A transcription factor coordinating internode elongation and photoperiodic signals in rice

First author: Jorge Gómez-Ariza; Affiliations: University of Milan (米兰大学): Milan, Italy

Corresponding author: Fabio Fornara 

In several plant species, inflorescence formation is accompanied by stem elongation. Both processes are accelerated in rice upon perception of shortening days. Here, we show that PREMATURE INTERNODE ELONGATION 1 (PINE1), encoding a rice zinc-finger transcription factor, reduces the sensitivity of the stem to gibberellin (GA). The florigens reduce PINE1 expression to increase stem responsiveness to GA and promote flowering. These data indicate the existence of a regulatory network coordinating flowering and GA-dependent growth.

在某些植物物种中，花序的形成伴随着茎秆的伸长。这两个生物学进程在水稻感知到短日照时同时被促进。本文的研究显示一个水稻编码锌指转录因子的基因PINE1能够降低水稻茎秆对于赤霉素的敏感性。成花素会降低PINE1的表达以增强茎秆对于赤霉素的响应，并促进开花。本文的试验数据揭示了一个协调植物开花和依赖于赤霉素的植物生长的调控网络。

通讯：K.H.Ten Tusscher (http://www.unimi.it/chiedove/ENG/schedaPersonaXML.jsp?matricola=17548)

个人简介：1994-2000年，米兰大学，农学学士；2000-2005年，米兰大学，植物生物学博士。

研究方向：水稻生殖发育与环境信号之间互作的调控网络；水稻适应高纬度的分子机制。

doi: https://doi.org/10.1038/s41477-019-0401-4

Journal: Nature Plants

Published date: April 01, 2019