蓝光和Ca对小麦幼苗谷氨酸合成酶及钙调系统酶活性的影响  

Effects of blue-light and calcium on the activities of glutamate synthetase and enzymes belonging to calcium signal systems in seedlings of wheat

作　　者：段远霖[1] 李合生[2] 伍素辉[3] 杨泽敏[2] 

机构地区：[1]福建农林大学作物遗传育种研究所,福建福州350002 [2]华中农业大学农学系,湖北武汉430070 [3]华中农业大学资源环境与农业化学系,湖北武汉430070

出　　处：《福建农林大学学报（自然科学版）》2003年第2期209-212,共4页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：国家自然科学基金资助项目(39670432).

摘　　要：小麦黄化苗和绿苗经短时间蓝光照射,谷氨酸合成酶(GOGAT)活性明显增强,Ca能显著增强GOGAT活性.蓝光对小麦NO-3代谢过程中GOGAT活性的影响与细胞内钙调系统及其作用靶酶——Ca2+-ATPase、H+-ATPase活性密切相关,这表明钙信号系统可能参与了蓝光信号受体——隐花色素(cryptochrome)相关联的光敏感途径,从而调节植物NO-3代谢过程.小麦黄化苗和绿苗的蓝光受体可能不同.Treatment with short duration of bluelight and calcium obviously enhanced the activity of glutamate synthetase (GOGAT) in etiolated and green seedlings of wheat. The effect of bluelight on the activity of GOGAT in the process of NO-3 metabolism of wheat was closely related to Ca2+, CaM and their target enzymes, Ca2+ATPase and H+ATPase, which suggested that calcium signal systems had taken part in light sensing pathway associated with bluelight photoreceptor-Crytochrome, as a result, regulated NO-3 metabolism of plant, and that there were different bluelight photoreceptors existed in fully etiolated and green seedlings of wheat.

关 键 词：小麦 幼苗 谷氨酸合成酶 钙调系统酶 酶活性 蓝光 钙 光敏感途径 钙信号系统 蓝光信号受体 隐花色素 

分 类 号：S512.1[农业科学—作物学]