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Sulphate induced accumulation of glutathione and frost‐tolerance of spinach leaf tissue
Author(s) -
Kok Luit J.,
Kan Peter J. L.,
Tánczos Otto G.,
Kuiper Pieter J. C.
Publication year - 1981
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1981.tb02727.x
Subject(s) - spinach , glutathione , frost (temperature) , incubation , chemistry , darkness , horticulture , botany , food science , biochemistry , biology , enzyme , geomorphology , geology
Water‐extractable sulfhydryl content of spinach leaf discs increased up to four‐fold when they were incubated with sulphate (10–100 m M ) for 20 h in light or darkness. The accumulated sulfhydryl compound was reduced glutathione. An increased glutathione content did not result in a higher frost‐tolerance of the spinach leaf discs. Both freezing temperature and time of exposure to freezing, determined as the point at which 50% of the cells were killed, remained unchanged after incubation with sulphate. These observations suggest that a sulfhydryl compound as glutathione does not play a direct role in protection of plants against freezing injury.