时间：2017年8月31日上午9:00
地点：3号会议室
报告题目：OsFTIP1 Regulation of Florigen Transport in Rice
报告人：宋士勇，博士，新加坡国立大学。
请全体研究生准时参加，提前15分钟到场签到。
报告人简介：
宋士勇，生于1986年，2013年毕业于中国科学院植物研究所，获博士学位。2012-至今先后在新加坡国立大学任Research Assistant 和Research Fellow。主要以拟南芥、水稻和苜蓿等为研究对象，利用基因编辑和分子蛋白相关技术，研究一些控制产量、穗型、抗逆和花期等重要农艺性状的分子机制。研究成果先后以第一作者和共同作者发表在Plant Cell、Developmental Cell和JXB等国际主流杂志上，被引用近三百余次。
报告内容简介：
Flowering time is a critical agronomic trait that determines successful seed production and adaptation of crop plants. Photoperiodic control of this process in flowering plants is mediated by the long-distance mobile signal called florigen partly encoded by FLOWERING LOCUS T (FT) in Arabidopsis and its orthologs in other plant species. Despite the progress in understanding FT transport in the dicot model Arabidopsis, the mechanisms of florigen transport in monocots, which provide the majority of the biomass in agriculture, are still largely unknown. In this talk I will describe that rice FT-INTERACTING PROTEIN 1 (OsFTIP1), is required for export of RICE FLOWERING LOCUS T 1 (RFT1) from companion cells to sieve elements. This affects RFT1 movement to the shoot apical meristem and its regulation of rice flowering time under long days. I will further discuss that a ubiquitin-like domain kinase γ4, OsUbDKγ4, interacts with OsFTIP1, and modulates its degradation in leaves through the 26S proteasome, which in turn affects RFT1 transport to the SAM. I will discuss the dynamic modulation of OsFTIP1 abundance in leaves is integral to OsFTIP1 effect on mediating RFT1 transport in rice, and the conserved role of FTIP1-like MCTPs in mediating florigen transport in flowering plants.
