Genotype determines Arbutus unedo L. physiological and metabolomic responses to drought and recovery
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Other documents of the author: Martins, João B. L.; Pétriacq, Pierre; Flandin, Amelie; Gomez-Cadenas, Aurelio; Monteiro, Pedro; Pinto, G.; Canhoto, Jorge
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comunitat-uji-handle2:10234/197672
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Title
Genotype determines Arbutus unedo L. physiological and metabolomic responses to drought and recoveryAuthor (s)
Date
2022Publisher
Frontiers MediaISSN
1664-462XBibliographic citation
Martins J, Pétriacq P, Flandin A, Gómez-Cadenas A, Monteiro P, Pinto G and Canhoto J (2022) Genotype determines Arbutus unedo L. physiological and metabolomic responses to drought and recovery. Front. Plant Sci. 13:1011542. doi: 10.3389/fpls.2022.1011542Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/publishedVersionSubject
Abstract
Strawberry 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 ... [+]
Strawberry 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. [-]
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Frontiers in Plant Science 13:1011542Funder Name
Foundation for Science and Technology (Portugal) | R&D Unit Center for Functional Ecology - Science for People and the Planet | CESAM - CENTRO DE ESTUDOS DO AMBIENTE E DO MAR | Fundaçao para a Ciencia e a Tecnologia - FCT | European Fund for Regional Development (ERDF) | MetaboHUB | PHENOME
Project code
SFRH/BD/122478/2016 | UIDB/04004/2020 | UID/50017/2020 | UIDB/50017/2020 | SFRH/BD/143879/2019 | CENTRO-01-0145-FEDER-000007 | CENTRO-08-5864-FSE-000031 | CENTRO-01-0145-FEDER-000020 | ANR-11-INBS-0010 | ANR-11-INBS-0012
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Except where otherwise noted, this item's license is described as © 2022 Martins, Pétriacq, Flandin, Gómez-Cadenas, Monteiro, Pinto and Canhoto. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.