MARIN, Sara; GIBERT, Anaïs; ARCHAMBEAU, Juliette; BONHOMME, Vincent; LASCOSTE, Mylène; PUJOL, Benoit

doi:10.1111/mec.15546

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MARIN, Sara
Centre de recherches insulaires et observatoire de l'environnement [CRIOBE]
Evolution et Diversité Biologique [EDB]

GIBERT, Anaïs
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

Molecular Ecology. 2020, vol. 29, n° 16, p. 3010-3021

Wiley

Résumé en anglais

Phenotypic divergence among natural populations can be explained by natural selection or by neutral processes such as drift. Many examples in the literature compare putatively neutral (FST) and quantitative genetic (QST) differentiation in multiple populations to assess their evolutionary signature and identify candidate traits involved with local adaptation. Investigating these signatures in closely related or recently diversified species has the potential to shed light on the divergence processes acting at the interspecific level. Here, we conducted this comparison in two subspecies of snapdragon plants (eight populations of Antirrhinum majus pseudomajus and five populations of A. m. striatum) in a common garden experiment. We also tested whether altitude was involved with population phenotypic divergence. Our results identified candidate phenological and morphological traits involved with local adaptation. Most of these traits were identified in one subspecies but not the other. Phenotypic divergence increased with altitude for a few biomass‐related traits, but only in A. m. striatum. These traits therefore potentially reflect A. m. striatum adaptation to altitude. Our findings imply that adaptive processes potentially differ at the scale of A. majus subspecies.< Réduire

Mots clés en anglais

altitudinal gradient

Antirrhinum majus

local adaptation

quantitative genetics

subspecies divergence

DOI

http://dx.doi.org/10.1111/mec.15546

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
Towards a Unified theory of biotic Interactions: the roLe of environmental - ANR-10-LABX-0041
CEnter of the study of Biodiversity in Amazonia - ANR-10-LABX-0025

Origine

Importé de hal

Unités de recherche

BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202