title: Inhibition of elongation and H(+) and K (+) transport by the phosphodiesterase inhibitor aminophylline in plant tissue.
abstract: Aminophylline, an inhibitor of cyclic nucleotide phosphodiesterase (EC 3.1.4.17), inhibits elongation and correlated H(+) and K(+) transport in embryos of Haplopappus gracilis and in pea internode segments. Moreover, the drug strongly inhibits the stimulation of these processes by fusicoccin and indole-3-acetic acid and reduces passive permeability of the membrane. The possible mechanisms of action of aminophylline are discussed.
authors.affiliation: Istituto di Scienze Botaniche e Centro del C.N.R. per la Biologia Cellulare e Molecolare delle Piante, Università di Milano, Via Celoria 26, I-20133, Milano, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Levi
authors.forename: E
authors.initials: E
authors.lastname: Sparvoli
authors.forename: M G
authors.initials: MG
authors.lastname: Galli