MOUSSET, Mathilde; MARIN, Sara; ARCHAMBEAU, Juliette; BLOT, Christel; BONHOMME, Vincent; GARAUD, Laura; PUJOL, Benoît

doi:10.1080/23818107.2020.1857833

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

http://creativecommons.org/licenses/by-nc-nd/

MOUSSET, Mathilde
Evolution et Diversité Biologique [EDB]

MARIN, Sara
Centre de recherches insulaires et observatoire de l'environnement [CRIOBE]

ARCHAMBEAU, Juliette
Biodiversité, Gènes & Communautés [BioGeCo]

Langue

Article de revue

Ce document a été publié dans

Botany Letters. 2021p. 1-14

Taylor & Francis

Résumé en anglais

A classic example of phenotypic plasticity in plants is the set of traits that change in response to shade. There is widespread evidence that plants in low light conditions often avoid shade by growing taller or by increasing their photosynthetic efficiency, i.e. the shade avoidance syndrome. Whether this plasticity might evolve in response to natural selection depends upon the presence of its standing genetic variation in wild populations. There is limited evidence for heritable standing variation in the plastic response of plants to shade. In this study, we used an experimental common garden approach to investigate this plastic response in snapdragon plants (Antirrhinum majus L.) originating from four natural populations from the Mediterranean region. Our results showed that individual plants reacted strongly to the presence of shade by growing longer shoots, longer internodes, and increasing their specific leaf area in these four populations. Our results also revealed genetic variation for the plastic response within these populations, as well as little genetic constraints to its evolution. Our findings imply that natural populations of A. majus harbour standing genetic variation for phenotypic plasticity in response to shade, providing them the potential to evolve in response to selection.< Réduire

Mots clés en anglais

Phenotypic plasticity

shade avoidance syndrome

quantitative genetics

stem elongation

specific leaf area

DOI

http://dx.doi.org/10.1080/23818107.2020.1857833

Project ANR

Prédire la capacité des populations à s'adapter en fonction de leur histoire évolutive et de leur contexte environnemental - ANR-13-JSV7-0002

Origine

Importé de hal

Unités de recherche

BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202