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Record number 508161
Title Ancient split of major genetic lineages of European Black Pine : evidence from chloroplast DNA
Author(s) Naydenov, Krassimir D.; Naydenov, Michel K.; Alexandrov, Alexander; Vasilevski, Kole; Gyuleva, Veselka; Matevski, Vlado; Nikolic, Biljana; Goudiaby, Venceslas; Bogunic, Faruk; Paitaridou, Despina; Christou, Andreas; Goia, Irina; Carcaillet, Christopher; Alcantara, Adrian Escudero; Ture, Cengiz; Gulcu, Suleyman; Peruzzi, Lorenzo; Kamary, Salim; Bojovic, Srdjan; Hinkov, Georgi; Tsarev, Anatoly
Source Tree Genetics and Genomes 12 (2016)4. - ISSN 1614-2942
DOI http://dx.doi.org/10.1007/s11295-016-1022-y
Department(s) Forest Ecology and Forest Management
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) Chloroplast DNA - Phylogeography - Pinus nigra - Population structure - SNP - SSR
Abstract

The European Black Pine (Pinus nigra Arn.) has a long and complex history. Genetic distance and frequency analyses identified three differentiated genetic groups, which corresponded to three wide geographical areas: Westerns Mediterranean, Balkan Peninsula and Asia Minor. These groups shared common ancestors (14.75 and 10.72 Ma). The most recent splits occurred after the Messinian Salinity Crisis (4.37 Ma) and the Early–Middle Pleistocene Transitions (0.93 Ma). The posterior ancestral population size (Na) is 260,000–265,000 individuals. Each pool is further fragmented, with evidence of a phylogeographic structure (Nst > Gst) typically observed in some natural populations from the Western Mediterranean region and the Balkan Peninsula. The laboratory analysis was performed by fragment analysis—i.e. electrophoretic sizing of polymerase chain reaction fragments, combined with the sequencing analysis of 33 % of all individuals as a control. Intense sampling of chloroplast DNA polymorphisms (3154 individuals and 13 markers: SNPs and SSRs) over the full area of the species’ natural distribution indicated moderate among-population variability (Gst(nc) ≤ 0.177) in various parts of its range. These results indicate that the natural populations have long migration histories that differ from one another and that they have been strongly phylogeographically affected by complex patterns of isolation, speciation and fragmentation. Long and varying climatic fluctuations in the region of the principal genetic group have been the probable cause of different forest community associations with different successional patterns resulting in interglacial refugia vs. macro long-term refugia.

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