《植物生理学报》 2013, 49(9): 861-868

光周期途径核心因子CO的开花调控机制

杨修勤, 汤青林*, 宋明*, 王志敏

西南大学园艺园林学院, 南方山地园艺学教育部重点实验室, 重庆市蔬菜学重点实验室, 重庆400715

通信作者：汤青林；E-mail: swutql@163.com, swausongm@163.com；Tel: 023-68250227; 023-68251093

摘　要：

CONSTANS (CO)基因是生物钟和开花时间基因之间监测日照长度的重要元件, 在光周期途径中发挥核心功能。CO可以整合光信号和生物钟信号, 诱导开花途径整合子FLOWERING LOCUS T (FT)和SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1)的表达, 进而促进植株开花。本文综述CO基因的开花调控机制, 并结合CO基因的研究现状展望了其未来的研究方向。

关键词：光周期途径; 开花调控; CO

收稿：2013-04-28   修定：2013-08-22

资助：国家重点基础研究发展计划“973”项目(2012CB113900)、国家自然科学基金(31000908)、重庆市自然科学基金重点项目(2011BA1002)、中央高校基本科研业务费专项(XDJK2012B020)。

Flowering Control Mechanism of CO as a Key Factor in Photoperiod Pathway

YANG Xiu-Qin , TANG Qing-Lin*, SONG Ming*, WANG Zhi-Min

College of Horticulture and Landscape Architecture, Southwest University; Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education; Key Laboratory of Olericulture in Chongqing, Chongqing 400715, China

Corresponding author: TANG Qing-Lin; E-mail: swutql@163.com, swausongm@163.com; Tel: 023-68250227; 023-68251093

Abstract:

CONSTANS (CO) gene plays a central role in the photoperiod pathway and it is one of the important components between circadian clock and flowering-time genes to measure the day-length. CO can integrate the signals of light and circadian clock, which can induce the expression of the flowering integrators FLOWERING LOCUS T (FT) and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1), and then promotes to flower. This paper summarizes the flowering control mechanism of CO gene and also reviews the prospects of future researches according to present research status on CO gene.

Key words: photoperiod pathway; flowering control; CO