植物研究2026，Vol.46Issue(1)：1-12,12.DOI:10.7525/j.issn.1673-5102.2026.01.001
滞绿基因SGR研究进展
Progress in the Study on Stay-green Gene SGR
摘要
Abstract
The STAY-GREEN(SGR)gene family is a key regulator of chlorophyll degradation and leaf senescence in plants.This study,through systematic phylogenetic analysis,demonstrated that the SGR gene family can be divided into two functionally divergent subfamilies,SGR and SGRL.The number of family members varied among species,yet the protein structure was highly conserved.Functional studies revealed that SGR not only played a central role in plant growth and development by regulating chlorophyll degradation but also extensively participated in responses to abiotic and biotic stresses,often in a gene-specific manner.At the molecular level,SGR gene served as a hub integrating multiple hormone signals,including abscisic acid,ethylene,and jasmonic acid,and coordinated chlorophyll degradation and stress responses by modulating the homeostasis of reactive oxygen species and phenylpropane metabolism pathways.This article reviewed the complex regulatory network mediated by SGR gene,providing important theoretical foundations and research directions for elucidating its molecular mechanisms and for targeted improvement of crop stress resistance and agricultural product quality using gene-editing technologies.关键词
滞绿基因家族/叶绿素代谢/激素信号/活性氧/苯丙烷代谢Key words
Stay-Green gene family/chlorophyll metabolism/hormone signal/reactive oxygen species/phenylpropane metabolism分类
生物科学引用本文复制引用
何林林,吴磊,任雪松,司军,李勤菲,宋洪元..滞绿基因SGR研究进展[J].植物研究,2026,46(1):1-12,12.基金项目
重庆市研究生科研创新项目(CYS240164) （CYS240164）
中央高校基本科研业务费专项资金资助项目(Swu-XDJH202310) （Swu-XDJH202310）
重庆市技术创新与应用发展专项重点项目(CSTB2023TIAD-KPX0025). （CSTB2023TIAD-KPX0025）
