Global COE Program: Evolution and Biodiversity, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
Biochem Biophys Res Commun. 2010 Oct 1;400(4):455-60. doi: 10.1016/j.bbrc.2010.08.134. Epub 2010 Sep 9.
Plant Ca(2+) signals are involved in a sizable array of intracellular signaling pathways after pest invasion. Upon herbivore feeding there is a dramatic Ca(2+) influx, followed by the activation of Ca(2+)-dependent signal transduction pathways that include interacting downstream networks of kinases for defense responses. Notably, Ca(2+)-binding sensory proteins such as Ca(2+)-dependent protein kinases (CPKs) have recently been documented to mediate the signaling following Ca(2+) influx after herbivory, in phytohormone-independent manners. Here, we review the sequence of signal transductions triggered by herbivory-evoked Ca(2+) signaling leading to CPK actions for defense responses, and discuss in a comparative way the involvement of CPKs in the signal transduction of a variety of other biotic and abiotic stresses.
植物钙离子信号在受到虫害侵袭后，参与了一系列广泛的细胞内信号通路。在食草动物取食后，会出现剧烈的钙离子内流，随后激活依赖钙离子的信号转导途径，包括防御反应的相互作用下游激酶网络。值得注意的是，最近有研究表明，钙离子结合感应蛋白，如钙离子依赖蛋白激酶（CPKs），以非依赖植物激素的方式，介导食草动物取食后钙离子内流后的信号转导。在这里，我们综述了由食草动物诱导的钙离子信号引发的信号转导序列，这些信号导致了防御反应中 CPK 的作用，并以比较的方式讨论了 CPK 在各种生物和非生物胁迫信号转导中的参与。
