PROHASKA, Alexandre; PETIT, Aurélie; LESEMANN, Silke; REY-SERRA, Pol; MAZZONI, Luca; MASNY, Agnieszka; SÁNCHEZ-SEVILLA, José; GASTON, Amèlia; KLAMKOWSKI, Krzysztof; ROTHAN, Christophe; MEZZETTI, Bruno; AMAYA, Iraida; OLBRICHT, Klaus; DENOYES, Béatrice

doi:10.1093/jxb/erae279/7700919

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PROHASKA, Alexandre
Biologie du fruit et pathologie [BFP]
Invenio

PETIT, Aurélie
Biologie du fruit et pathologie [BFP]
Invenio

LESEMANN, Silke
Hansabred GmbH&Co

Langue

Article de revue

Ce document a été publié dans

Journal of Experimental Botany. 2024-06-28, vol. 75, n° 18, p. 5923-5939

Oxford University Press (OUP)

Résumé en anglais

<div><p>Flowering time (FT), which determines when fruits or seeds can be harvested, is subject to phenotypic plasticity, that is, the ability of a genotype to display different phenotypes in response to environmental variation. Here, we investigated how the environment affects the genetic architecture of FT in cultivated strawberry (Fragaria × ananassa) and modifies its quantitative trait locus (QTL) effects. To this end, we used a bi-parental segregating population grown for 2 years at widely divergent latitudes (five European countries) and combined climatic variables with genomic data (Affymetrix SNP array). Examination, using different phenological models, of the response of FT to photoperiod, temperature, and global radiation indicated that temperature is the main driver of FT in strawberry. We next characterized in the segregating population the phenotypic plasticity of FT by using three statistical approaches that generated plasticity parameters including reaction norm parameters. We detected 25 FT QTLs summarized as 10 unique QTLs. Mean values and plasticity parameter QTLs were co-localized in three of them, including the major 6D_M QTL whose effect is strongly modulated by temperature. The design and validation of a genetic marker for the 6D_M QTL offers great potential for breeding programs, for example selecting early-flowering strawberry varieties well adapted to different environmental conditions.</p></div>< Réduire

Mots clés en anglais

Genotype×environment interaction (G×E)

flowering time

phenotypic plasticity

QTL-by-environment interaction (QEI)

quantitative trait locus (QTL)

strawberry

URI

https://oskar-bordeaux.fr/handle/20.500.12278/204106

DOI

http://dx.doi.org/10.1093/jxb/erae279/7700919

Projet Européen

BreedingValue project No. 101000747

Origine

Importé de hal

Unités de recherche

Biologie du Fruit & Pathologie (BFP) - UMR 1332