PRIMARY ALCOHOLS, SUBSTRATES FOR PHOSPHOLIPASE D-CATALYZED TRANSPHOSPHATIDYLATION, SUPPRESS THE CYTOKININ ACTION

摘要: Cytokinins have been recognised as potent plant growth regulators since 1955 (Skoog, 1994). However, it is only recently that elucidation of the molecular mechanism their perception and signal transduction has come about (Schmulling, 2001; Hutchinson Kieber, 2002; Romanov, 2002). Cytokinin receptors discovered so far are integral transmembrane proteins belonging to family receptor histidine kinases. The downstream signaling obviously occurs via phosphorelay pathway including phosphotransmitters (HP) response regulator (RR) A parallel set data obtained by means pharmacological analysis indicated possible involvement other components, in particular phospholipase D (PLD), early events triggered cytokinins (Romanov et al., 2000; Romanov Taking into account a defined inside cell complex process usually comprising crosstalk among different elements, both these sets not necessarily contradictory. For example, subtly tuned hormone pathways Ca2+, PLD, cyclic GMP, protein kinase(s), phosphatase(s), calmodulin, G-proteins constitute an integrated network aleurone stomatal guard cells (Ritchie