植物氮代谢硝酸还原酶水平调控机制的研究进展

被引:282
作者
刘丽
甘志军
王宪泽
机构
[1] 山东农业大学生命科学学院
[2] 泰山区岱庙街道办事处
[3] 山东农业大学生命科学学院 山东泰安
[4] 山东泰安
关键词
植物; 氮代谢; 硝酸还原酶; 调控机制; 进展;
D O I
暂无
中图分类号
Q945.1 [植物营养、代谢与呼吸];
学科分类号
071001 [植物学];
摘要
氮代谢是植株体内最基本的物质代谢之一,硝酸还原酶是植物氮代谢的关键酶。主要对植物氮代谢在硝酸还原酶水平上调控的研究新进展,尤其是其合成/降解及活性调控机制进行了较为系统的综述。硝酸还原酶合成的调控主要发生在转录水平和翻译水平上,硝酸还原酶降解的调控主要发生在翻译后水平上,同时NO-3及光在硝酸还原酶转录水平调控上的作用重大,硝酸还原酶编码基因转录的mRNA的稳定性强弱影响植物的氮代谢,而影响mRNA稳定性的因素很多,机理复杂;磷酸化/去磷酸化在硝酸还原酶活性调控中占举足轻重的地位,研究也比较深入。钝化蛋白也能够影响硝酸还原酶活性,许多小分子物质对硝酸还原酶活性有影响。
引用
收藏
页码:1355 / 1361
页数:7
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