SOC1调控植物开花时间的分子机制  

Molecular mechanism of flowering time regulate by SOC1

作　　者：齐联联 宿强 张珂 QI Lianlian;XU Qiang;ZHANG Ke(School of Grassland Science,Beijing Forestry University,Beijing 100083,China;Forestry and Grassland Administration of Qitaihe,Qitaihe 154600,Heilongjiang,China)

机构地区：[1]北京林业大学草业与草原学院,北京100083 [2]七台河市林业和草原局,黑龙江七台河154600

出　　处：《草业科学》2022年第1期149-160,共12页Pratacultural Science

摘　　要：SUPPRESSOR OF OVEREXPRESSION OF CO 1(SOC1)编码MADS-box转录因子,具有诱导植物成花、防止花分生组织过早成熟和调控花器官发育的重要功能,是调控植物开花的整合因子。SOC1转录因子受蛋白或核酸调控,或与其他转录因子形成复合物进入细胞核,靶向特异开花基因从而调控植物开花,其调控网络十分复杂。本研究主要分析SOC1及其编码蛋白的结构特征,预测SOC1的蛋白互作网络,并阐明SOC1调控植物开花时间的分子机制,SOC1的表达受FT、CO、FLC及其同源基因MAFs、SVP、SPL和AGL24的直接调控,并受DELLA、miR156、miR172、AP2类转录因子、MYC3蛋白及营养物质信号的间接调控,且与AGL24形成二聚体上调下游花分生组织基因LFY的表达来调控植物的开花诱导过程,为今后研究SOC1调控其他植物的开花时间提供参考。SUPPRESOR OF OVEREXPRESSION OF CO 1(SOC1)encodes the MADS-box transcription factor,which has important functions of inducing flowering in plants,preventing premature maturation of floral meristems,and regulating the development of floral organs by integrating flowering signals.SOC1 transcription factor is regulated by proteins or nucleic acids,forms a complex with other transcription factors to enter the nucleus,targets flowering genes to regulate flowering time,and has a complex flowering time regulatory network.This study mainly analyzed the structural characteristics of SOC1 and its protein,predicted the protein interaction network of SOC1,and mainly reviewed the molecular mechanism of SOC1 regulation of flowering time.Results showed that SOC1 was directly regulated by FT,CO,FLC,MAFs,SVPs,SPL,and AGL24 and indirectly regulated by DELLA,miR156,miR172,AP2,MYC3,and nutrient signals.SOC1 formed a dimer with AGL24 to upregulate LFY expression to accelerate flowering induction in plants.Results of this study provide a reference for future research on how SOC1 regulate the flowering time of other plants.

关 键 词：SOC1 结构特征 成花诱导 开花时间 蛋白互作 转录调控 调控网络 

分 类 号：Q943.2[生物学—植物学]