How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants?
Species' drought resistance is determined by a combination of multiple traits and their plastic response. However, a clear understanding of how these traits are coordinated and modulate plant responses to drought is still lacking. Here we used a water exclusion experiment on 20 Mediterranean wo...
| Autores: | , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:287845 |
| Acceso en línea: | https://ddd.uab.cat/record/287845 https://dx.doi.org/urn:doi:10.1016/j.agwat.2023.108613 |
| Access Level: | acceso abierto |
| Palabra clave: | Drought stress Leaf economic spectrum Leaf turgor loss point Physiological responses Trait coordination Water relations |
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How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants?Da Sois, Luca|||0000-0002-1170-7410Mencuccini, Maurizio|||0000-0003-0840-1477Castells, Eva|||0000-0001-7423-2742Sanchez-Martinez, Pablo|||0000-0002-0157-7800Martínez Vilalta, Jordi|||0000-0002-2332-7298Drought stressLeaf economic spectrumLeaf turgor loss pointPhysiological responsesTrait coordinationWater relationsSpecies' drought resistance is determined by a combination of multiple traits and their plastic response. However, a clear understanding of how these traits are coordinated and modulate plant responses to drought is still lacking. Here we used a water exclusion experiment on 20 Mediterranean woody species to evaluate a new framework to study plant drought responses, in which relatively constant functional traits modulate the physiological responses to a given drought exposure. In particular, we assessed how the response of stomatal conductance (Gs), leaf relative water content (RWC) and leaf water potential difference (ΔΨ) to leaf predawn water potential (Ψpd) were modulated by commonly used functional traits. The latter included hydraulic and water relations attributes such as turgor loss point in leaves (Ψtlp), vulnerability to xylem embolism in stems (Ψ50), hydraulic conductivity per unit sapwood (Ks), hydraulic conductivity per unit leaf area (Kl, hydraulic sufficiency) and Huber value (Hv), as well as specific leaf area (SLA) as a proxy for the leaf economics spectrum. Our results show that functional traits are highly coordinated, defining two main axes: the first related to drought tolerance and resource-use strategies and the second characterising the hydraulic sufficiency of leaves. These two axes, as well as many of the underlying functional traits, showed a significant interaction with Ψpd in explaining physiological responses to drought, thus modulating Gs, RWC, and ΔΨ responses. Drought-tolerant species showed a less stringent regulation of water use and leaf water potential but were more effective at regulating leaf RWC. Also, the leaf water potential at turgor loss (Ψtlp) emerged as an important trait orchestrating plant responses to drought. This study highlights that a clear separation between slow-varying traits (Ψtlp, Ψ50, Ks, Kl, Hv, SLA), physiological responses (Gs, RWC, ΔΨ) and tissue-level exposure to drought (Ψpd) improves our understanding of plant drought resistance strategies. 22024-01-0120242024-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/287845https://dx.doi.org/urn:doi:10.1016/j.agwat.2023.108613reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 CGL2017-89149-C2-1-Ropen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2878452026-06-06T12:50:31Z |
| dc.title.none.fl_str_mv |
How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants? |
| title |
How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants? |
| spellingShingle |
How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants? Da Sois, Luca|||0000-0002-1170-7410 Drought stress Leaf economic spectrum Leaf turgor loss point Physiological responses Trait coordination Water relations |
| title_short |
How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants? |
| title_full |
How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants? |
| title_fullStr |
How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants? |
| title_full_unstemmed |
How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants? |
| title_sort |
How are physiological responses to drought modulated by water relations and leaf economics' traits in woody plants? |
| dc.creator.none.fl_str_mv |
Da Sois, Luca|||0000-0002-1170-7410 Mencuccini, Maurizio|||0000-0003-0840-1477 Castells, Eva|||0000-0001-7423-2742 Sanchez-Martinez, Pablo|||0000-0002-0157-7800 Martínez Vilalta, Jordi|||0000-0002-2332-7298 |
| author |
Da Sois, Luca|||0000-0002-1170-7410 |
| author_facet |
Da Sois, Luca|||0000-0002-1170-7410 Mencuccini, Maurizio|||0000-0003-0840-1477 Castells, Eva|||0000-0001-7423-2742 Sanchez-Martinez, Pablo|||0000-0002-0157-7800 Martínez Vilalta, Jordi|||0000-0002-2332-7298 |
| author_role |
author |
| author2 |
Mencuccini, Maurizio|||0000-0003-0840-1477 Castells, Eva|||0000-0001-7423-2742 Sanchez-Martinez, Pablo|||0000-0002-0157-7800 Martínez Vilalta, Jordi|||0000-0002-2332-7298 |
| author2_role |
author author author author |
| dc.subject.none.fl_str_mv |
Drought stress Leaf economic spectrum Leaf turgor loss point Physiological responses Trait coordination Water relations |
| topic |
Drought stress Leaf economic spectrum Leaf turgor loss point Physiological responses Trait coordination Water relations |
| description |
Species' drought resistance is determined by a combination of multiple traits and their plastic response. However, a clear understanding of how these traits are coordinated and modulate plant responses to drought is still lacking. Here we used a water exclusion experiment on 20 Mediterranean woody species to evaluate a new framework to study plant drought responses, in which relatively constant functional traits modulate the physiological responses to a given drought exposure. In particular, we assessed how the response of stomatal conductance (Gs), leaf relative water content (RWC) and leaf water potential difference (ΔΨ) to leaf predawn water potential (Ψpd) were modulated by commonly used functional traits. The latter included hydraulic and water relations attributes such as turgor loss point in leaves (Ψtlp), vulnerability to xylem embolism in stems (Ψ50), hydraulic conductivity per unit sapwood (Ks), hydraulic conductivity per unit leaf area (Kl, hydraulic sufficiency) and Huber value (Hv), as well as specific leaf area (SLA) as a proxy for the leaf economics spectrum. Our results show that functional traits are highly coordinated, defining two main axes: the first related to drought tolerance and resource-use strategies and the second characterising the hydraulic sufficiency of leaves. These two axes, as well as many of the underlying functional traits, showed a significant interaction with Ψpd in explaining physiological responses to drought, thus modulating Gs, RWC, and ΔΨ responses. Drought-tolerant species showed a less stringent regulation of water use and leaf water potential but were more effective at regulating leaf RWC. Also, the leaf water potential at turgor loss (Ψtlp) emerged as an important trait orchestrating plant responses to drought. This study highlights that a clear separation between slow-varying traits (Ψtlp, Ψ50, Ks, Kl, Hv, SLA), physiological responses (Gs, RWC, ΔΨ) and tissue-level exposure to drought (Ψpd) improves our understanding of plant drought resistance strategies. |
| publishDate |
2024 |
| dc.date.none.fl_str_mv |
2 2024-01-01 2024 2024-01-01 |
| dc.type.none.fl_str_mv |
Article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://ddd.uab.cat/record/287845 https://dx.doi.org/urn:doi:10.1016/j.agwat.2023.108613 |
| url |
https://ddd.uab.cat/record/287845 https://dx.doi.org/urn:doi:10.1016/j.agwat.2023.108613 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CGL2017-89149-C2-1-R |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
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openAccess |
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application/pdf |
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reponame:Dipòsit Digital de Documents de la UAB instname:Universitat Autònoma de Barcelona |
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Universitat Autònoma de Barcelona |
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Dipòsit Digital de Documents de la UAB |
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Dipòsit Digital de Documents de la UAB |
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