保卫细胞钙信号的研究进展  

Progress of Study on Calcium Signaling in Guard Cells

作　　者：陈玉玲[1] 肖玉梅[1] 王学臣[1] 

机构地区：[1]中国农业大学生物学院植物生理生化国家重点实验室,北京100094

出　　处：《植物学通报》2003年第2期144-151,共8页Chinese Bulletin of Botany

基　　金：国家重点基础研究发展规划项目资助 (批准号 :G19990 1170 0 )

摘　　要：钙 (Ca2 + )是多种信号途径的第二信使。Ca2 + 成像技术的成熟和发展为显示保卫细胞胞质Ca2 +浓度 ([Ca2 + ]cyt)的分布及外界刺激引起 [Ca2 + ]cyt的变化模式提供了很好的研究工具 ,关于细胞内外Ca2 +库释放Ca2 + 的机制也有了较清楚的认识。拟南芥突变体的研究使Ca2 + 信号上游分子及其排序更加明确 ,[Ca2 +Calcium is the second messenger involved in multiple signal transduction pathways. Distribution of [Ca 2+ ] cyt in guard cell and changes of [Ca 2+ ] cyt induced by exogeneous stimuli can be showed by using Ca 2+ fluorescent imaging technique, and the mechanisms of Ca 2+ release from intracellular and extracellular Ca 2+ pools are partially revealed. The Arabidopsis mutants in some given sites show that those components also involved in Ca 2+ signal transduction pathway and provide molecular evidences for Ca 2+ signaling in guard cell. Other essential processes are phosphorylation and dephosphorylation which are downstream of [Ca 2+ ] cyt elevation.

关 键 词：保卫细胞 钙信号 气孔 钙离子 信号转导 高等植物 ABA 

分 类 号：Q945[生物学—植物学]