Eco-genetic additivity of diploids in allopolyploid wild wheats.

Details

Serval ID
serval:BIB_C999619F34E9
Type
Article: article from journal or magazin.
Collection
Publications
Title
Eco-genetic additivity of diploids in allopolyploid wild wheats.
Journal
Ecology letters
Author(s)
Huynh S., Broennimann O., Guisan A., Felber F., Parisod C.
ISSN
1461-0248 (Electronic)
ISSN-L
1461-023X
Publication state
Published
Issued date
04/2020
Peer-reviewed
Oui
Volume
23
Number
4
Pages
663-673
Language
english
Notes
Publication types: Letter
Publication Status: ppublish
Abstract
Underpinnings of the distribution of allopolyploid species (hybrids with duplicated genome) along spatial and ecological gradients are elusive. As allopolyploid speciation combines the range of genetic and ecological characteristics of divergent diploids, allopolyploids initially show their additivity and are predicted to evolve differentiated ecological niches to establish in face of their competition. Here, we use four diploid wild wheats that differentially combined into four independent allopolyploid species to test for such additivity and assess the impact of ecological constraints on species ranges. Divergent genetic variation from diploids being fixed in heterozygote allopolyploids supports their genetic additivity. Spatial integration of comparative phylogeography and modelling of climatic niches supports ecological additivity of locally adapted diploid progenitors into allopolyploid species which subsequently colonised wide ranges. Allopolyploids fill suitable range to a larger extent than diploids and conservative evolution following the combination of divergent species appears to support their expansion under environmental changes.
Keywords
Diploidy, Ecosystem, Humans, Phylogeography, Polyploidy, Triticum, Aegilops, amplicon sequencing, climate change, comparative niche modelling, comparative phylogeography, niche conservatism, polyploid speciation, range filling, species expansion
Pubmed
Web of science
Create date
31/12/2019 13:06
Last modification date
03/05/2020 7:02
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