作物学报2024，Vol.50Issue(1)：1-15,15.DOI:10.3724/SP.J.1006.2024.34012
种子休眠与萌发调控的研究进展
Research progress of seed dormancy and germination regulation
摘要
Abstract
Dormancy enables plant seeds to time germination until environmental conditions become favorable for seedling survival and growth.The dormancy characteristics of seeds are of important ecological adaptive significance and notable agricultural value.Phytohormone abscisic acid(ABA)and gibberellin(GA)are the key factors for seed dormancy and germination.Mature seeds in dormancy state contain high levels of ABA and low levels of GA.ABA induces and maintains seed dormancy,while GA antagonizes ABA and promotes seed germination.DELAY OF GERMINATION-1(DOG1)is a major regulator of seed dormancy and had a syn-ergistic effect with ABA to delay germination.DOG1 enhances ABA signal transduction by combining with PP2C ABA hypersensi-tive germination(AHG1/AHG3),and inhibits the action of AHG1 to increase ABA sensitivity and impose seed dormancy.Imprinted genes are regulated by epigenetic mechanisms before and after fertilization,and are closely related to the establishment and release of seed dormancy.In recent years,remarkable progress has been made in the regulation of seed dormancy.In the present paper,we re-viewed the effects of phytohormones ABA and GA on seed dormancy and germination,the action mechanism regulating seed dor-mancy by DOG1,and the epigenetic regulation of seed dormancy and germination.In addition,we also propose some scientific issues that need to be further investigated in this field to provide some information for understanding the molecular mechanism of seed dor-mancy and germination,breeding in anti-preharvest sprouting in crop plants,and promoting the germination of dormant seeds.关键词
DOG1/表观遗传/分子机制/植物激素/种子休眠Key words
DOG1/epigenetic/molecular mechanism/phytohormone/seed dormancy引用本文复制引用
宋松泉,唐翠芳,雷华平,姜孝成,王伟青,程红焱..种子休眠与萌发调控的研究进展[J].作物学报,2024,50(1):1-15,15.基金项目
本研究由国家科技支撑计划项目(2012BAC01B05),郴州国家可持续发展议程创新示范区建设省级专项(2022sfq06)和郴州市人民政府和湘南学院人才项目资助. This study was supported by the National Key Technology Support Program of China(2012BAC01B05),the Provincial Special Project of Chenzhou National Sustainable Development Agenda Innovation Demonstration Zone Construction(2022sfq06),and the Chenzhou Munici-pal People's Government and Xiangnan University Talent Project. （2012BAC01B05）
