Carol Rachel J, Dolan Liam
Ecole Pratique des Hautes Etudes, 46 rue de Lille, F-75007 Paris, France.
J Exp Bot. 2006;57(8):1829-34. doi: 10.1093/jxb/erj201. Epub 2006 May 23.
Reactive oxygen species (ROS) play a diversity of roles in plants. In recent years, a role for NADPH oxidase-derived ROS during cell growth and development has been discovered in a number of plant model systems. These studies indicate that ROS are required for cell expansion during the morphogenesis of organs such as roots and leaves. Furthermore, there is evidence that ROS are required for root hair growth where they control the activity of calcium channels required for polar growth. The role of ROS in the control of root hair growth is reviewed here and results are highlighted that may provide insight into the mechanism of plant cell growth in general.
活性氧（ROS）在植物中发挥着多种作用。近年来，在许多植物模型系统中发现了NADPH氧化酶衍生的ROS在细胞生长和发育过程中的作用。这些研究表明，在根和叶等器官的形态发生过程中，ROS是细胞扩张所必需的。此外，有证据表明，根毛生长需要ROS，它们控制着极性生长所需的钙通道的活性。本文综述了ROS在根毛生长控制中的作用，并强调了可能为深入了解植物细胞生长机制提供线索的研究结果。
