; Jadwiszczak et al., 2012; Salojärvi et al., 2017; Li et al., 2005; Palmé, 2003; Thomson et al., 2015; Wu, 2015; Yang et al., 2018). Locations of glacial refugia and the direction of postglacial migrations of shrubs have been studied in different areas of Europe and Asia (Douda et al., 2014; Gryta et al., 2017; Hantemirova et al., 2018; Havrdová et al., 2015; Mandák et al., 2016; Petit et al., 2003), while the northern Siberian tundra‐taiga ecotone has been largely unexplored.…”