Asgher Mohd, Per Tasir S, Masood Asim, Fatma Mehar, Freschi Luciano, Corpas Francisco J, Khan Nafees A
Plant Physiology and Biochemistry Laboratory, Department of Botany, Aligarh Muslim University, Aligarh, 202002, India.
Laboratory of Plant Physiology and Biochemistry, Department of Botany, University of Sao Paulo, Sao Paulo, Brazil.
Environ Sci Pollut Res Int. 2017 Jan;24(3):2273-2285. doi: 10.1007/s11356-016-7947-8. Epub 2016 Nov 3.
Nitric oxide (NO) is a free radical molecule involved in an array of functions under physiological and adverse environmental conditions. As other free radical molecules, NO biological action depends on its cellular concentration, acting as a signal molecule when produced at low concentration or resulting in cellular damage when produced at sufficiently high levels to trigger nitro-oxidative stress. Over the last decade, significant progress has been made in characterizing NO metabolism and action mechanism, revealing that diverse biosynthetic routes can generate this free radical in plants and its action mainly occurs through posttranslational modification (nitration and S-nitrosylation) of target proteins. Intricate crosstalk networks between NO and other signaling molecules have been described involving phytohormones, other second messengers, and key transcription factors. This review will focus on our current understanding of NO interplay with phytohormones and other plant growth regulators under abiotic stress conditions.
一氧化氮（NO）是一种自由基分子，在生理和不利环境条件下参与一系列功能。与其他自由基分子一样，NO的生物学作用取决于其细胞浓度，在低浓度产生时作为信号分子，而在产生足够高的水平以引发硝基氧化应激时导致细胞损伤。在过去十年中，在表征NO代谢和作用机制方面取得了重大进展，揭示了多种生物合成途径可以在植物中产生这种自由基，并且其作用主要通过靶蛋白的翻译后修饰（硝化和S-亚硝基化）发生。已经描述了NO与其他信号分子之间复杂的串扰网络，涉及植物激素、其他第二信使和关键转录因子。本综述将重点关注我们目前对非生物胁迫条件下NO与植物激素和其他植物生长调节剂相互作用的理解。
