Dual effect of the presence of fruits on leaf gas exchange and water relations of olive trees
The presence of fruits provokes significant modifications in plant water relations and leaf gas exchange. The underlying processes driving these modifications are still uncertain and likely depend on the water deficit level. Our objective was to explain and track the modification of leaf-water relat...
| Autores: | , , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2023 |
| País: | España |
| Recursos: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/162658 |
| Acesso em linha: | https://hdl.handle.net/11441/162658 https://doi.org/10.1093/treephys/tpac123 |
| Access Level: | acceso abierto |
| Palavra-chave: | Non-structural carbohydrates Leaf turgor Leaf osmotic potential Water stress Fruit load Stomatal conductance |
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Dual effect of the presence of fruits on leaf gas exchange and water relations of olive treesPérez Arcoiza, AdriánDíaz Espejo, AntonioFernández Torres, RutPérez Romero, Luis FelipeHernández Santana, VirginiaNon-structural carbohydratesLeaf turgorLeaf osmotic potentialWater stressFruit loadStomatal conductanceThe presence of fruits provokes significant modifications in plant water relations and leaf gas exchange. The underlying processes driving these modifications are still uncertain and likely depend on the water deficit level. Our objective was to explain and track the modification of leaf-water relations by the presence of fruits and water deficit. With this aim, net photosynthesis rate (AN), stomatal conductance (gs), leaf osmotic potential (Ψπ), leaf soluble sugars and daily changes in a variable related to leaf turgor (leaf patch pressure) were measured in olive trees with and without fruits at the same time, under well-watered (WW) and water stress (WS) conditions. Leaf gas exchange was increased by the presence of fruits, this effect being observed mainly in WW trees, likely because under severe water stress, the dominant process is the response of the plant to the water stress and the presence of fruits has less impact on the leaf gas exchange. Ψπ was also higher for WW trees with fruits than for WW trees without fruits. Moreover, leaves from trees without fruits presented higher concentrations of soluble sugars and starch than leaves from trees with fruits for both WW and WS, these differences matching those found in Ψπ. Thus, the sugar accumulation would have had a dual effect because on one hand, it decreased Ψπ, and on the other hand, it would have downregulated AN, and finally gs in WW trees. Interestingly, the modification of Ψπ by the presence of fruits affected turgor in WW trees, the change in which can be identified with leaf turgor sensors. We conclude that plant water relationships and leaf gas exchange are modified by the presence of fruits through their effect on the export of sugars from leaves to fruits. The possibility of automatically identifying the onset of sugar demand by the fruit through the use of sensors, in addition to the water stress produced by soil water deficit and atmosphere drought, could be of great help for fruit orchard management in the future.Ministerio de Ciencia e Innovación AGL2015-71585-ROxford University PressQuímica AnalíticaAgronomíaMinisterio de Ciencia e Innovación (MICIN). España2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/162658https://doi.org/10.1093/treephys/tpac123reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésTree Physiology, 43 (2), 277-287.AGL2015-71585-Rhttps://doi.org/10.1093/treephys/tpac123info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1626582026-06-17T12:51:07Z |
| dc.title.none.fl_str_mv |
Dual effect of the presence of fruits on leaf gas exchange and water relations of olive trees |
| title |
Dual effect of the presence of fruits on leaf gas exchange and water relations of olive trees |
| spellingShingle |
Dual effect of the presence of fruits on leaf gas exchange and water relations of olive trees Pérez Arcoiza, Adrián Non-structural carbohydrates Leaf turgor Leaf osmotic potential Water stress Fruit load Stomatal conductance |
| title_short |
Dual effect of the presence of fruits on leaf gas exchange and water relations of olive trees |
| title_full |
Dual effect of the presence of fruits on leaf gas exchange and water relations of olive trees |
| title_fullStr |
Dual effect of the presence of fruits on leaf gas exchange and water relations of olive trees |
| title_full_unstemmed |
Dual effect of the presence of fruits on leaf gas exchange and water relations of olive trees |
| title_sort |
Dual effect of the presence of fruits on leaf gas exchange and water relations of olive trees |
| dc.creator.none.fl_str_mv |
Pérez Arcoiza, Adrián Díaz Espejo, Antonio Fernández Torres, Rut Pérez Romero, Luis Felipe Hernández Santana, Virginia |
| author |
Pérez Arcoiza, Adrián |
| author_facet |
Pérez Arcoiza, Adrián Díaz Espejo, Antonio Fernández Torres, Rut Pérez Romero, Luis Felipe Hernández Santana, Virginia |
| author_role |
author |
| author2 |
Díaz Espejo, Antonio Fernández Torres, Rut Pérez Romero, Luis Felipe Hernández Santana, Virginia |
| author2_role |
author author author author |
| dc.contributor.none.fl_str_mv |
Química Analítica Agronomía Ministerio de Ciencia e Innovación (MICIN). España |
| dc.subject.none.fl_str_mv |
Non-structural carbohydrates Leaf turgor Leaf osmotic potential Water stress Fruit load Stomatal conductance |
| topic |
Non-structural carbohydrates Leaf turgor Leaf osmotic potential Water stress Fruit load Stomatal conductance |
| description |
The presence of fruits provokes significant modifications in plant water relations and leaf gas exchange. The underlying processes driving these modifications are still uncertain and likely depend on the water deficit level. Our objective was to explain and track the modification of leaf-water relations by the presence of fruits and water deficit. With this aim, net photosynthesis rate (AN), stomatal conductance (gs), leaf osmotic potential (Ψπ), leaf soluble sugars and daily changes in a variable related to leaf turgor (leaf patch pressure) were measured in olive trees with and without fruits at the same time, under well-watered (WW) and water stress (WS) conditions. Leaf gas exchange was increased by the presence of fruits, this effect being observed mainly in WW trees, likely because under severe water stress, the dominant process is the response of the plant to the water stress and the presence of fruits has less impact on the leaf gas exchange. Ψπ was also higher for WW trees with fruits than for WW trees without fruits. Moreover, leaves from trees without fruits presented higher concentrations of soluble sugars and starch than leaves from trees with fruits for both WW and WS, these differences matching those found in Ψπ. Thus, the sugar accumulation would have had a dual effect because on one hand, it decreased Ψπ, and on the other hand, it would have downregulated AN, and finally gs in WW trees. Interestingly, the modification of Ψπ by the presence of fruits affected turgor in WW trees, the change in which can be identified with leaf turgor sensors. We conclude that plant water relationships and leaf gas exchange are modified by the presence of fruits through their effect on the export of sugars from leaves to fruits. The possibility of automatically identifying the onset of sugar demand by the fruit through the use of sensors, in addition to the water stress produced by soil water deficit and atmosphere drought, could be of great help for fruit orchard management in the future. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023 |
| 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://hdl.handle.net/11441/162658 https://doi.org/10.1093/treephys/tpac123 |
| url |
https://hdl.handle.net/11441/162658 https://doi.org/10.1093/treephys/tpac123 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Tree Physiology, 43 (2), 277-287. AGL2015-71585-R https://doi.org/10.1093/treephys/tpac123 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
Oxford University Press |
| publisher.none.fl_str_mv |
Oxford University Press |
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reponame:idUS. Depósito de Investigación de la Universidad de Sevilla instname:Universidad de Sevilla (US) |
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Universidad de Sevilla (US) |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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1869408135724138496 |
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15.81155 |