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Lowering of Endogenous Lipoxygenase Activity in Pisum sativum Foliage by Cytokinin as Related to Senescence
Author(s) -
GROSSMAN SHLOMO,
LESHEM YA'ACOV Y.
Publication year - 1978
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.1399-3054.1978.tb01594.x
Subject(s) - lipoxygenase , pisum , endogeny , senescence , cytokinin , sativum , enzyme , biochemistry , psychological repression , biology , hormone , chemistry , microbiology and biotechnology , botany , auxin , gene expression , gene
Cytokinin (CK), when applied to intact pea plants, considerably lowered endogenous lipoxygenase levels. Furthermore it was demonstrated that the triggering of senescence induced by leaf detachment was invariably accompanied by a significant increase of lipoxygenase activity and the CK application considerably decelerates lipoxygenase increment. It is suggested that the lipoxygenase repression induced by CK is a contributing mechanism to the overall antisenescence action of the hormone, and that this may have biological implications.