Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive trees

Autores
Iglesias, Maria Agustina; Rousseaux, María Cecilia; Aguero Alcaras, Luis Martin; Searles, Peter Stoughton
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Water scarcity is a major constraint for olive cultivation in hot, arid regions and is likely to be exacerbated with climate change. Thus, the objective of this study was to evaluate the combined effects of a moderate deficit irrigation (50%) and warming (3–4 °C) on whole-tree daily sap flow, leaf morphological traits, and stem xylem vessel characteristics in young olive trees (cv. Coratina). Four irrigation × temperature combinations were applied to three-year-old trees in open top chambers during the late winter and spring of 2019. The combinations included: 100% irrigation with either a near-ambient temperature control (100 Tc) or a warming treatment (100 T + ) and 50% irrigation with either a near-ambient temperature control (50 Tc) or a warming treatment (50 T + ). Trees receiving the warming treatment (T + ) had a higher daily sap flow on a leaf area basis than those at the control temperature (Tc) in each of three sap flow periods. No difference in daily sap flow between T + and Tc on a per tree basis (i.e., not adjusted for leaf area) was observed in the last two sap flow periods likely due to a lower leaf area per tree with warming. No significant reductions in sap flow were apparent for the moderate deficit irrigation under the experimental conditions. However, stem water potential and stomatal conductance were lower under the deficit irrigation, which indicates that some degree of water stress did occur. New leaves were smaller under both deficit irrigation and warming, and stomatal density decreased with warming. Stem xylem vessel numbers was greater in T + in one intermediate diameter size class compared to Tc, while deficit irrigation increased the number of very narrow vessels. These results suggest that warming increases tree water use over the short term, but that changes in leaf area due to warming over the longer-term may ameliorate such increases. Future studies with different levels of warming and greater deficit irrigation seem warranted to further assess the implications for water management.
EEA Chilecito
Fil: Iglesias, Maria Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Iglesias, Maria Agustina. Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Iglesias, Maria Agustina. Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de la Rioja; Argentina
Fil: Iglesias, Maria Agustina. Secretaria de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Iglesias, Maria Agustina. Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de la Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Secretaria de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Universidad Nacional de La Rioja. Departamento de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Aguero Alcaras, Luis Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chilecito. Agencia de Extensión Rural Aimogasta; Argentina
Fil: Searles, Peter Stoughton. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Searles, Peter Stoughton. Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Searles, Peter Stoughton. Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de la Rioja; Argentina
Fil: Searles, Peter Stoughton. Secretaria de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Searles, Peter Stoughton. Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fuente
Agricultural Water Management 333 : 110628. (August 2026)
Materia
Olea europaea
Global Warming
Leaf Area
Winter
Spring
Water Scarcity
Deficit Irrigation
Calentamiento Global
Superficie Foliar
Invierno
Primavera
Escasez de Agua
Irrigación Deficitaria
Olivo
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/27074
Acceder
id INTADig_cf1185a2b0320ca61b67482b168446a2
oai_identifier_str oai:localhost:20.500.12123/27074
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive treesIglesias, Maria AgustinaRousseaux, María CeciliaAguero Alcaras, Luis MartinSearles, Peter StoughtonOlea europaeaGlobal WarmingLeaf AreaWinterSpringWater ScarcityDeficit IrrigationCalentamiento GlobalSuperficie FoliarInviernoPrimaveraEscasez de AguaIrrigación DeficitariaOlivoWater scarcity is a major constraint for olive cultivation in hot, arid regions and is likely to be exacerbated with climate change. Thus, the objective of this study was to evaluate the combined effects of a moderate deficit irrigation (50%) and warming (3–4 °C) on whole-tree daily sap flow, leaf morphological traits, and stem xylem vessel characteristics in young olive trees (cv. Coratina). Four irrigation × temperature combinations were applied to three-year-old trees in open top chambers during the late winter and spring of 2019. The combinations included: 100% irrigation with either a near-ambient temperature control (100 Tc) or a warming treatment (100 T + ) and 50% irrigation with either a near-ambient temperature control (50 Tc) or a warming treatment (50 T + ). Trees receiving the warming treatment (T + ) had a higher daily sap flow on a leaf area basis than those at the control temperature (Tc) in each of three sap flow periods. No difference in daily sap flow between T + and Tc on a per tree basis (i.e., not adjusted for leaf area) was observed in the last two sap flow periods likely due to a lower leaf area per tree with warming. No significant reductions in sap flow were apparent for the moderate deficit irrigation under the experimental conditions. However, stem water potential and stomatal conductance were lower under the deficit irrigation, which indicates that some degree of water stress did occur. New leaves were smaller under both deficit irrigation and warming, and stomatal density decreased with warming. Stem xylem vessel numbers was greater in T + in one intermediate diameter size class compared to Tc, while deficit irrigation increased the number of very narrow vessels. These results suggest that warming increases tree water use over the short term, but that changes in leaf area due to warming over the longer-term may ameliorate such increases. Future studies with different levels of warming and greater deficit irrigation seem warranted to further assess the implications for water management.EEA ChilecitoFil: Iglesias, Maria Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Iglesias, Maria Agustina. Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Iglesias, Maria Agustina. Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de la Rioja; ArgentinaFil: Iglesias, Maria Agustina. Secretaria de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Iglesias, Maria Agustina. Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Rousseaux, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Rousseaux, Maria Cecilia. Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Rousseaux, Maria Cecilia. Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de la Rioja; ArgentinaFil: Rousseaux, Maria Cecilia. Secretaria de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Rousseaux, Maria Cecilia. Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Rousseaux, Maria Cecilia. Universidad Nacional de La Rioja. Departamento de Ciencias Exactas, Físicas y Naturales; ArgentinaFil: Aguero Alcaras, Luis Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chilecito. Agencia de Extensión Rural Aimogasta; ArgentinaFil: Searles, Peter Stoughton. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Searles, Peter Stoughton. Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Searles, Peter Stoughton. Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de la Rioja; ArgentinaFil: Searles, Peter Stoughton. Secretaria de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Searles, Peter Stoughton. Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaElsevier2026-07-20T14:08:23Z2026-07-20T14:08:23Z2026-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/27074https://www.sciencedirect.com/science/article/pii/S03783774260050930378-37741873-2283https://doi.org/10.1016/j.agwat.2026.110628Agricultural Water Management 333 : 110628. (August 2026)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2026-09-24T11:43:29Zoai:localhost:20.500.12123/27074instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-09-24 11:43:30.397INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive trees
title Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive trees
spellingShingle Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive trees
Iglesias, Maria Agustina
Olea europaea
Global Warming
Leaf Area
Winter
Spring
Water Scarcity
Deficit Irrigation
Calentamiento Global
Superficie Foliar
Invierno
Primavera
Escasez de Agua
Irrigación Deficitaria
Olivo
title_short Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive trees
title_full Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive trees
title_fullStr Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive trees
title_full_unstemmed Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive trees
title_sort Daily sap flow, leaf morphology, and stem xylem characteristics under deficit irrigation and warming during the late winter and spring in young olive trees
dc.creator.none.fl_str_mv Iglesias, Maria Agustina
Rousseaux, María Cecilia
Aguero Alcaras, Luis Martin
Searles, Peter Stoughton
author Iglesias, Maria Agustina
author_facet Iglesias, Maria Agustina
Rousseaux, María Cecilia
Aguero Alcaras, Luis Martin
Searles, Peter Stoughton
author_role author
author2 Rousseaux, María Cecilia
Aguero Alcaras, Luis Martin
Searles, Peter Stoughton
author2_role author
author
author
dc.subject.none.fl_str_mv Olea europaea
Global Warming
Leaf Area
Winter
Spring
Water Scarcity
Deficit Irrigation
Calentamiento Global
Superficie Foliar
Invierno
Primavera
Escasez de Agua
Irrigación Deficitaria
Olivo
topic Olea europaea
Global Warming
Leaf Area
Winter
Spring
Water Scarcity
Deficit Irrigation
Calentamiento Global
Superficie Foliar
Invierno
Primavera
Escasez de Agua
Irrigación Deficitaria
Olivo
dc.description.none.fl_txt_mv Water scarcity is a major constraint for olive cultivation in hot, arid regions and is likely to be exacerbated with climate change. Thus, the objective of this study was to evaluate the combined effects of a moderate deficit irrigation (50%) and warming (3–4 °C) on whole-tree daily sap flow, leaf morphological traits, and stem xylem vessel characteristics in young olive trees (cv. Coratina). Four irrigation × temperature combinations were applied to three-year-old trees in open top chambers during the late winter and spring of 2019. The combinations included: 100% irrigation with either a near-ambient temperature control (100 Tc) or a warming treatment (100 T + ) and 50% irrigation with either a near-ambient temperature control (50 Tc) or a warming treatment (50 T + ). Trees receiving the warming treatment (T + ) had a higher daily sap flow on a leaf area basis than those at the control temperature (Tc) in each of three sap flow periods. No difference in daily sap flow between T + and Tc on a per tree basis (i.e., not adjusted for leaf area) was observed in the last two sap flow periods likely due to a lower leaf area per tree with warming. No significant reductions in sap flow were apparent for the moderate deficit irrigation under the experimental conditions. However, stem water potential and stomatal conductance were lower under the deficit irrigation, which indicates that some degree of water stress did occur. New leaves were smaller under both deficit irrigation and warming, and stomatal density decreased with warming. Stem xylem vessel numbers was greater in T + in one intermediate diameter size class compared to Tc, while deficit irrigation increased the number of very narrow vessels. These results suggest that warming increases tree water use over the short term, but that changes in leaf area due to warming over the longer-term may ameliorate such increases. Future studies with different levels of warming and greater deficit irrigation seem warranted to further assess the implications for water management.
EEA Chilecito
Fil: Iglesias, Maria Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Iglesias, Maria Agustina. Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Iglesias, Maria Agustina. Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de la Rioja; Argentina
Fil: Iglesias, Maria Agustina. Secretaria de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Iglesias, Maria Agustina. Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de la Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Secretaria de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Rousseaux, Maria Cecilia. Universidad Nacional de La Rioja. Departamento de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Aguero Alcaras, Luis Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chilecito. Agencia de Extensión Rural Aimogasta; Argentina
Fil: Searles, Peter Stoughton. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Searles, Peter Stoughton. Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Searles, Peter Stoughton. Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de la Rioja; Argentina
Fil: Searles, Peter Stoughton. Secretaria de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Searles, Peter Stoughton. Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
description Water scarcity is a major constraint for olive cultivation in hot, arid regions and is likely to be exacerbated with climate change. Thus, the objective of this study was to evaluate the combined effects of a moderate deficit irrigation (50%) and warming (3–4 °C) on whole-tree daily sap flow, leaf morphological traits, and stem xylem vessel characteristics in young olive trees (cv. Coratina). Four irrigation × temperature combinations were applied to three-year-old trees in open top chambers during the late winter and spring of 2019. The combinations included: 100% irrigation with either a near-ambient temperature control (100 Tc) or a warming treatment (100 T + ) and 50% irrigation with either a near-ambient temperature control (50 Tc) or a warming treatment (50 T + ). Trees receiving the warming treatment (T + ) had a higher daily sap flow on a leaf area basis than those at the control temperature (Tc) in each of three sap flow periods. No difference in daily sap flow between T + and Tc on a per tree basis (i.e., not adjusted for leaf area) was observed in the last two sap flow periods likely due to a lower leaf area per tree with warming. No significant reductions in sap flow were apparent for the moderate deficit irrigation under the experimental conditions. However, stem water potential and stomatal conductance were lower under the deficit irrigation, which indicates that some degree of water stress did occur. New leaves were smaller under both deficit irrigation and warming, and stomatal density decreased with warming. Stem xylem vessel numbers was greater in T + in one intermediate diameter size class compared to Tc, while deficit irrigation increased the number of very narrow vessels. These results suggest that warming increases tree water use over the short term, but that changes in leaf area due to warming over the longer-term may ameliorate such increases. Future studies with different levels of warming and greater deficit irrigation seem warranted to further assess the implications for water management.
publishDate 2026
dc.date.none.fl_str_mv 2026-07-20T14:08:23Z
2026-07-20T14:08:23Z
2026-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/27074
https://www.sciencedirect.com/science/article/pii/S0378377426005093
0378-3774
1873-2283
https://doi.org/10.1016/j.agwat.2026.110628
url http://hdl.handle.net/20.500.12123/27074
https://www.sciencedirect.com/science/article/pii/S0378377426005093
https://doi.org/10.1016/j.agwat.2026.110628
identifier_str_mv 0378-3774
1873-2283
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Agricultural Water Management 333 : 110628. (August 2026)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
_version_ 1877227351185555456
score 12.733355

Publicaciones similares