ISSN:
1573-5036
Keywords:
Cucumis sativus L.
;
Glutathione
;
Glutathione reductase
;
H2S
;
H2S emission
;
Oxidized glutathione
;
Spinacia oleracea L.
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Exposure of spinach plants to 250 ppb H2S for two days resulted in a four-fold increase of the reduced glutathione (GSH)/sulphydryl (SH) concentration and in a two-fold increase of the oxidized glutathione (GSSG) concentration of the shoots. Both in the presence and the absence of H2S, glutathione was predominantly present in the reduced form (more than 86%). When the H2S exposure was ceased both the levels of GSH and GSSG in the shoot rapidly decreased. There was no emission of H2S by the leaves after the fumigation was terminated. Glutathione reductase activity in the shoots was not affected by short term H2S fumigation. It is proposed that glutathione plays the role of a temporary storage compound of excessive reduced sulphur in spinach shoots when exposed to H2S in the ambient air.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02198121
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