Climate as a driver of adaptive variations ...
Type de document :
Compte-rendu et recension critique d'ouvrage
DOI :
Titre :
Climate as a driver of adaptive variations in ecological strategies in Arabidopsis thaliana
Auteur(s) :
Vasseur, François [Auteur]
Écophysiologie des Plantes sous Stress environnementaux [LEPSE]
Sartori, Kevin [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Baron, Etienne [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Fort, Florian [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Kazakou, Elena [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Segrestin, Jules [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Garnier, Eric [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Vile, Denis [Auteur]
Écophysiologie des Plantes sous Stress environnementaux [LEPSE]
Violle, Cyrille [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Écophysiologie des Plantes sous Stress environnementaux [LEPSE]
Sartori, Kevin [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Baron, Etienne [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Fort, Florian [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Kazakou, Elena [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Segrestin, Jules [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Garnier, Eric [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Vile, Denis [Auteur]
Écophysiologie des Plantes sous Stress environnementaux [LEPSE]
Violle, Cyrille [Auteur]
Centre d’Ecologie Fonctionnelle et Evolutive [CEFE]
Titre de la revue :
Annals of Botany
Pagination :
935-945
Éditeur :
Oxford University Press (OUP)
Date de publication :
2018
ISSN :
0305-7364
Mot(s)-clé(s) en anglais :
Arabidopsis thaliana
Adaptive differentiation
Climate
CSR classification
Ecological strategy
Functional trait
Genetic diversity
Grime triangle
Latitudinal gradient
Trait–environment relationships
QST–FST
Adaptive differentiation
Climate
CSR classification
Ecological strategy
Functional trait
Genetic diversity
Grime triangle
Latitudinal gradient
Trait–environment relationships
QST–FST
Discipline(s) HAL :
Sciences du Vivant [q-bio]/Biologie végétale/Botanique
Sciences du Vivant [q-bio]/Ecologie, Environnement/Bioclimatologie
Sciences du Vivant [q-bio]/Ecologie, Environnement/Bioclimatologie
Résumé en anglais : [en]
ackground and aimsThe CSR classification categorizes plants as stress tolerators (S), ruderals (R) and competitors (C). Initially proposed as a general framework to describe ecological strategies across species, this scheme ...
Lire la suite >ackground and aimsThe CSR classification categorizes plants as stress tolerators (S), ruderals (R) and competitors (C). Initially proposed as a general framework to describe ecological strategies across species, this scheme has recently been used to investigate the variation of strategies within species. For instance, ample variation along the S–R axis was found in Arabidopsis thaliana, with stress-tolerator accessions predominating in hot and dry regions, which was interpreted as a sign of functional adaptation to climate within the species.MethodsIn this study the range of CSR strategies within A. thaliana was evaluated across 426 accessions originating from North Africa to Scandinavia. A position in the CSR strategy space was allocated for every accession based on three functional traits: leaf area, leaf dry matter content (LDMC) and specific leaf area (SLA). Results were related to climate at origin and compared with a previous study performed on the same species. Furthermore, the role of natural selection in phenotypic differentiation between lineages was investigated with QST–FST comparisons, using the large amount of genetic information available for this species.Key ResultsSubstantial variation in ecological strategies along the S–R axis was found in A. thaliana. By contrast with previous findings, stress-tolerator accessions predominated in cold climates, notably Scandinavia, where late flowering was associated with traits related to resource conservation, such as high LDMC and low SLA. Because of trait plasticity, variations in CSR classification in relation to growth conditions were also observed for the same genotypes.ConclusionsThere is a latitudinal gradient of ecological strategies in A. thaliana as a result of within-species adaptation to climate. Our study also underlines the importance of growth conditions and of the methodology used for trait measurement, notably age versus stage measurement, to infer the strength and direction of trait–environment relationships. This highlights the potential and limitations of the CSR classification in explaining functional adaptation to the environment.Lire moins >
Lire la suite >ackground and aimsThe CSR classification categorizes plants as stress tolerators (S), ruderals (R) and competitors (C). Initially proposed as a general framework to describe ecological strategies across species, this scheme has recently been used to investigate the variation of strategies within species. For instance, ample variation along the S–R axis was found in Arabidopsis thaliana, with stress-tolerator accessions predominating in hot and dry regions, which was interpreted as a sign of functional adaptation to climate within the species.MethodsIn this study the range of CSR strategies within A. thaliana was evaluated across 426 accessions originating from North Africa to Scandinavia. A position in the CSR strategy space was allocated for every accession based on three functional traits: leaf area, leaf dry matter content (LDMC) and specific leaf area (SLA). Results were related to climate at origin and compared with a previous study performed on the same species. Furthermore, the role of natural selection in phenotypic differentiation between lineages was investigated with QST–FST comparisons, using the large amount of genetic information available for this species.Key ResultsSubstantial variation in ecological strategies along the S–R axis was found in A. thaliana. By contrast with previous findings, stress-tolerator accessions predominated in cold climates, notably Scandinavia, where late flowering was associated with traits related to resource conservation, such as high LDMC and low SLA. Because of trait plasticity, variations in CSR classification in relation to growth conditions were also observed for the same genotypes.ConclusionsThere is a latitudinal gradient of ecological strategies in A. thaliana as a result of within-species adaptation to climate. Our study also underlines the importance of growth conditions and of the methodology used for trait measurement, notably age versus stage measurement, to infer the strength and direction of trait–environment relationships. This highlights the potential and limitations of the CSR classification in explaining functional adaptation to the environment.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Source :
Fichiers
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6266113/pdf
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