title: Polyamines inhibit biosynthesis of ethylene in higher plant tissue and fruit protoplasts.
abstract: Ethylene production in apple fruit and protoplasts and in leaf tissue was inhibited by spermidine or spermine. These polyamines, as well as putrescine, inhibited auxin-induced ethylene production and the conversion of methionine and 1-aminocyclopropane-1-carboxylic acid to ethylene. Polyamines were more effective as inhibitors of ethylene synthesis at the early, rather than at the late, stages of fruit ripening. Ca(2+) in the incubation medium reduced the inhibitory effect caused by the amines. A possible mode of action by which polyamines inhibit ethylene production is discussed.
authors: Postharvest Physiology Laboratory, Beltsville Agricultural Research Center (W), Beltsville, Maryland 20705.
authors: A
authors: A
authors: Apelbaum
authors: A C
authors: AC
authors: Burgoon
authors: J D
authors: JD
authors: Anderson
authors: M
authors: M
authors: Lieberman