Tripathi Durgesh K, Bhat Javaid A, Ahmad Parvaiz, Allakhverdiev Suleyman I
Crop Nanobiology and Molecular Stress Physiology Lab, Amity Institute of Organic Agriculture (AIOA), Amity University, Noida, Uttar Pradesh, India.
International Genome Center, Jiangsu University, Zhenjiang 212013, PR China.
Funct Plant Biol. 2023 Feb;50(2):i-iv. doi: 10.1071/FP22170.
Polyamines (PAs) and nitric oxide (NO) are crucial signalling molecules that exhibit a promising role in improving stress tolerance in plants, maintaining their growth and development. They act as protecting agents for plants through activation of stress adaptation strategies such as membrane stabilisation, acid neutralisation and suppression of ROS generation. NO interacts with PAs during several developmental processes and stress responses. External supplementation of PAs to plants is also reported to cause an increase in NO content. However, it is unclear whether PAs promote synthesis of NO by either as substrates, cofactors, or signals. Impact of NO on synthesis of PAs has been also reported in some studies, yet the exact governing mechanisms of the interrelation between NO and PAs is currently obscure. Understanding the crosstalk between PAs and NO during growth and stress condition in plants can aid in providing better tolerance to plants against stressful environment.
多胺（PAs）和一氧化氮（NO）是关键的信号分子，在提高植物的胁迫耐受性、维持其生长发育方面发挥着重要作用。它们通过激活膜稳定、酸碱中和和抑制活性氧生成等胁迫适应策略，充当植物的保护剂。在多个发育过程和胁迫反应中，NO与PAs相互作用。据报道，向植物外部补充PAs也会导致NO含量增加。然而，尚不清楚PAs是作为底物、辅因子还是信号促进NO的合成。一些研究也报道了NO对PAs合成的影响，但目前NO与PAs之间相互关系的确切调控机制尚不清楚。了解植物生长和胁迫条件下PAs与NO之间的相互作用，有助于提高植物对胁迫环境的耐受性。
