Plant UV-B photoreceptor signalling

紫外线-B（UV-B）辐射是太阳光中一种微小但能量很大的成分。暴露于紫外线B波长（280-315纳米）对植物有许多影响，包括新陈代谢和发育的变化。重要的是，UV-B刺激植物的反应，保护它们免受UV-B暴露的潜在破坏性后果。UV-B的影响是由于它能够调节许多植物基因的表达，包括那些参与紫外线保护、生物合成和叶绿体功能的基因。然而，人们对植物如何感知UV-B以及它如何引发反应知之甚少。参与这些过程的第一个成分已经被鉴定出来，一种叫做UVR 8的蛋白质。UVR 8作为光感受器来检测UV-B光。UVR 8与另一种蛋白质COP 1相互作用，启动植物对UV-B的反应。该项目的目的是加强对UVR 8和COP 1调节植物反应的过程的理解。建立植物感受UV-B的分子机制将有助于我们了解UV-B如何调节植物的生长和发育以及植物如何在阳光下生存。

Ultraviolet-B (UV-B) radiation is a minor but very energetic component of sunlight. Exposure to UV-B wavelengths (280-315 nm) has numerous effects on plants, including changes in metabolism and development. Importantly, UV-B stimulates responses in plants that protect them against the potentially damaging consequences of UV-B exposure. The effects of UV-B are due to its ability to regulate the expression of numerous plant genes, including those involved in UV-protection, biosynthesis and chloroplast function. However, little is known about how UV-B is perceived by plants and how it initiates responses. The first component involved in these processes has been identified, a protein called UVR8. UVR8 acts as a photoreceptor to detect UV-B light. UVR8 interacts with another protein, COP1, to initiate responses to UV-B in plants. The aim of this project is to enhance understanding of the processes through which UVR8 and COP1 function to regulate plant responses. Establishing the molecular mechanisms of plant UV-B perception will help us to understand how UV-B regulates aspects of plant growth and development and how plants survive in sunlight.