PDF(Pubmed)
Abstract：
Melatonin is a ubiquitous regulator in plants and performs a variety of physiological roles, including resistance to abiotic stress, regulation of growth and development, and enhancement of plant immunity. Melatonin exhibits the characteristics of a phytohormone with its pleiotropic effects, biosynthesis, conjugation, catabolism, effective concentration, and the shape and location of its dose-response curves. In addition, CAND2/PMTR1, a phytomelatonin receptor candidate belonging to the G protein-coupled receptors (GPCRs), supports the concept of melatonin as a phytohormone. However, the biochemistry of plant melatonin receptors needs to be further characterized. In particular, some of the experimental findings to date cannot be explained by known GPCR signaling mechanisms, so further studies are needed to explore the possibility of novel signaling mechanisms.
摘要：
褪黑素是植物中普遍存在的调节因子,具有多种生理作用,包括对非生物胁迫的抗性，生长和发育的调节，增强植物免疫力。褪黑激素具有植物激素的多效性，生物合成，共轭，分解代谢，有效浓度,以及其剂量反应曲线的形状和位置。此外,CAND2/PMTR1，一种属于G蛋白偶联受体（GPCRs）的植物褪黑素受体候选物，支持褪黑激素作为植物激素的概念。然而,植物褪黑素受体的生物化学需要进一步表征。特别是,迄今为止的一些实验结果不能用已知的GPCR信号机制来解释，因此，需要进一步的研究来探索新的信号机制的可能性。
