Interactions between Metabolism and Signal Functions of Polyamines and Nitric Oxide in Plants

Abstrakt

This review summarizes the current knowledge of metabolism and function of polyamines and signalling molecules of NO in plants. Polyamines (PA) interact with polyanionic biomolecules such as DNA or some proteins and appear to be involved in a wide range of plant pro¬cesses. Despite their significance, the polyamine-dependent signal transducer system has not yet been found. It has been shown that PA induce NO biosynthesis in plants. PA seem to be mediators in pathogen defence, abiotic stresses and senescence.