Effects of Amiloride on Sodium Accumulation in Intact Lycopersicon esculentum Plants

Amiloride, a diuretic drug, has been reported to specifically inhibit Na+ /H+ exchange in tonoplast vesicles. The effects of amiloride on Na+ accumulation, uptake, and retention, and stability of leaf membranes in intact tomato plants treated with 25 mM NaCI were studied. The presence of 0.1 mM amil...

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Autores principales: Taleisnik, Edith Liliana, Grunberg, Karina Alejandra, Lino, Anibal José
Formato: Artículo
Lenguaje:Español
Publicado: 1991
Materias:
SB Cultura de la planta
Acceso en línea:http://pa.bibdigital.ucc.edu.ar/3707/1/A_Taleisnik_Grunberg_%20Lino.pdf
Aporte de:
Producción Académica Universidad Católica de Córdoba (UCCor) de Universidad Católica de Córdoba
id I38-R144-3707
record_format dspace
spelling I38-R144-37072025-04-14T19:42:58Z http://pa.bibdigital.ucc.edu.ar/3707/ Effects of Amiloride on Sodium Accumulation in Intact Lycopersicon esculentum Plants Taleisnik, Edith Liliana Grunberg, Karina Alejandra Lino, Anibal José SB Cultura de la planta Amiloride, a diuretic drug, has been reported to specifically inhibit Na+ /H+ exchange in tonoplast vesicles. The effects of amiloride on Na+ accumulation, uptake, and retention, and stability of leaf membranes in intact tomato plants treated with 25 mM NaCI were studied. The presence of 0.1 mM amiloride in the root medium caused an increase in Na+ accumulation in leaves and a decrease in roots. This increase was not related to a modification of Na+ uptake rates by roots of amiloride-treated plants. Higher Na+ retention in such plants was found in pulse-chase experiments. Leaf discs from treated plants also showed enhanced membrane stability as determined by electroconductivity tests. Proton extrusion from roots was inhibited by amiloride, but this effect was not associated with Na+ transport. It is suggested that, in the present system, amiloride may have affected the Na+ retranslocation mechanism in leaves. 1991-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/closedAccess application/pdf spa http://pa.bibdigital.ucc.edu.ar/3707/1/A_Taleisnik_Grunberg_%20Lino.pdf Taleisnik, Edith Liliana ORCID: https://orcid.org/0000-0002-2980-8252 <https://orcid.org/0000-0002-2980-8252>, Grunberg, Karina Alejandra ORCID: https://orcid.org/0000-0001-8406-5546 <https://orcid.org/0000-0001-8406-5546> and Lino, Anibal José ORCID: https://orcid.org/0000-0003-4853-6341 <https://orcid.org/0000-0003-4853-6341> (1991) Effects of Amiloride on Sodium Accumulation in Intact Lycopersicon esculentum Plants. Journal of Plant Physiology, 13 (6). pp. 634-639. ISSN 0176-1617 info:eu-repo/semantics/altIdentifier/doi/10.1016/S0176-1617(11)81308-8
institution Universidad Católica de Córdoba
institution_str I-38
repository_str R-144
collection Producción Académica Universidad Católica de Córdoba (UCCor)
language Español
orig_language_str_mv spa
topic SB Cultura de la planta
spellingShingle SB Cultura de la planta
Taleisnik, Edith Liliana
Grunberg, Karina Alejandra
Lino, Anibal José
Effects of Amiloride on Sodium Accumulation in Intact Lycopersicon esculentum Plants
topic_facet SB Cultura de la planta
description Amiloride, a diuretic drug, has been reported to specifically inhibit Na+ /H+ exchange in tonoplast vesicles. The effects of amiloride on Na+ accumulation, uptake, and retention, and stability of leaf membranes in intact tomato plants treated with 25 mM NaCI were studied. The presence of 0.1 mM amiloride in the root medium caused an increase in Na+ accumulation in leaves and a decrease in roots. This increase was not related to a modification of Na+ uptake rates by roots of amiloride-treated plants. Higher Na+ retention in such plants was found in pulse-chase experiments. Leaf discs from treated plants also showed enhanced membrane stability as determined by electroconductivity tests. Proton extrusion from roots was inhibited by amiloride, but this effect was not associated with Na+ transport. It is suggested that, in the present system, amiloride may have affected the Na+ retranslocation mechanism in leaves.
format Artículo
author Taleisnik, Edith Liliana
Grunberg, Karina Alejandra
Lino, Anibal José
author_facet Taleisnik, Edith Liliana
Grunberg, Karina Alejandra
Lino, Anibal José
author_sort Taleisnik, Edith Liliana
title Effects of Amiloride on Sodium Accumulation in Intact Lycopersicon esculentum Plants
title_short Effects of Amiloride on Sodium Accumulation in Intact Lycopersicon esculentum Plants
title_full Effects of Amiloride on Sodium Accumulation in Intact Lycopersicon esculentum Plants
title_fullStr Effects of Amiloride on Sodium Accumulation in Intact Lycopersicon esculentum Plants
title_full_unstemmed Effects of Amiloride on Sodium Accumulation in Intact Lycopersicon esculentum Plants
title_sort effects of amiloride on sodium accumulation in intact lycopersicon esculentum plants
publishDate 1991
url http://pa.bibdigital.ucc.edu.ar/3707/1/A_Taleisnik_Grunberg_%20Lino.pdf
work_keys_str_mv AT taleisnikedithliliana effectsofamilorideonsodiumaccumulationinintactlycopersiconesculentumplants
AT grunbergkarinaalejandra effectsofamilorideonsodiumaccumulationinintactlycopersiconesculentumplants
AT linoanibaljose effectsofamilorideonsodiumaccumulationinintactlycopersiconesculentumplants
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