Peptide signaling in plants

摘要

In plants, only a few peptides have been identified that act as signaling mole- cules (1). In contrast, signaling peptides are major players in all aspects of the life cycle in animals and yeast (2), suggesting that signaling mechanisms across the eu- karyotic kingdom are fundamentally dif- ferent. In animals and yeast, signaling peptides are synthesized, in general, as part of longer biologically inactive pre- proproteins, from which they are re- leased by specific proteases. The few signaling peptides studied in plants so far indicate that plants do not follow a sim- ilar approach to generate peptides.