Extracellular Calmodulin in Plants and Its Signaling Transduction Pathways

Abstract: Complex signal transduction networks have been constructed in plants. They are necessary for plants to regulate their growth and developmental programs， and response to environmental cues. Many intracellular and extracellular signal molecules participate in the regulation of plants. People believed the existence of extracellular peptide signal molecules in plants since the discovery of extracellular calmodulin (CaM). Because of the extensive biological functions， extracellular CaM participates in nearly all plant growth and development processes. We summarized recent findings， and then delineated extracellular CaM transmembrane and intracellular signaling transduction pathways. The direct or indirect relationships among heterotrimeric G proteins， PLC-IP₃-IP₃R signaling pathway， reactive oxygen species (ROS) and calcium channels， were the core contents of extracellular CaM signaling transduction.
    

CSTR: 32200.14.cjcb.2006.05.0014