Braam J
Department of Biochemistry and Cell Biology, Rice University, Houston, Texas.
Cell Calcium. 1992 Jun-Jul;13(6-7):457-63. doi: 10.1016/0143-4160(92)90058-z.
Plants are very sensitive to environmental stimuli and have evolved the ability to adapt to many environmental stresses by altering development. In particular, mechanical stimuli such as touch or wind, result in growth changes that result in plants with greater resistance to such mechanical stimuli. We have initiated a molecular dissection of the pathways that enable perception of and responses to these environmental stimuli in plants. We have discovered five genes--termed the TCH genes--whose expression levels are strongly and rapidly increased in response to stimuli such as touch, wind, rain, wounding and darkness. Three of the TCH genes encode proteins related to calmodulin thereby implicating roles for calcium ions and calmodulin in the transduction of signals from the environment.
植物对环境刺激非常敏感，并通过改变发育过程进化出了适应多种环境胁迫的能力。特别是触摸或风等机械刺激，会导致生长变化，使植物对这类机械刺激具有更强的抗性。我们已开始从分子层面剖析植物中感知并响应这些环境刺激的信号通路。我们发现了五个基因——称为TCH基因——其表达水平会因触摸、风、雨、伤害和黑暗等刺激而强烈且迅速地升高。其中三个TCH基因编码与钙调蛋白相关的蛋白质，这表明钙离子和钙调蛋白在环境信号转导中发挥作用。
