Recurrent allopolyploidizations diversify ecophysiological traits in marsh orchids (Dactylorhiza majalis s.l.)
(2023) In Molecular Ecology 32(17). p.4777-4790- Abstract
Whole-genome duplication has shaped the evolution of angiosperms and other organisms, and is important for many crops. Structural reorganization of chromosomes and repatterning of gene expression are frequently observed in allopolyploids, with physiological and ecological consequences. Recurrent origins from different parental populations are widespread among polyploids, resulting in an array of lineages that provide excellent models to uncover mechanisms of adaptation to divergent environments in early phases of polyploid evolution. We integrate here transcriptomic and ecophysiological comparative studies to show that sibling allopolyploid marsh orchid species (Dactylorhiza, Orchidaceae) occur in different habitats (low nutrient fens... (More)
Whole-genome duplication has shaped the evolution of angiosperms and other organisms, and is important for many crops. Structural reorganization of chromosomes and repatterning of gene expression are frequently observed in allopolyploids, with physiological and ecological consequences. Recurrent origins from different parental populations are widespread among polyploids, resulting in an array of lineages that provide excellent models to uncover mechanisms of adaptation to divergent environments in early phases of polyploid evolution. We integrate here transcriptomic and ecophysiological comparative studies to show that sibling allopolyploid marsh orchid species (Dactylorhiza, Orchidaceae) occur in different habitats (low nutrient fens vs. meadows with mesic soils) and are characterized by a complex suite of intertwined, pronounced ecophysiological differences between them. We uncover distinct features in leaf elemental chemistry, light-harvesting, photoprotection, nutrient transport and stomata activity of the two sibling allopolyploids, which appear to match their specific ecologies, in particular soil chemistry differences at their native sites. We argue that the phenotypic divergence between the sibling allopolyploids has a clear genetic basis, generating ecological barriers that maintain distinct, independent lineages, despite pervasive interspecific gene flow. This suggests that recurrent origins of polyploids bring about a long-term potential to trigger and maintain functional and ecological diversity in marsh orchids and other groups.
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- author
- Wolfe, Thomas M. ; Balao, Francisco ; Trucchi, Emiliano ; Bachmann, Gert ; Gu, Wenjia ; Baar, Juliane ; Hedrén, Mikael LU ; Weckwerth, Wolfram ; Leitch, Andrew R. and Paun, Ovidiu
- organization
- publishing date
- 2023-09
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- allopolyploidy, Dactylorhiza, differential expression, ecological differentiation, photosynthesis, soil chemistry
- in
- Molecular Ecology
- volume
- 32
- issue
- 17
- pages
- 4777 - 4790
- publisher
- Wiley-Blackwell
- external identifiers
-
- pmid:37452724
- scopus:85165289979
- ISSN
- 0962-1083
- DOI
- 10.1111/mec.17070
- language
- English
- LU publication?
- yes
- id
- d3a81906-0c95-4a08-91d7-89e316fbb20c
- date added to LUP
- 2023-09-25 15:07:06
- date last changed
- 2024-04-19 01:38:59
@article{d3a81906-0c95-4a08-91d7-89e316fbb20c,
abstract = {{<p>Whole-genome duplication has shaped the evolution of angiosperms and other organisms, and is important for many crops. Structural reorganization of chromosomes and repatterning of gene expression are frequently observed in allopolyploids, with physiological and ecological consequences. Recurrent origins from different parental populations are widespread among polyploids, resulting in an array of lineages that provide excellent models to uncover mechanisms of adaptation to divergent environments in early phases of polyploid evolution. We integrate here transcriptomic and ecophysiological comparative studies to show that sibling allopolyploid marsh orchid species (Dactylorhiza, Orchidaceae) occur in different habitats (low nutrient fens vs. meadows with mesic soils) and are characterized by a complex suite of intertwined, pronounced ecophysiological differences between them. We uncover distinct features in leaf elemental chemistry, light-harvesting, photoprotection, nutrient transport and stomata activity of the two sibling allopolyploids, which appear to match their specific ecologies, in particular soil chemistry differences at their native sites. We argue that the phenotypic divergence between the sibling allopolyploids has a clear genetic basis, generating ecological barriers that maintain distinct, independent lineages, despite pervasive interspecific gene flow. This suggests that recurrent origins of polyploids bring about a long-term potential to trigger and maintain functional and ecological diversity in marsh orchids and other groups.</p>}},
author = {{Wolfe, Thomas M. and Balao, Francisco and Trucchi, Emiliano and Bachmann, Gert and Gu, Wenjia and Baar, Juliane and Hedrén, Mikael and Weckwerth, Wolfram and Leitch, Andrew R. and Paun, Ovidiu}},
issn = {{0962-1083}},
keywords = {{allopolyploidy; Dactylorhiza; differential expression; ecological differentiation; photosynthesis; soil chemistry}},
language = {{eng}},
number = {{17}},
pages = {{4777--4790}},
publisher = {{Wiley-Blackwell}},
series = {{Molecular Ecology}},
title = {{Recurrent allopolyploidizations diversify ecophysiological traits in marsh orchids (Dactylorhiza majalis s.l.)}},
url = {{http://dx.doi.org/10.1111/mec.17070}},
doi = {{10.1111/mec.17070}},
volume = {{32}},
year = {{2023}},
}