Integrating UV-B signalling in to plant photomorphogenesis networks

将 UV-B 信号整合到植物光形态发生网络中

基本信息

批准号：
BB/M008711/1
负责人：
Keara Franklin
金额：
$ 52.91万
依托单位：
University of Bristol
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=BB%2FM008711%2F1
关键词：
Integrating UV signalling plant photomorphogenesis

项目摘要

In addition to supplying energy for photosynthesis, light provides plants with important spatial and seasonal information. Light signals are perceived by specialised photoreceptors, which include the red and far-red light-absorbing phytochromes and the blue light-absorbing cryptochromes. Although a minor component of sunlight, UV-B radiation (280-315 nm) is a major regulator of plant metabolism and development. The much sought-after UV-B photoreceptor has recently been identified as the 7-bladed propeller protein, UVR8. Although plants perceive the full sunlight spectrum, UV-B signalling has traditionally been studied in isolation from other photoreceptor networks. The dwarf phenotype of UV-B-treated plants is well-established but the molecular mechanisms underpinning this striking developmental adaptation are unknown. Our recent work has identified a novel molecular mechanism through which UV-B regulates plant architecture, via direct crosstalk with phytochrome and cryptochrome signalling pathways. The proposed research programme will build on these exciting findings to gain deeper molecular understanding of sunlight signalling in plants. More specifically, we aim to understand how UV-B perceived by UVR8 controls the agriculturally-important shade avoidance response.

除了提供光合作用的能量外，光还为植物提供了重要的空间和季节性信息。光信号由专门的光感受器感知到，其中包括红色和远红色的浅色植物色素和蓝色的浅色隐形染色。尽管UV-B辐射（280-315 nm）是阳光的次要组成部分，是植物代谢和发育的主要调节剂。备受追捧的UV-B光感受器最近被鉴定为7叶螺旋桨蛋白UVR8。尽管植物感知到了全阳光光谱，但传统上已经从其他光感受器网络隔离研究了UV-B信号传导。 UV-B处理的植物的矮人表型是良好的，但是基于这种引人注目的发育适应的分子机制尚不清楚。我们最近的工作确定了一种新颖的分子机制，通过该机制通过植物色素和加密质体信号通路通过直接串扰来调节植物结构。拟议的研究计划将基于这些令人兴奋的发现，以获得对植物中阳光信号传导的更深入的分子理解。更具体地说，我们旨在了解UV-B 8如何控制农业重要的阴影避免响应。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

ELONGATED HYPOCOTYL5 (HY5) and HY5 HOMOLOGUE (HYH) maintain shade avoidance suppression in UV-B.

ELONGATED HYPOCOTYL5 (HY5) 和 HY5 同源物 (HYH) 在 UV-B 中保持避荫抑制。

DOI：
10.1111/tpj.16328
发表时间：
2023
期刊：
for cell and molecular biology
影响因子：
0
作者：
Sharma A
通讯作者：
Sharma A

UV-B Perceived by the UVR8 Photoreceptor Inhibits Plant Thermomorphogenesis.

DOI：
10.1016/j.cub.2016.11.004
发表时间：
2017-01-09
期刊：
Current biology : CB
影响因子：
0
作者：
Hayes S;Sharma A;Fraser DP;Trevisan M;Cragg-Barber CK;Tavridou E;Fankhauser C;Jenkins GI;Franklin KA
通讯作者：
Franklin KA

UV-B antagonises shade avoidance and increases levels of the flavonoid quercetin in coriander (Coriandrum sativum).