中文摘要：

以胞质钙离子浓度变化（钙信号）为核心的钙通信系统在植物机械响应中发挥着不可替代的作用。本文综述了机械刺激诱导的植物细胞钙信号及其生理作用、植物机械敏感钙通道,以及TCH基因编码的钙调蛋白和钙调蛋白类似蛋白等的研究进展,总结了该领域尚待解决的问题,并对未来的研究方向进行了展望。

英文摘要：

Calcium signalling system,with calcium signal as the most important component,plays indispensible functions in plant mechanoresponses.Mechano-induced calcium signals have been observed in different plant species.Recent observation of mechanostimulus-specific calcium signatures with Yellow cameleon 3.6 imaging has demonstrated that calcium is an early trigger of the complex mechanotransduction pathways in plant cells.The essential functions of different calcium signalling components in plant mechanoresponses have also been revealed by pharmacological approaches.Although the potential existence of plant specific starch-activated Ca2＋ channels is an attractive hypothetical mechanism for plant mechanoperception,convinced candidate molecules for these channels have not yet been identified.Similarly,the original discovery of touch-inducible genes suggested the potential involvement of calmodulin or calmodulin-like proteins in Arabidopsis mechanoresponses,but the mechano-related functions of these touch-inducible genes have not been investigated.The present article reviewed the progresses achieved in the investigations of calcium signalling in plant mechanoresponses,summarized the remaining questions and proposed future directions for this research field.