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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F14%3A10293196%21RIV15-MSM-11310___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
The Alyssum montanum-A. repens polyploid complex is a group of related perennial taxa with a diversity centre in the European (Sub)Mediterranean, controversial taxonomic treatments, and a poorly known evolutionary history. In the present study, morphological, ploidy level and genetic (AFLPs and chloroplast DNA sequences) data were collected to address the taxonomy and evolution of a sublineage of this complex distributed in southwestern Europe and Morocco. As a result, a new taxonomic treatment, differing substantially from recent concepts, is presented, including an identification key, synonymy and typifications. The recognition of several previously described but recently not accepted endemics is favoured (A. flexicaule, A. orophilum, A. rhodanense), whereas the existence of southern Iberian endemics is not supported. Most of the Iberian Peninsula is occupied by a single species for which the name A. fastigiatum is applicable. Populations from the summit areas of the Pyrenees represent a separate species, which is described here as A. cacuminum. Populations from coastal sand dunes in the Basque country (Bay of Biscay) and Galicia, recently recognised as two subspecies of A. loiseleurii, are elevated to species rank according to their genetic and morphological divergence. A. atlanticum is resolved as a species confined to northern Africa and not reaching southern Spain. The distribution of A. montanum in a strict sense is much more restricted than previously reported, being delimited by the Pyrenees in the south, and the Alps in the northeast. The species complex studied here is composed of several polyploid stenoendemics confined to different mountain ranges or specific lowland habitats, and a few relatively widely distributed species. We infer that hybridisation and polyploidisation events, along with ecological and geographic isolation, have stimulated speciation in this complex. Hypotheses about the origin and evolutionary history of the species are discussed. The Alyssum montanum-A. repens polyploid complex is a group of related perennial taxa with a diversity centre in the European (Sub)Mediterranean, controversial taxonomic treatments, and a poorly known evolutionary history. In the present study, morphological, ploidy level and genetic (AFLPs and chloroplast DNA sequences) data were collected to address the taxonomy and evolution of a sublineage of this complex distributed in southwestern Europe and Morocco. As a result, a new taxonomic treatment, differing substantially from recent concepts, is presented, including an identification key, synonymy and typifications. The recognition of several previously described but recently not accepted endemics is favoured (A. flexicaule, A. orophilum, A. rhodanense), whereas the existence of southern Iberian endemics is not supported. Most of the Iberian Peninsula is occupied by a single species for which the name A. fastigiatum is applicable. Populations from the summit areas of the Pyrenees represent a separate species, which is described here as A. cacuminum. Populations from coastal sand dunes in the Basque country (Bay of Biscay) and Galicia, recently recognised as two subspecies of A. loiseleurii, are elevated to species rank according to their genetic and morphological divergence. A. atlanticum is resolved as a species confined to northern Africa and not reaching southern Spain. The distribution of A. montanum in a strict sense is much more restricted than previously reported, being delimited by the Pyrenees in the south, and the Alps in the northeast. The species complex studied here is composed of several polyploid stenoendemics confined to different mountain ranges or specific lowland habitats, and a few relatively widely distributed species. We infer that hybridisation and polyploidisation events, along with ecological and geographic isolation, have stimulated speciation in this complex. Hypotheses about the origin and evolutionary history of the species are discussed.
dcterms:title
Taxonomy and evolutionary history of Alyssum montanum (Brassicaceae) and related taxa in southwestern Europe and Morocco: Diversification driven by polyploidy, geographic and ecological isolation Taxonomy and evolutionary history of Alyssum montanum (Brassicaceae) and related taxa in southwestern Europe and Morocco: Diversification driven by polyploidy, geographic and ecological isolation
skos:prefLabel
Taxonomy and evolutionary history of Alyssum montanum (Brassicaceae) and related taxa in southwestern Europe and Morocco: Diversification driven by polyploidy, geographic and ecological isolation Taxonomy and evolutionary history of Alyssum montanum (Brassicaceae) and related taxa in southwestern Europe and Morocco: Diversification driven by polyploidy, geographic and ecological isolation
skos:notation
RIV/00216208:11310/14:10293196!RIV15-MSM-11310___
n3:aktivita
n18:P n18:I
n3:aktivity
I, P(GAP506/12/0668)
n3:cisloPeriodika
3
n3:dodaniDat
n5:2015
n3:domaciTvurceVysledku
n12:8151857 n12:8977372
n3:druhVysledku
n17:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
49360
n3:idVysledku
RIV/00216208:11310/14:10293196
n3:jazykVysledku
n6:eng
n3:klicovaSlova
taxonomy; polyploidy; morphometrics; Iberian Peninsula; Alyssum; AFLPs
n3:klicoveSlovo
n4:Alyssum n4:Iberian%20Peninsula n4:polyploidy n4:morphometrics n4:taxonomy n4:AFLPs
n3:kodStatuVydavatele
SK - Slovenská republika
n3:kontrolniKodProRIV
[6B5112FFC991]
n3:nazevZdroje
Taxon
n3:obor
n9:EF
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:projekt
n15:GAP506%2F12%2F0668
n3:rokUplatneniVysledku
n5:2014
n3:svazekPeriodika
63
n3:tvurceVysledku
Zozomová-Lihová, Judita Španiel, Stanislav Marhold, Karol
n3:wos
000338755600006
s:issn
0040-0262
s:numberOfPages
30
n10:doi
10.12705/633.18
n16:organizacniJednotka
11310