時間：2017年8月31日上午9:00
地點：3號會議室
報告題目：OsFTIP1 Regulation of Florigen Transport in Rice
報告人：宋士勇，博士，新加坡國立大學。
請全體研究生準時參加，提前15分鐘到場簽到。
報告人簡介：
宋士勇，生于1986年，2013年畢業于中國科學院植物研究所，獲博士學位。2012-至今先后在新加坡國立大學任Research Assistant 和Research Fellow。主要以擬南芥、水稻和苜蓿等為研究對象，利用基因編輯和分子蛋白相關技術，研究一些控制產量、穗型、抗逆和花期等重要農藝性狀的分子機制。研究成果先后以第一作者和共同作者發表在Plant Cell、Developmental Cell和JXB等國際主流雜志上，被引用近三百余次。
報告內容簡介：
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.
