NOXs生成的活性氧对根生长和发育调控的研究进展

Research Advances in Regulation of NOXs-derived ROS on Root Growth and Development

活性氧(reactive oxygen species,ROS)在植物体内作为信号分子调节根生长和发育的研究,越来越受到人们的关注。文章结合最新的研究进展,首先介绍了ROS产生关键酶——NADPH氧化酶(NADPH oxidases,NOXs)的结构及其在根生长和发育过程中的功能。根据决定根生长和发育的两个关键因素:细胞膨胀和细胞分裂,介绍了NOXs来源的ROS对细胞壁特性和细胞骨架组装的影响。最后,重点论述了NOXs来源的ROS调控根生长和发育,尤其是顶端生长的机理。

More and more researchers are paying close attention to the regulation of reactive oxygen species （ROS）, as signal molecule, on the growth and development of roots. Combined with the latest research advanc- es, structure and functions of NADPH oxidases （NOXs, as the key enzymes which produced ROS） in root growth and development were introduced firstly in the present paper. Based on the key factors during root growth and development： cell expansion and cell division, the effects of NOXs-derived ROS on properties of cell wall and reassemble of cell cytoskeleton were discussed in the second part. Finally, mechanism of NOXs- derived ROS in regulation of root growth and development, especially roots tip growth were discussed in detail in the paper.