Phenotypic diploidization in plant functional traits uncovered by synthetic neopolyploids in Dianthus broteri.
Dianthus broteri
Chlorophyll fluorescence
colchicine-induced autopolyploidy
functional traits
leaf gas exchange
phenotypic diploidization
photosynthesis
Journal
Journal of experimental botany
ISSN: 1460-2431
Titre abrégé: J Exp Bot
Pays: England
ID NLM: 9882906
Informations de publication
Date de publication:
28 07 2021
28 07 2021
Historique:
received:
22
09
2020
accepted:
26
04
2021
pubmed:
29
4
2021
medline:
10
8
2021
entrez:
28
4
2021
Statut:
ppublish
Résumé
Whole-genome duplication and post-polyploidization genome downsizing play key roles in the evolution of land plants; however, the impact of genomic diploidization on functional traits still remains poorly understood. Using Dianthus broteri as a model, we compared the ecophysiological behaviour of colchicine-induced neotetraploids (4xNeo) to diploids (2x) and naturally occurring tetraploids (4xNat). Leaf gas-exchange and chlorophyll fluorescence analyses were performed in order to asses to what extent post-polyploidization evolutionary processes have affected 4xNat. Genomic diploidization and phenotypic novelty were evident. Distinct patterns of variation revealed that post-polyploidization processes altered the phenotypic shifts directly mediated by genome doubling. The photosynthetic phenotype was affected in several ways but the main effect was phenotypic diploidization (i.e. 2x and 4xNat were closer to each other than to 4xNeo). Overall, our results show the potential benefits of considering experimentally synthetized versus naturally established polyploids when exploring the role of polyploidization in promoting functional divergence.
Identifiants
pubmed: 33909906
pii: 6257459
doi: 10.1093/jxb/erab179
pmc: PMC8760854
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
5522-5533Informations de copyright
© The Author(s) 2021. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com.
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