植物DELLA蛋白家族研究进展  

Progress in research on plant DELLA family proteins

作　　者：赵春丽 王晓 陈家兰 陈何 王乐 赖钟雄[1] 刘生财[1] ZHAO Chunli;WANG Xiao;CHEN Jialan;CHEN He;WANG Le;LAI Zhongxiong;LIU Shengcai(Institute of Horticultural Biotechnology,Fujian Agriculture and Forestry University,Fuzhou 350002,China)

机构地区：[1]福建农林大学园艺植物生物工程研究所,福州350002

出　　处：《应用与环境生物学报》2020年第5期1299-1308,共10页Chinese Journal of Applied and Environmental Biology

基　　金：福建省自然科学基金项目(2018J01700);福建农林大学科技创新专项基金项目(CXZX2017174,CXZX2016118,CXZX2017189);福建省高原学科建设经费(102/71201801101)资助。

摘　　要：植物生长发育受外界环境和激素的影响,DELLA蛋白是多种激素信号和环境信号系统反应的整合因子,因此DELLA蛋白研究逐渐成为一个热点.从DELLA蛋白的基本特征、参与激素信号和环境信号的转导、调控植物生长发育及次生代谢产物合成等方面进行系统阐述,以期为深入研究DELLA蛋白调控植物生长发育的分子机制及在农业生产上的利用提供参考.(1)多种激素都可以调控DELLA蛋白基因的表达,且大多数激素对DELLA蛋白的调控通过影响GAs的信号转导来起作用.(2)环境胁迫(干旱、盐、低温、缺磷、缺氮)能够阻碍植物的生长发育,此时DELLA蛋白抑制植物的生长发育,可以增强植物对逆境胁迫的抗性.(3)DELLA蛋白通过响应环境信号和激素信号来调控植物种子萌发、株高、花期、果实品质、作物产量和次生代谢产物合成.DELLA蛋白在未来现代化的农业生产中具有广阔的应用前景;外界因子通过调控DELLA蛋白基因的表达来调控植物生长发育,但DELLA蛋白调控植物生长发育的分子机制还不清晰尚需深入研究.(图2参129)Plant growth and development are affected by the external environment and hormones. As a factor integrating various hormone signals and environmental signaling system reactions, DELLA protein is becoming a hot research topic. This paper expatiates on the essential characteristics of DELLA protein, its involvement in the transduction of hormone and environmental signals, the regulation of plant growth and development, and the synthesis of secondary metabolites. The results provide a reference for further study on the molecular mechanisms of plant growth and development through DELLA protein regulation and its utilization in agricultural production. The results showed that:(1) Many hormones can regulate the expression of the DELLA protein gene. Most hormones regulate DELLA protein by affecting the GAs signal transduction.(2) Environmental stress, including drought, salt, low temperature, phosphorus deficiency, and nitrogen deficiency, can hinder plant growth and development. At this time, DELLA protein can inhibit plant growth and development and enhance the resistance to stress.(3) DELLA protein regulates plant seed germination, plant height, flowering stage, fruit quality, yield, and secondary metabolite synthesis by responding to environmental and hormone signals. Therefore, DELLA protein has the potential for broad application in future agricultural production. Although this study has verified the external factors regulating the DELLA protein gene expression for the control of plant growth and development, the molecular mechanism is still unclear and requires further research.

关 键 词：DELLA蛋白 信号转导 生长发育 次生代谢 

分 类 号：Q946[生物学—植物学]