Spatial patterns and intraspecific diversity of the glacial relict legume species Vavilovia formosa (Stev.) Fed. in Eurasia

Petr Smýkal, Michala Chaloupská, Michael Bariotakis, Lucie Marečková, Andrey Sinjushin, Ivan Gabrielyan, Janna Akopian, Cengiz Toker, Gregory Kenicer, Miloslav Kitner, Stergios Pirintsos

Research output: Contribution to journalArticlepeer-review

Abstract

Vavilovia formosa is one of five genera in tribe Fabeae, (Fabaceae, Leguminosae) with close phylogenetic relationships to Pisum. It grows in subalpine and alpine levels in Armenia, Azerbaijan, Georgia, Iran, Iraq, Lebanon, Russia and Turkey and is recognized as an endangered and protected plant. This study was conducted to reveal its intraspecific variability, as well as to predict the past, extant and future species distribution range. We analysed 51 accessions with common phylogenetic markers (trnF-trnL, trnS-trnG, matK, rbcL, psbA-trnH and ITS). These represent in total up to 2551 bp of chloroplast and 664 bp of nuclear sequences per sample. Two populations from Turkey and Armenia were analysed for genetic diversity by AFLP. Leaf morphometry was conducted on 1457 leaflets from 43 specimens. Extracted bioclimatic parameters were used for niche-modelling approach. Analysis of cpDNA revealed two haplotypes, 12 samples from Armenia, Daghestan, Nakhichevan and Iran belonged to H1 group, while 39 samples of all Turkish and part of Armenian were in H2 group. The mean intrapopulation diversity based on AFLP was low (HE = 0.088) indicating limited outcrossing rate. A significantly positive correlation between geographical latitude and leaf area (ρ = 0.527, p < 0.05) was found. Niche modelling has shown temporal variation of predicted occurrence across the projected time periods. Vavilovia formosa has suffered a range reduction following climate warming after last glacial maximum, which classify this species as cold-adapted among the Fabeae species as well as a glacial relict.

Original languageEnglish
Pages (from-to)267-282
Number of pages16
JournalPlant Systematics and Evolution
Volume303
Issue number3
Early online date20 Jan 2017
DOIs
Publication statusPublished - 1 Mar 2017

Keywords

  • Conservation
  • Fabeae
  • Genetic diversity
  • Last glacial maximum
  • Pisum
  • Population genetics
  • Relict
  • Vavilovia formosa

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