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Utilización del cultivo de tejidos vegetales in vitro para el estudio de la respuesta de los cítricos al estrés salino

Authors: Pérez Clemente, Rosa María; Montoliu Vidal, Almudena; López Climent, María Fernanda; Arbona, Vicent; De Ollas Valverde, Carlos José; Vives, Vicente; Gomez-Cadenas, Aurelio;

Utilización del cultivo de tejidos vegetales in vitro para el estudio de la respuesta de los cítricos al estrés salino

Abstract

Este trabajo describe la puesta a punto de un sistema in vitro para el estudio de la toxicidad del NaCl en tres genotipos de cítricos, evitando el filtro de iones que constituye la raíz. Los cultivos se establecieron a partir de plantas de mandarino Cleopatra, citrange Carrizo y citrumelo CPB4475 cultivadas en invernadero. Se ensayaron diferentes concentraciones de NaCl y se seleccionó 60 mM como tratamiento salino para los diferentes experimentos. Los brotes de todos los genotipos estudiados acumularon concentraciones similares de iones cloruro cuando se cultivaron desprovistos del sistema radicular y mostraron los mismos daños foliares. No se observó incremento en la concentración de malondialdehido (como indicador del daño oxidativo) en ninguno de los genotipos y todos ellos mostraron patrones similares de señalización hormonal, con independencia de su tolerancia o sensibilidad cuando se cultivan en campo. El sistema in vitro descrito se postula como una herramienta útil para el estudio de los procesos bioquímicos implicados en la respuesta de los cítricos al estrés salino. In this work, an in vitro experimental system has been developed to study the toxic effect of NaCl on three citrus genotypes, avoiding the ion filter that represents the root system. Cultures were established from greenhouse growing plants of Cleopatra mandarin, Carrizo citrange and citrumelo CPB4475. Several salt concentrations were tested and 60 mM NaCl was selected as saline treatment. Shoots from all studied genotypes accumulated similar levels of chloride when cultured without roots and exhibited similar leaf damage. No increases in malondialdehyde levels (as a measure of oxidative stress) were observed in any genotype and similar patterns of hormonal signalling were exhibited in the three genotypes, despite their different tolerance under field conditions. The in vitro culture system has been proved as a useful tool to study biochemical processes involved in the response of citrus to salt stress. Este estudio fue financiado por el Ministerio de Ciencia e Innovación y la Fundació Bancaixa/Universitat Jaume I a través de la concesión de los proyectos AGL2010-22195-C03-01/AGR y P1 1B2009-01, respectivamente

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Spain
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Keywords

Citrus, Toxic effect of NaCl, In vitro, Ion filter, Salt stress, Cítrico, Filtro de iones, Estrés salino, Toxicidad del NaCl

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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