Informace o publikaci

Genetic and morphological variation in the circumpolar distribution range of Sphagnum warnstorfii: indications of vicariant divergence in a common peatmoss.

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YOUSEFI Narjes MIKULÁŠKOVÁ Eva STENOIEN Hans K. FLATBERG Kjell Ivar. KOŠUTHOVÁ Alica HÁJEK Michal HASSEL Kristian

Rok publikování 2019
Druh Článek v odborném periodiku
Časopis / Zdroj Botanical Journal of the Linnean society
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://academic.oup.com/botlinnean/article-abstract/189/4/408/5420233
Doi http://dx.doi.org/10.1093/botlinnean/boy086
Klíčová slova Arctic; bryophytes; cluster analysis; divergence; glacial refugia
Popis The Quaternary climatic oscillations caused pronounced changes in the distribution of the genetic variation among populations as well as phenotypic diversification worldwide. However, how important these processes have been in plants with high gene flow potential has been less studied. Sphagnum warnstorfii is a peatmoss species with a wide circumpolar distribution range exhibiting considerable morphological variation. In particular, many Arctic plants differ morphologically from plants in the rest of its distribution range. We used single nucleotide polymorphism (SNP) genotyping to investigate the patterns of genetic diversity in 112 plants from 105 localities sampled throughout the species distribution range and explored how this was correlated with phenotypic variation. Genetic cluster analysis identified two main genetic lineages with an average FST of 0.21 between them. The first cluster is restricted to the Arctic region, whereas the second has a wider distribution range covering the Arctic, boreal and boreo-nemoral regions of Eurasia and North America. We show that morphological variation is mostly concordant with patterns of genetic differentiation, and possibly representing adaptation to local environments. Based on approximate Bayesian computation simulations, we find that the two lineages probably diverged from each other before the Last Glacial Maximum (LGM). Our results show that vicariance due to glacial oscillations probably played a role for current patterns of diversification in a common peatmoss exhibiting a high gene flow potential.
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