Sap flow responses to warming and fruit load in young olive trees
- Autores
- Miserere, Andrea; Searles, Peter Stoughton; Manchó, Guadalupe; Maseda, Pablo Horacio; Rousseaux, María Cecilia
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Fil: Miserere, Andrea. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina.
Fil: Searles, Peter Stoughton. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina.
Fil: Manchó, Guadalupe. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Fil: Maseda, Pablo Horacio. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Fil: Rousseaux, María Cecilia. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina.
Global warming will likely lead to temperature increases in many regions of South America where temperatures are already considered to be high for olive production. Thus, experimental studies are needed to assess how water use in olive trees may be affected by global warming. The objectives of this study were to (i) evaluate the response of olive tree sap flow, stomatal conductance, and xylem anatomy to elevated temperature and (ii) determine whether fruit load may affect the temperature responses. A warming experiment using well-irrigated olive trees (cv. Arbequina) in open-top chambers (OTCs) with two temperature levels was performed from fruit set to the end of fruit growth in two seasons. Temperature levels were a near ambient control (T0) and a treatment 4°C above the control (T+). Trees were in the chambers for either one (2015–2016) or two seasons (2014–2015, 2015–2016) and were evaluated only in the second season when all trees were 3 years old. Whole-tree sap flow on leaf area basis, stomatal conductance, and aspects of xylem anatomy were measured. Sap flow was slightly higher in T+ than T0 trees heated for one season early in fruit development (summer) likely due to the elevated temperature and increase in vapor pressure deficit. Later in fruit development (fall), sap flow was substantially higher in the T+ trees heated for one season. Total vessel number per shoot was greater in the T+ than the T0 trees at this time due to more small-diameter vessels in the T+ trees, but this did not appear to explain the greater sap flow. The T+ trees that were heated for two seasons had less fruit load than the T0 trees due to little flowering. In contrast to trees heated for one season, sap flow was less in T+ than controls late in fruit development the second season, which was likely related to lower fruit load. An independent experiment using untreated trees confirmed that sap flow decreases when fruit load is below a threshold value. The results emphasize that multiple, interacting factors should be considered when predicting warming effects on water use in olive orchards.
tbls., grafs. - Fuente
- Frontiers in Plant Science
Vol.10
art.1199
http://www.frontiersin.org - Materia
-
FRUIT LOAD
GLOBAL WARMING
HEATING
OPEN-TOP CHAMBER
SAP FLOW
XYLEM ANATOMY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- acceso abierto
- Repositorio
- Institución
- Universidad de Buenos Aires. Facultad de Agronomía
- OAI Identificador
- snrd:2019miserereandrea
Ver los metadatos del registro completo
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Sap flow responses to warming and fruit load in young olive treesMiserere, AndreaSearles, Peter StoughtonManchó, GuadalupeMaseda, Pablo HoracioRousseaux, María CeciliaFRUIT LOADGLOBAL WARMINGHEATINGOPEN-TOP CHAMBERSAP FLOWXYLEM ANATOMYFil: Miserere, Andrea. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina.Fil: Searles, Peter Stoughton. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina.Fil: Manchó, Guadalupe. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Fil: Maseda, Pablo Horacio. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Fil: Rousseaux, María Cecilia. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina.Global warming will likely lead to temperature increases in many regions of South America where temperatures are already considered to be high for olive production. Thus, experimental studies are needed to assess how water use in olive trees may be affected by global warming. The objectives of this study were to (i) evaluate the response of olive tree sap flow, stomatal conductance, and xylem anatomy to elevated temperature and (ii) determine whether fruit load may affect the temperature responses. A warming experiment using well-irrigated olive trees (cv. Arbequina) in open-top chambers (OTCs) with two temperature levels was performed from fruit set to the end of fruit growth in two seasons. Temperature levels were a near ambient control (T0) and a treatment 4°C above the control (T+). Trees were in the chambers for either one (2015–2016) or two seasons (2014–2015, 2015–2016) and were evaluated only in the second season when all trees were 3 years old. Whole-tree sap flow on leaf area basis, stomatal conductance, and aspects of xylem anatomy were measured. Sap flow was slightly higher in T+ than T0 trees heated for one season early in fruit development (summer) likely due to the elevated temperature and increase in vapor pressure deficit. Later in fruit development (fall), sap flow was substantially higher in the T+ trees heated for one season. Total vessel number per shoot was greater in the T+ than the T0 trees at this time due to more small-diameter vessels in the T+ trees, but this did not appear to explain the greater sap flow. The T+ trees that were heated for two seasons had less fruit load than the T0 trees due to little flowering. In contrast to trees heated for one season, sap flow was less in T+ than controls late in fruit development the second season, which was likely related to lower fruit load. An independent experiment using untreated trees confirmed that sap flow decreases when fruit load is below a threshold value. The results emphasize that multiple, interacting factors should be considered when predicting warming effects on water use in olive orchards.tbls., grafs.2019articleinfo:eu-repo/semantics/articlepublishedVersioninfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfdoi:10.3389/fpls.2019.01199http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2019miserereandreaFrontiers in Plant ScienceVol.10art.1199http://www.frontiersin.orgreponame:FAUBA Digital (UBA-FAUBA)instname:Universidad de Buenos Aires. Facultad de Agronomíaenginfo:eu-repo/semantics/openAccessopenAccesshttp://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section42025-09-29T13:42:05Zsnrd:2019miserereandreainstacron:UBA-FAUBAInstitucionalhttp://ri.agro.uba.ar/Universidad públicaNo correspondehttp://ri.agro.uba.ar/greenstone3/oaiserver?verb=ListSetsmartino@agro.uba.ar;berasa@agro.uba.ar ArgentinaNo correspondeNo correspondeNo correspondeopendoar:27292025-09-29 13:42:06.729FAUBA Digital (UBA-FAUBA) - Universidad de Buenos Aires. Facultad de Agronomíafalse |
dc.title.none.fl_str_mv |
Sap flow responses to warming and fruit load in young olive trees |
title |
Sap flow responses to warming and fruit load in young olive trees |
spellingShingle |
Sap flow responses to warming and fruit load in young olive trees Miserere, Andrea FRUIT LOAD GLOBAL WARMING HEATING OPEN-TOP CHAMBER SAP FLOW XYLEM ANATOMY |
title_short |
Sap flow responses to warming and fruit load in young olive trees |
title_full |
Sap flow responses to warming and fruit load in young olive trees |
title_fullStr |
Sap flow responses to warming and fruit load in young olive trees |
title_full_unstemmed |
Sap flow responses to warming and fruit load in young olive trees |
title_sort |
Sap flow responses to warming and fruit load in young olive trees |
dc.creator.none.fl_str_mv |
Miserere, Andrea Searles, Peter Stoughton Manchó, Guadalupe Maseda, Pablo Horacio Rousseaux, María Cecilia |
author |
Miserere, Andrea |
author_facet |
Miserere, Andrea Searles, Peter Stoughton Manchó, Guadalupe Maseda, Pablo Horacio Rousseaux, María Cecilia |
author_role |
author |
author2 |
Searles, Peter Stoughton Manchó, Guadalupe Maseda, Pablo Horacio Rousseaux, María Cecilia |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
FRUIT LOAD GLOBAL WARMING HEATING OPEN-TOP CHAMBER SAP FLOW XYLEM ANATOMY |
topic |
FRUIT LOAD GLOBAL WARMING HEATING OPEN-TOP CHAMBER SAP FLOW XYLEM ANATOMY |
dc.description.none.fl_txt_mv |
Fil: Miserere, Andrea. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina. Fil: Searles, Peter Stoughton. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina. Fil: Manchó, Guadalupe. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. Fil: Maseda, Pablo Horacio. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. Fil: Rousseaux, María Cecilia. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina. Global warming will likely lead to temperature increases in many regions of South America where temperatures are already considered to be high for olive production. Thus, experimental studies are needed to assess how water use in olive trees may be affected by global warming. The objectives of this study were to (i) evaluate the response of olive tree sap flow, stomatal conductance, and xylem anatomy to elevated temperature and (ii) determine whether fruit load may affect the temperature responses. A warming experiment using well-irrigated olive trees (cv. Arbequina) in open-top chambers (OTCs) with two temperature levels was performed from fruit set to the end of fruit growth in two seasons. Temperature levels were a near ambient control (T0) and a treatment 4°C above the control (T+). Trees were in the chambers for either one (2015–2016) or two seasons (2014–2015, 2015–2016) and were evaluated only in the second season when all trees were 3 years old. Whole-tree sap flow on leaf area basis, stomatal conductance, and aspects of xylem anatomy were measured. Sap flow was slightly higher in T+ than T0 trees heated for one season early in fruit development (summer) likely due to the elevated temperature and increase in vapor pressure deficit. Later in fruit development (fall), sap flow was substantially higher in the T+ trees heated for one season. Total vessel number per shoot was greater in the T+ than the T0 trees at this time due to more small-diameter vessels in the T+ trees, but this did not appear to explain the greater sap flow. The T+ trees that were heated for two seasons had less fruit load than the T0 trees due to little flowering. In contrast to trees heated for one season, sap flow was less in T+ than controls late in fruit development the second season, which was likely related to lower fruit load. An independent experiment using untreated trees confirmed that sap flow decreases when fruit load is below a threshold value. The results emphasize that multiple, interacting factors should be considered when predicting warming effects on water use in olive orchards. tbls., grafs. |
description |
Fil: Miserere, Andrea. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-Provincia de La Rioja-UNLaR-SEGEMAR-UNCa-CONICET). La Rioja, Argentina. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 |
dc.type.none.fl_str_mv |
article info:eu-repo/semantics/article publishedVersion 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 |
doi:10.3389/fpls.2019.01199 http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2019miserereandrea |
identifier_str_mv |
doi:10.3389/fpls.2019.01199 |
url |
http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2019miserereandrea |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess openAccess http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4 |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
openAccess http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4 |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
Frontiers in Plant Science Vol.10 art.1199 http://www.frontiersin.org reponame:FAUBA Digital (UBA-FAUBA) instname:Universidad de Buenos Aires. Facultad de Agronomía |
reponame_str |
FAUBA Digital (UBA-FAUBA) |
collection |
FAUBA Digital (UBA-FAUBA) |
instname_str |
Universidad de Buenos Aires. Facultad de Agronomía |
repository.name.fl_str_mv |
FAUBA Digital (UBA-FAUBA) - Universidad de Buenos Aires. Facultad de Agronomía |
repository.mail.fl_str_mv |
martino@agro.uba.ar;berasa@agro.uba.ar |
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13.070432 |