Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.

Plants respond to salinity by altering their physiological parameters in order to maintain their water balance. The reduction in root hydraulic conductivity is one of the first responses of plants to the presence of salt in order to minimize water stress. Although its regulation has been commonly at...

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Autores principales:	Monica Calvo-Polanco, Beatriz Sánchez-Romera, Ricardo Aroca
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a492ec70bfc74ffeb9dfef09e975d200
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spelling	oai:doaj.org-article:a492ec70bfc74ffeb9dfef09e975d2002021-11-18T08:29:49ZMild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.1932-620310.1371/journal.pone.0090631https://doaj.org/article/a492ec70bfc74ffeb9dfef09e975d2002014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24595059/?tool=EBIhttps://doaj.org/toc/1932-6203Plants respond to salinity by altering their physiological parameters in order to maintain their water balance. The reduction in root hydraulic conductivity is one of the first responses of plants to the presence of salt in order to minimize water stress. Although its regulation has been commonly attributed to aquaporins activity, osmotic adjustment and the toxic effect of Na+ and Cl- have also a main role in the whole process. We studied the effects of 30 mM NaCl on Phaseolus vulgaris plants after 9 days and found different responses in root hydraulic conductivity over-time. An initial and final reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl was attributed to an initial osmotic shock after 1 day of treatment, and to the initial symptoms of salt accumulation within the plant tissues after 9 days of treatment. After 6 days of NaCl treatment, the increase in root hydraulic conductivity to the levels of control plants was accompanied by an increase in root fructose content, and with the intracellular localization of root plasma membrane aquaporins (PIP) to cortex cells close to the epidermis and to cells surrounding xylem vessels. Thus, the different responses of bean plants to mild salt stress over time may be connected with root fructose accumulation, and intracellular localization of PIP aquaporins.Monica Calvo-PolancoBeatriz Sánchez-RomeraRicardo ArocaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 3, p e90631 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Monica Calvo-Polanco Beatriz Sánchez-Romera Ricardo Aroca Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.
description	Plants respond to salinity by altering their physiological parameters in order to maintain their water balance. The reduction in root hydraulic conductivity is one of the first responses of plants to the presence of salt in order to minimize water stress. Although its regulation has been commonly attributed to aquaporins activity, osmotic adjustment and the toxic effect of Na+ and Cl- have also a main role in the whole process. We studied the effects of 30 mM NaCl on Phaseolus vulgaris plants after 9 days and found different responses in root hydraulic conductivity over-time. An initial and final reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl was attributed to an initial osmotic shock after 1 day of treatment, and to the initial symptoms of salt accumulation within the plant tissues after 9 days of treatment. After 6 days of NaCl treatment, the increase in root hydraulic conductivity to the levels of control plants was accompanied by an increase in root fructose content, and with the intracellular localization of root plasma membrane aquaporins (PIP) to cortex cells close to the epidermis and to cells surrounding xylem vessels. Thus, the different responses of bean plants to mild salt stress over time may be connected with root fructose accumulation, and intracellular localization of PIP aquaporins.
format	article
author	Monica Calvo-Polanco Beatriz Sánchez-Romera Ricardo Aroca
author_facet	Monica Calvo-Polanco Beatriz Sánchez-Romera Ricardo Aroca
author_sort	Monica Calvo-Polanco
title	Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.
title_short	Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.
title_full	Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.
title_fullStr	Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.
title_full_unstemmed	Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.
title_sort	mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/a492ec70bfc74ffeb9dfef09e975d200
work_keys_str_mv	AT monicacalvopolanco mildsaltstressconditionsinducedifferentresponsesinroothydraulicconductivityofphaseolusvulgarisovertime AT beatrizsanchezromera mildsaltstressconditionsinducedifferentresponsesinroothydraulicconductivityofphaseolusvulgarisovertime AT ricardoaroca mildsaltstressconditionsinducedifferentresponsesinroothydraulicconductivityofphaseolusvulgarisovertime
_version_	1718421759274778624

Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.

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