Plant Physiol. 1984 May;75(1):138-41. doi: 10.1104/pp.75.1.138.
Plant physiology
T M Murphy
PMID: 16663558 PMCID: PMC1066849 DOI: 10.1104/pp.75.1.138
N-Ethylmaleimide causes a rapid efflux of K(+) from suspension-cultured cells of Rosa damascena. This efflux shows many characteristics of the ultraviolet-induced efflux of K(+), including the appearance of HCO(3) (-) together with the K(+) and inhibition by respiratory inhibitors. Cysteine inhibits the ultraviolet-induced efflux of K(+). These results are interpreted to mean that ultraviolet induces K(+) efflux through an alteration of sulfhydryl residues.