Genetic variation in Tertiary relics: The case of eastern‐Mediterranean Abies (Pinaceae). Issue 23 (22nd October 2017)

• Record Type: Journal Article
• Authors: Hrivnák, Matúš; Paule, Ladislav; Krajmerová, Diana; Kulaç, Şemsettin; Şevik, Hakan; Turna, İbrahim; Tvauri, Irina; Gömöry, Dušan
• Is Part Of: Ecology and evolution. Volume 7:Issue 23(2017:Dec.)
• Page Start: 10018
• Page End: 10030
• Publication Date: 2017-10-22
• Subjects: Abies bornmuelleriana -- Abies cilicica -- Abies equi‐trojani -- Abies nordmanniana -- Approximate Bayesian Computation -- diversity -- phylogeny; Ecology -- Periodicals; Evolution -- Periodicals; 577.05
• DOI: 10.1002/ece3.3519
• Languages: English
• ISSNs: 2045-7758

Abstract

Abstract: The eastern‐Mediterranean Abies taxa, which include both widely distributed species and taxa with minuscule ranges, represent a good model to study the impacts of range size and fragmentation on the levels of genetic diversity and differentiation. To assess the patterns of genetic diversity and phylogenetic relationships among eastern‐Mediterranean Abies taxa, genetic variation was assessed by eight nuclear microsatellite loci in 52 populations of Abies taxa with a focus on those distributed in Turkey and the Caucasus. Both at the population and the taxon level, the subspecies or regional populations of Abies nordmanniana s.l. exhibited generally higher allelic richness, private allelic richness, and expected heterozygosity compared with Abies cilicica s.l. Results of both theStructure analysis and distance‐based approaches showed a strong differentiation of the two A. cilicica subspecies from the rest as well as from each other, whereas the subspecies of A. nordmanniana were distinct but less differentiated. ABC simulations were run for a set of scenarios of phylogeny and past demographic changes. For A . × olcayana, the simulation gave a poor support for the hypothesis of being a taxon resulting from a past hybridization, the same is true for Abies equi‐trojani : both they represent evolutionary branches of Abies bornmuelleriana . Abstract : Phylogeny and impacts of range size and fragmentation on genetic diversity and differentiation were studied in 52 populations of eastern‐Mediterranean Abies taxa using nuclear microsatellites. The subspecies or regional populations of Abies nordmanniana s.l. exhibited generally higher allelic richness and diversity compared to Abies cilicica s.l. ABC simulations gave a poor support for hybrid origins of Abies × olcayana and Abies equi‐trojani : both they represent evolutionary branches of Abies bornmuelleriana .