Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensis

Summary The relevance of interspecific variation in the use of plant water sources has been recognized in drought-prone environments. By contrast, the characterization of intraspecific differences in water uptake patterns remains elusive, although preferential access to particular soil layers may be...

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Autores: Voltas Velasco, Jordi, Lucabaugh, D., Chambel, Maria Regina, Ferrio Díaz, Juan Pedro
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10459.1/64971
Acceso en línea:https://doi.org/10.1111/nph.13569
http://hdl.handle.net/10459.1/64971
Access Level:acceso abierto
Palabra clave:Adaptation
Drought
Mediterranean climate
Pinus halepensis (Aleppo pine)
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spelling Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensisVoltas Velasco, JordiLucabaugh, D.Chambel, Maria ReginaFerrio Díaz, Juan PedroAdaptationDroughtMediterranean climatePinus halepensis (Aleppo pine)Summary The relevance of interspecific variation in the use of plant water sources has been recognized in drought-prone environments. By contrast, the characterization of intraspecific differences in water uptake patterns remains elusive, although preferential access to particular soil layers may be an important adaptive response for species along aridity gradients. Stable water isotopes were analysed in soil and xylem samples of 56 populations of the drought-avoidant conifer Pinus halepensis grown in a common garden test. We found that most populations reverted to deep soil layers as the main plant water source during seasonal summer droughts. More specifically, we detected a clear geographical differentiation among populations in water uptake patterns even under relatively mild drought conditions (early autumn), with populations originating from more arid regions taking up more water from deep soil layers. However, the preferential access to deep soil water was largely independent of aboveground growth. Our findings highlight the high plasticity and adaptive relevance of the differential access to soil water pools among Aleppo pine populations. The observed ecotypic patterns point to the adaptive relevance of resource investment in deep roots as a strategy towards securing a source of water in dry environments for P. halepensisThis work was funded by the Spanish project FENOPIN (AGL2012-40151-C03-03). J.P.F. is supported by the Ram on y Cajal programme (RYC-2008-02050). An earlier version of this work was presented by D.L. to obtain an MSc degree in the Erasmus Mundus Programme MEDfOR. The authors acknowledge Mara Luc a and Pilar Sope~na for technical assistance and Javier Rodr ıguez and Marif e D ıaz for providing isotope data from the Red Espa~nola de Vigilancia de Is otopos en la Precipitaci on.Wiley2018201820152018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://doi.org/10.1111/nph.13569http://hdl.handle.net/10459.1/64971http://hdl.handle.net/10459.1/64971reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/grantAgreement/MINECO//AGL2012-40151-C03-03Versió postprint del document publicat a: https://doi.org/10.1111/nph.13569New Phytologist, 2015, vol. 208, núm. 4, p. 1031-1041(c) Voltas et al., 2015(c) New Phytologist Trust, 2015info:eu-repo/semantics/openAccessoai:recercat.cat:10459.1/649712026-05-29T05:05:01Z
dc.title.none.fl_str_mv Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensis
title Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensis
spellingShingle Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensis
Voltas Velasco, Jordi
Adaptation
Drought
Mediterranean climate
Pinus halepensis (Aleppo pine)
title_short Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensis
title_full Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensis
title_fullStr Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensis
title_full_unstemmed Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensis
title_sort Intraspecific variation in the use of water sources by the circum-Mediterranean conifer Pinus halepensis
dc.creator.none.fl_str_mv Voltas Velasco, Jordi
Lucabaugh, D.
Chambel, Maria Regina
Ferrio Díaz, Juan Pedro
author Voltas Velasco, Jordi
author_facet Voltas Velasco, Jordi
Lucabaugh, D.
Chambel, Maria Regina
Ferrio Díaz, Juan Pedro
author_role author
author2 Lucabaugh, D.
Chambel, Maria Regina
Ferrio Díaz, Juan Pedro
author2_role author
author
author
dc.subject.none.fl_str_mv Adaptation
Drought
Mediterranean climate
Pinus halepensis (Aleppo pine)
topic Adaptation
Drought
Mediterranean climate
Pinus halepensis (Aleppo pine)
description Summary The relevance of interspecific variation in the use of plant water sources has been recognized in drought-prone environments. By contrast, the characterization of intraspecific differences in water uptake patterns remains elusive, although preferential access to particular soil layers may be an important adaptive response for species along aridity gradients. Stable water isotopes were analysed in soil and xylem samples of 56 populations of the drought-avoidant conifer Pinus halepensis grown in a common garden test. We found that most populations reverted to deep soil layers as the main plant water source during seasonal summer droughts. More specifically, we detected a clear geographical differentiation among populations in water uptake patterns even under relatively mild drought conditions (early autumn), with populations originating from more arid regions taking up more water from deep soil layers. However, the preferential access to deep soil water was largely independent of aboveground growth. Our findings highlight the high plasticity and adaptive relevance of the differential access to soil water pools among Aleppo pine populations. The observed ecotypic patterns point to the adaptive relevance of resource investment in deep roots as a strategy towards securing a source of water in dry environments for P. halepensis
publishDate 2015
dc.date.none.fl_str_mv 2015
2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1111/nph.13569
http://hdl.handle.net/10459.1/64971
http://hdl.handle.net/10459.1/64971
url https://doi.org/10.1111/nph.13569
http://hdl.handle.net/10459.1/64971
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO//AGL2012-40151-C03-03
Versió postprint del document publicat a: https://doi.org/10.1111/nph.13569
New Phytologist, 2015, vol. 208, núm. 4, p. 1031-1041
dc.rights.none.fl_str_mv (c) Voltas et al., 2015
(c) New Phytologist Trust, 2015
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Voltas et al., 2015
(c) New Phytologist Trust, 2015
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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