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The Olive Tree Under Water Stress: Fitting the Pieces of Response Mechanisms in the Crop Performance Puzzle

AutorDíaz-Espejo, Antonio ; Fernández Luque, José Enrique ; Torres Ruiz, José Manuel ; Rodríguez Domínguez, Celia M. ; Pérez Martín, Alfonso ; Hernández Santana, V.
Palabras claveABA
Deficit irrigation
Photosynthesis limitation
Plant ecophysiology
Plant hydraulic
Process-based models
Stomatal conductance regulation
Water stress
Fecha de publicación21-ene-2018
EditorAcademic Press
CitaciónWater Scarcity and Sustainable Agriculture in Semiarid Environment Tools, Strategies, and Challenges for Woody Crops 18: 439–479 (2018)
ResumenOlive trees are one of the most representative horticultural crops of the Mediterranean environments. Its plethora of physiological mechanisms of response to water stress have made of this species one of the most studied ones in this respect in the literature in the last two decades. Also, despite being exalted as one of the stereotypes of dry-farming crop, olive trees' generous response to irrigation has demanded a large amount of work on how to manage them in the very water scarce environment where they are grown. In this chapter we will not do another review of the physiological mechanisms of response of olive trees to water stress. Nonetheless, we intend to integrate all of them, with the help of mechanistic models, to unravel which are the consequences, trade-offs, and limits of the implementation of these mechanisms for the plant in response to drought events. Once this is achieved, we will answer questions such as: Why can olive trees afford to drop their water potential by osmotic adjustment while other crops like grapevine cannot? What are the causes behind the change in the relationship between stomatal conductance and leaf water potential during acclimation to water stress? What is the role of abscisic acid (ABA) in the regulation of stomatal conductance in response to water stress? And, in light of these findings, what is the most appropriate physiological variable to assess the level of water stress in olive trees and what should the optimal plant-based sensor measure to help us manage deficit irrigation?
Descripción41 páginas.-- Capítulo 18 de la obra Water Scarcity and Sustainable Agriculture in Semiarid Environment : Tools, Strategies, and Challenges for Woody Crops Edited by:Iván Francisco García Tejero and Víctor Hugo Durán Zuazo, 2018
Versión del editorhttps://doi.org/10.1016/B978-0-12-813164-0.00018-1
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