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Short‐ and Long‐term Effects of High Temperatures (47–49 °C) on Tobacco Leaves, in. Efflux and 32 P Incorporation into Phospholipids
Author(s) -
BENZIONI ALIZA,
ITAI CHANAN
Publication year - 1973
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.1399-3054.1973.tb08595.x
Subject(s) - efflux , chemistry , membrane , biophysics , membrane integrity , chromatography , biochemistry , biology
The efflux of 36 C and 14 C metabolites from heat‐treated tissue was studied. A two‐minute heat treatment at 47.5°C increased the leakiness of the membranes. The heat effect may be reversed either by treatment with kinetin or may occur spontaneously with time. The spontaneous reversal is tem—perature dependent and resembles the recovery of CO 2 fixa—tion after heat treatment. The loss of membrane integrity is reflected in the rate of incorporation of 32 P into phospho—lipids.