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Genotype determines Arbutus unedo L. physiological and metabolomic responses to drought and recovery

hal.structure.identifierCentre for Functional ecology
dc.contributor.authorMARTINS, João
hal.structure.identifierBiologie du fruit et pathologie [BFP]
hal.structure.identifierPlateforme Bordeaux Metabolome
dc.contributor.authorPÉTRIACQ, Pierre
hal.structure.identifierBiologie du fruit et pathologie [BFP]
hal.structure.identifierPlateforme Bordeaux Metabolome
dc.contributor.authorFLANDIN, Amélie
hal.structure.identifierDepartamento de Ciencias Agrarias y del Medio Natural, Area de Fisiologia Vegetal
dc.contributor.authorGÓMEZ-CADENAS, Aurelio
hal.structure.identifierCentre for Environmental and Marine Studies [Aveiro] [CESAM]
dc.contributor.authorMONTEIRO, Pedro
hal.structure.identifierCentre for Environmental and Marine Studies [Aveiro] [CESAM]
dc.contributor.authorPINTO, Glória
hal.structure.identifierCentre for Functional ecology
dc.contributor.authorCANHOTO, Jorge
dc.date.issued2022-11-22
dc.identifier.issn1664-462X
dc.description.abstractEnStrawberry tree (Arbutus unedo) is a small resilient species with a circum-Mediterranean distribution, high ecological relevance in southern European forests and with several economical applications. As most orchards are usually installed on marginal lands where plants usually face severe drought, selecting plants that can better cope with water restriction is critical, and a better understanding of the tolerance mechanisms is required. Strawberry tree plants under drought follow a typical isohydric strategy, by limiting transpiration through stomata closure. However, the contribution of genotype and its bio-geographic origin on plant performance needs clarification, as well as the involvement of a specific metabolic reactions associated with the mechanical response. To test this hypothesis, several eco-physiological and biochemical parameters were assessed on different genotypes, and the metabolic profiles studied, including important stress-related phytohormones, on plants under different water regimes (plants watered to 70% and 18% field capacity) and a recovery assay. A contrasting drought tolerance was found in plants from different genotypes, associated with physiological and metabolic responses. Metabolomics revealed more than 500 metabolic features were differentially accumulated, including abscisic and salicylic acids, for the genotype with better performance under drought (A4). This genotype also recovered faster when the imposed stress was interrupted, thus indicating the relevance of metabolic adaptation under water deficit conditions. By correlating carbon assimilation with identified metabolites, some proved to be satisfactory predictors of plant performance under drought and might be used for marker assisted breeding. Therefore, our study proves the importance of genotype as a major selection criterion of resistant plants to drought and provides empirical knowledge of the metabolic response involved. We also hypothesized the involvement of phenolics on response mechanisms under drought, which is worth to be explored to shed light on the metabolic pathways involved in plant response to water stress.
dc.description.sponsorshipDéveloppement d'une infrastructure française distribuée pour la métabolomique dédiée à l'innovation - ANR-11-INBS-0010
dc.description.sponsorshipCentre français de phénomique végétale - ANR-11-INBS-0012
dc.language.isoen
dc.publisherFrontiers
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.endrought
dc.subject.enphenolic compounds
dc.subject.enmicropropagation
dc.subject.enplant hormones
dc.subject.enstrawberry tree
dc.title.enGenotype determines Arbutus unedo L. physiological and metabolomic responses to drought and recovery
dc.typeArticle de revue
dc.identifier.doi10.3389/fpls.2022.1011542
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalFrontiers in Plant Science
bordeaux.page1011542
bordeaux.volume13
bordeaux.peerReviewedoui
hal.identifierhal-03914288
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03914288v1
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