生物技术通报2025，Vol.41Issue(7)：37-48,12.DOI:10.13560/j.cnki.biotech.bull.1985.2024-1061
褪黑素在植物低温胁迫中的研究进展
Research Progress in Melatonin in Plant Low-temperature Stress
摘要
Abstract
Melatonin(MT),an indoleamine bioactive molecule prevalent in plants,has recently emerged as a focal point of research concerning its molecular mechanisms in plant responses to abiotic stress.This paper provides a comprehensive review of the latest advancements in understanding melatonin's role in plant responses to low-temperature stress,with a particular emphasis on its molecular mechanisms for enhancing cold tolerance through multidimensional regulation.Physiologically,melatonin mitigates low-temperature-induced membrane lipid peroxidation and photoinhibition by stabilizing cell membrane lipid bilayers,safeguarding photosystem Ⅱ reaction centers,and scavenging excess reactive oxygen species(ROS).At the molecular level,melatonin enhances plant low-temperature tolerance through a complex signaling network:it activates the ICE1-CBF-COR transcriptional cascade to upregulate cold-responsive genes;transmits stress signals via receptor-mediated pathways;regulates the dynamics of secondary messengers such as Ca2+,NO,and H2O2;interacts with plant hormones(e.g.,abscisic acid(ABA),jasmonic acid(JA),indole-3-acetic acid(IAA))to form signaling networks;and triggers mitogen-activated protein kinase(MAPK)and calcium-dependent protein kinase(CDPK)cascades to amplify low-temperature stress signals.Melatonin holds significant potential for application in enhancing plant tolerance to low temperatures.The exogenous application of melatonin has been shown to enhance crop tolerance to low temperatures,while augmenting endogenous melatonin synthesis through gene editing represents a crucial strategy for improving crop resistance to low-temperature stress.Future research should adopt multidisciplinary approaches to investigate the role and potential applications of melatonin in plant responses to low-temperature stress,thereby facilitating the development of crop varieties with enhanced low-temperature tolerance.关键词
褪黑素/低温胁迫/植物/分子机制/抗逆性Key words
melatonin/low-temperature stress/plant/molecular mechanism/resistance to stress引用本文复制引用
林佳怡,陈强,张磊,刘宏鑫,郑晓明,逄洪波..褪黑素在植物低温胁迫中的研究进展[J].生物技术通报,2025,41(7):37-48,12.基金项目
国家自然科学基金国际地区合作与交流项目(32261143465),国家自然科学基金专项项目(32341026),辽宁省属本科高校基本科研业务费创新团队支持计划专项(LJ202410166052),沈阳师范大学"百人计划"拔尖人才项目(SSDBRJH2002012) （32261143465）
