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 upo...

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Autores principales: Hugalde, Inés, Bonada, Marcos, Vila, Hernán
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Facultad de Ciencias Agrarias-UNCuyo 2018
Materias:
cavitación
conductancia estomática
conductancia hidráulica
modelo mecanístico
Syrah
Grenache
cavitation
stomatal conductance
hydraulic conductance
mechanistic model
Acceso en línea:https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/2925
Aporte de:
Revista de la Facultad de Ciencias Agrarias UNCuyo de Universidad Nacional de Cuyo
id I11-R107article-2925
record_format ojs
institution Universidad Nacional de Cuyo
institution_str I-11
repository_str R-107
container_title_str Revista de la Facultad de Ciencias Agrarias UNCuyo
language Inglés
format Artículo revista
topic cavitación
conductancia estomática
conductancia hidráulica
modelo mecanístico
Syrah
Grenache
cavitation
stomatal conductance
hydraulic conductance
mechanistic model
Syrah
Grenache
spellingShingle cavitación
conductancia estomática
conductancia hidráulica
modelo mecanístico
Syrah
Grenache
cavitation
stomatal conductance
hydraulic conductance
mechanistic model
Syrah
Grenache
Hugalde, Inés
Bonada, Marcos
Vila, Hernán
The phenomenon of cavitation in grapevine"¦ Unravelling implicated mechanisms
topic_facet cavitación
conductancia estomática
conductancia hidráulica
modelo mecanístico
Syrah
Grenache
cavitation
stomatal conductance
hydraulic conductance
mechanistic model
Syrah
Grenache
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
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 grapevinescouple 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.
publisher Facultad de Ciencias Agrarias-UNCuyo
publishDate 2018
url https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/2925
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first_indexed 2022-06-20T13:51:55Z
last_indexed 2022-06-20T13:51:55Z
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