(h)GR, beans and drought stress

Abstract : Reactive oxygen species (ROS) are commonly found in plants as natural by-products of the metabolism but their production is greatly enhanced under abiotic stresses. Particular metabolites and enzymes belonging to the ascorbate-glutathione cycle are able to scavenge these deleterious molecules and modulate the cellular redox-status. In the March issue of Journal of Plant Physiology, we have shown that drought stress induces a raise in glutathione reductase (GR) activity and gene expression that could be related to the intensity of the drought treatment and the drought susceptibility of the bean cultivar (cowpea and/or common bean). In the present addendum we show new data on GR specific activity during progressive drought stress and recovery of the drought-susceptible bean cultivar which can be related to the previously found dual-targeted GR gene expression. Furthermore, since in leguminous plants homoglutathione (hGSH) is generally the most abundant low molecular weight thiol form, we discuss on the occurrence of a (homo)glutathione reductase activity in beans.
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https://hal-bioemco.ccsd.cnrs.fr/bioemco-00396800
Contributor : Maria Cruz de Carvalho <>
Submitted on : Thursday, June 18, 2009 - 7:36:44 PM
Last modification on : Sunday, October 20, 2019 - 1:24:13 AM

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  • HAL Id : bioemco-00396800, version 1

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Maria Cruz de Carvalho, Dominique Contour-Ansel. (h)GR, beans and drought stress. Plant Signaling and Behavior, Taylor & Francis, 2008, 3 (10), pp.834-835. ⟨bioemco-00396800⟩

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