Updates about Nitrate: Signal Role in Plants
New approaches to the role of nitrate as an important signaling agent, regulating broad functions of essential physiological processes in plants are presented. Genes, primary targets of nitrate signaling, were identified as responsible for nitrate sensing and transportation, its reduction as well as carbon supply for biosynthesis of amino acids and amids. Special chapter is dedicated to the impact of this signaling on the secondary metabolism. The discovery of the broad enzyme spectrum as targets of nitrate in C- and N-metabolism is a new developing area of research in plant physiology and biochemistry; it creates new promising approaches in modern agrobiotechnology.