Signal transduction mechanisms in plants: An overview

This article provides an overview on recent advances in some of the basic s ignalling mechanisms that participate in a wide variety of stimulus-respons e pathways. The mechanisms include calcium-based signalling, G-protein-medi ated-signalling and signalling involving inositol phospholipids, with discu ssion on the role of protein kinases and phosphatases interspersed. As a fu rther defining feature, the article highlights recent exciting findings on three extracellular components that have not been given coverage in previou s reviews of signal transduction in plants, extracellular integrin-like rec eptors, growth and development.