The phenomenon of cavitation in grapevine… : unravelling implicated mechanisms

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Cavitation is a physiological dysfunction that takes place in the xylem of water stressed plants. It leads to a loss of hydraulic conductance (kL) as the vessels are filled with air. This impacts water supply, water potential (ΨL) and canopy hydration. Stomatal clossure is an effective response upon...

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Detalles Bibliográficos
Autores principales:	Hugalde, Inés, Bonada, Marcos, Vila, Hernán
Formato:	article Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias 2018
Materias:	Vid Xilema Potencial hídrico foliar Conductancia estomática Syrah Grenache Cavitation Stomatal conductance Mechanistic model Cavitación en vid Xilema de las plantas Conductancia hidráulica Modelo mecanístico
Acceso en línea:	http://bdigital.uncu.edu.ar/11589
Aporte de:	Biblioteca Digital de Universidad Nacional de Cuyo

id	I11-R811589
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institution	Universidad Nacional de Cuyo
institution_str	I-11
repository_str	R-8
collection	Biblioteca Digital
language	Inglés
orig_language_str_mv	eng
topic	Vid Xilema Potencial hídrico foliar Conductancia estomática Syrah Grenache Cavitation Stomatal conductance Mechanistic model Cavitación en vid Xilema de las plantas Conductancia hidráulica Modelo mecanístico
spellingShingle	Vid Xilema Potencial hídrico foliar Conductancia estomática Syrah Grenache Cavitation Stomatal conductance Mechanistic model Cavitación en vid Xilema de las plantas Conductancia hidráulica Modelo mecanístico Hugalde, Inés Bonada, Marcos Vila, Hernán The phenomenon of cavitation in grapevine… : unravelling implicated mechanisms
topic_facet	Vid Xilema Potencial hídrico foliar Conductancia estomática Syrah Grenache Cavitation Stomatal conductance Mechanistic model Cavitación en vid Xilema de las plantas Conductancia hidráulica Modelo mecanístico
description	Cavitation is a physiological dysfunction that takes place in the xylem of water stressed plants. It leads to a loss of hydraulic conductance (kL) as the vessels are filled with air. This impacts water supply, water potential (ΨL) and canopy hydration. Stomatal clossure is an effective response upon diminishing momentary or seasonal foliar hydraulic contents. Depending on each type of plant, stomata may close preventing catastrophic cavitations. This research intended to understand how stomatal control acts upon cavitation events in two contrasting grapevine varieties, Syrah and Grenache. A mechanistic was developed model based on the water and vapour fluxes, kL, stomata conductance (gs), and the vulnerability to cavitation of the xylematic tissue. The theoretical model explains how plants respond to drought and avoid catastrophic cavitation. Water stressed grapevines couple their gs with their kL in order to avoid embolism. It is not stomatal closure, by istself, the controlling mechanism. Grapevines under mild water stress, do not need to completely close their stomata in order to avoid cavitation, therefore, photosynthesis is not completely impeded, and the cost in terms of carbon assimilation is less than expected for other species.
format	article Artículo Artículo publishedVersion
author	Hugalde, Inés Bonada, Marcos Vila, Hernán
author_facet	Hugalde, Inés Bonada, Marcos Vila, Hernán
author_sort	Hugalde, Inés
title	The phenomenon of cavitation in grapevine… : unravelling implicated mechanisms
title_short	The phenomenon of cavitation in grapevine… : unravelling implicated mechanisms
title_full	The phenomenon of cavitation in grapevine… : unravelling implicated mechanisms
title_fullStr	The phenomenon of cavitation in grapevine… : unravelling implicated mechanisms
title_full_unstemmed	The phenomenon of cavitation in grapevine… : unravelling implicated mechanisms
title_sort	phenomenon of cavitation in grapevine… : unravelling implicated mechanisms
publisher	Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias
publishDate	2018
url	http://bdigital.uncu.edu.ar/11589
work_keys_str_mv	AT hugaldeines thephenomenonofcavitationingrapevineunravellingimplicatedmechanisms AT bonadamarcos thephenomenonofcavitationingrapevineunravellingimplicatedmechanisms AT vilahernan thephenomenonofcavitationingrapevineunravellingimplicatedmechanisms AT hugaldeines elfenomenodelacavitacionenviddescifrandolosmecanismosimplicados AT bonadamarcos elfenomenodelacavitacionenviddescifrandolosmecanismosimplicados AT vilahernan elfenomenodelacavitacionenviddescifrandolosmecanismosimplicados AT hugaldeines phenomenonofcavitationingrapevineunravellingimplicatedmechanisms AT bonadamarcos phenomenonofcavitationingrapevineunravellingimplicatedmechanisms AT vilahernan phenomenonofcavitationingrapevineunravellingimplicatedmechanisms
bdutipo_str	Repositorios
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The phenomenon of cavitation in grapevine… : unravelling implicated mechanisms

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