Instituto de Fisiología Vegetal (INFIVE) CC327, Universidad Nacional de La Plata-CONICET, Diagonal 113 y calle 61 N°495, CP 1900 La Plata, Buenos Aires, Argentina.
Plant Cell Rep. 2013 Jun;32(6):853-66. doi: 10.1007/s00299-013-1434-1. Epub 2013 Apr 13.
Nitric oxide (NO) is a small gaseous molecule, with a free radical nature that allows it to participate in a wide spectrum of biologically important reactions. NO is an endogenous product in plants, where different biosynthetic pathways have been proposed. First known in animals as a signaling molecule in cardiovascular and nervous systems, it has turned up to be an essential component for a wide variety of hormone-regulated processes in plants. Adaptation of plants to a changing environment involves a panoply of processes, which include the control of CO2 fixation and water loss through stomatal closure, rearrangements of root architecture as well as growth restriction. The regulation of these processes requires the concerted action of several phytohormones, as well as the participation of the ubiquitous molecule NO. This review analyzes the role of NO in relation to the signaling pathways involved in stomatal movement, plant growth and senescence, in the frame of its interaction with abscisic acid, auxins, gibberellins, and ethylene.
一氧化氮（NO）是一种小分子气体，具有自由基性质，使其能够参与广泛的生物学重要反应。NO 是植物中的内源性产物，已经提出了不同的生物合成途径。最初在动物中作为心血管和神经系统中的信号分子而被认识，现在已成为植物中多种激素调节过程的重要组成部分。植物对环境变化的适应涉及多种过程，包括通过关闭气孔控制 CO2 固定和水分流失、根系结构的重新排列以及生长受限。这些过程的调节需要几种植物激素的协同作用，以及无处不在的分子 NO 的参与。本综述分析了 NO 在与气孔运动、植物生长和衰老相关的信号通路中的作用，以及其与脱落酸、生长素、赤霉素和乙烯的相互作用。
