The polyploid Alyssum montanum-A. repens complex in the Balkans: a hotspot of species and genetic diversity

The Balkan Peninsula is an important diversity and speciation centre for many species groups. The high genetic, karyological and morphological complexity of the Alyssum montanum-A. repens species group (Brassicaceae) in the Balkans makes it a challenging study subject for exploring different speciat...

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Vydáno v:Plant systematics and evolution Ročník 303; číslo 10; s. 1443 - 1465
Hlavní autoři: Španiel, Stanislav, Marhold, Karol, Zozomová-Lihová, Judita
Médium: Journal Article
Jazyk:angličtina
Vydáno: Vienna Springer-Verlag GmbH 01.12.2017
Springer Vienna
Springer Nature B.V
Témata:
allopatry
Alyssum montanum
Alyssum repens
amplified fragment length polymorphism
Balkans
Biodiversity
Biomedical and Life Sciences
Chloroplast DNA
Chloroplasts
Complexity
Deoxyribonucleic acid
DNA
Evolutionary genetics
Gene sequencing
Genetic diversity
genetic variation
Greece
Hybridization
Life Sciences
Morphology
Nucleotide sequence
nucleotide sequences
Original Article
Phylogeny
Plant Anatomy/Development
Plant Ecology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Plants
Ploidy
Polyploidy
Speciation
Species
Species diversity
Taxa
Taxonomy
vascular plants
Balkan Peninsula
Greece
Balkans
Allopatric differentiation
Disjunction
Polyploidy
Carpathians
Balkan Peninsula
ISSN:0378-2697, 1615-6110, 2199-6881
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Shrnutí:The Balkan Peninsula is an important diversity and speciation centre for many species groups. The high genetic, karyological and morphological complexity of the Alyssum montanum-A. repens species group (Brassicaceae) in the Balkans makes it a challenging study subject for exploring different speciation mechanisms and their taxonomic consequences. In the present study, ploidy level and genetic (AFLPs and chloroplast DNA sequences) data were examined and confronted with recent taxonomic concepts. Remarkable genetic and morphological variation, which is often geographically structured, and high incidence of polyploids suggest a very complex evolutionary history in this area, involving allopatric differentiation and past hybridisation and polyploidisation events. A new taxonomic treatment, differing substantially from recent concepts, is suggested. Several previously recognised taxa, including many endemics, such as A. austrodalmaticum, A. handelii, A. moellendorfianum, A. pirinicum and A. wierzbickii, are confirmed as distinct. Several other taxa are suggested to be resurrected or elevated to the species level, namely, A. bosniacum, A. montenegrinum, A. reiseri and A. vernale. Phylogenetic relationships among populations from the central Balkans and Greece are still partly blurred apparently due to more extensive reticulations, and their taxonomic classifications remain provisional. They are treated here under the tentative name A. spruneri. The patterns of variation revealed in the present study highlight the importance of the Balkan Peninsula for the persistence and diversification of vascular plants.
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ISSN:0378-2697
1615-6110
2199-6881
DOI:10.1007/s00606-017-1470-3