Título

Glutathione plays a role in protecting leaves of Salvinia minima from Pb2+ damage associated with changes in the expression of SmGS genes and increased activity of GS

Autor

NEYI ELOISA ESTRELLA GOMEZ

ENRIQUE SAURI DUCH

JOSE OMAR ZAPATA PEREZ

JORGE MANUEL SANTAMARIA FERNANDEZ

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Referencia de datos

doi: DOI: 10.1016/j.envexpbot.2011.09.001

Materias

 AQUATIC FERN - (AUTORES) CHLOROPHYLLS - (AUTORES) GS - (AUTORES) GSH - (AUTORES) HEAVY METAL - (AUTORES) LEAD ACCUMULATION - (AUTORES) SMGS GENE - (AUTORES) BIOLOGÍA Y QUÍMICA - (CTI)

Resumen o descripción

The relationship between accumulation of Pb2+ and changes in GSH biosynthesis was analyzed in both leaves and roots of the Pb2+-hyperaccumulator aquatic fern Salvinia minima, after exposure to 40μM Pb(NO3)2. Lead accumulation in both tissues increased the accumulation of GSH, increased the enzymatic activity of glutathione synthase (GS), and caused changes in the expression levels of SmGS genes in both tissues. The damage caused by Pb on plant performance, was evaluated by the changes in the content of pigments, particularly on the carotenoids content. Lead accumulation caused more damage in roots than in leaves as indicated by the decrease on their carotenoids content. It is interesting that in leaves, the concentration of GSH, the activity of GS and the expression levels of SmGS gene were all higher than in roots. These results, together with our previous finding that roots accumulated more phytochelatins than did leaves of S. minima plants exposed to similar concentrations of lead (Estrella et al., 2009), suggest that the Pb-hyperaccumulator aquatic fern, S. minima, displays a coordinated and differential response to Pb2+ at leaves and roots, where GSH may play an important role in protecting leaves from the detrimental effects of lead, perhaps by counteracting the effect of free radicals.

Fecha de publicación

2012

Tipo de publicación

Artículo

Versión de la publicación

Versión publicada

Recurso de información

http://cicy.repositorioinstitucional.mx/jspui/handle/1003/743

Formato

application/pdf

Fuente

Environmental and Experimental Botany, 75, 188-194. doi:10.1016/j.envexpbot.2011.09.001

Idioma

Inglés

Relación

&

Santamaría, J. M. (2012). Glutathione plays a role in protecting leaves of salvinia minima from Pb2+ damage associated with changes in the expression of SmGS genes and increased activity of GS. Environmental and Experimental Botany, 75, 188-194. doi:10.1016/j.envexpbot.2011.09.001

Sugerencia de citación

Estrella-Gómez, N. E., Sauri-Duch, E., Zapata-Pérez, O.,

Repositorio Orígen

Repositorio Institucional CICY

Descargas

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