Glutathione is not involved in light-, Dark-, Ca- and H2O2- induced stomatal movement in Arabidopsis
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2012, Vol 8, Issue 3
Abstract
Glutathione (GSH), is a thiol-containing tripeptide, maintains redox homeostasis in plants under normal and stressful conditions. In this study, we investigated whether GSH involved in light-, dark-, Ca- and H[sub]2[/sub]O[sub]2[/sub]-induced stomatal movement in [i]Arabidopsis[/i]. Application of GSH and a GSH decreasing chemical (CDNB; 1-chloro-2,4-dinitrobenzene) did not affect stomatal aperture in guard cells of Arabidopsis. Dark induced stomatal closure and light induced stomatal opening but pre-treatment of GSH and CDNB did not alter dark- and light-induced stomatal aperture. Treatment of guard cells with Ca and H[sub]2[/sub]O[sub]2[/sub] did not affect GSH contents in guard cells but induced stomatal closure in both wild type and chorinal-1 (ch1-1) mutant plants. In addition, pre-treatment of GSH and CDNB did not affect Ca and H[sub]2[/sub]O[sub]2[/sub]-induced stomatal closure in both plants. Taken together these results suggest that GSH might not directly affect light-, dark-, Ca- and H[sub]2[/sub]O[sub]2[/sub]-induced stomatal movement in guard cells of [i]Arabidopsis[/i].
Authors and Affiliations
Md Sarwar Jahan, Mohd Bin Che Lah, Syed Syed Kamarulzaman
Keywords
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