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Photodynamic activity of cercosporin on plant tissues
Author(s) -
MACRÍ F.,
VIANELLO A.
Publication year - 1979
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/j.1365-3040.1979.tb00078.x
Subject(s) - singlet oxygen , chemistry , membrane , photochemistry , polyunsaturated fatty acid , incandescent light bulb , peroxide , oxygen , biochemistry , biophysics , organic chemistry , biology , fatty acid
Cercosporin, excited by incandescent light in the presence of oxygen, induced a loss of ions from the plant tissues tested. Silymarin, BHA (2(3)‐tert‐butyl‐4‐hydroxyanisole) and EDTA were effective in lowering the activity of cercosporin. Circumstantial evidence suggests that the toxic effect may be mediated by the singlet oxygen and free radical formation which induces a lipoperoxidative degradation of the polyunsaturated fatty acids of cell membranes.