Max-Planck Institute for Molecular Plant Physiology, Potsdam-Golm, Germany.
Plant Signal Behav. 2011 Dec;6(12):1987-92. doi: 10.4161/psb.6.12.18240.
In order to adapt to environmental changes of light species and intensity, higher plants furnish complicate signaling systems such as the UVR/COP/HY5 cascade which links several diverse classes of photoreceptors. In addition UV-B light provokes accelerated production of UV-B protectants such as flavonoids and vitamins. Following intensive research efforts, genes in the UV-B signaling cascade have been characterized via forward genetics approaches following mutant screens relying on sensitivity to UV-B irradiation. However detailed processes of the linkage between light signaling and the upregulation of metabolite accumulation remain unclear. Here we review both the light signal cascades and metabolite pathways responding to UV-B exposure. Finally we generate co-expression network analysis using published data in order to find novel candidate genes which link light signaling and transcriptional regulation to metabolic biosynthesis in attempt to describe how these processes are interlinked.
为了适应光质和光强的环境变化，高等植物提供了复杂的信号系统，如 UVR/COP/HY5 级联反应，该级联反应连接了几种不同类型的光受体。此外，UV-B 光会促使黄酮类和维生素等 UV-B 保护剂的加速产生。经过大量的研究努力，通过依赖于对 UV-B 照射的敏感性的突变体筛选的正向遗传学方法，已经对 UV-B 信号级联中的基因进行了特征描述。然而，光信号与代谢物积累的上调之间的联系的详细过程仍不清楚。在这里，我们回顾了响应 UV-B 暴露的光信号级联和代谢物途径。最后，我们使用已发表的数据生成共表达网络分析，以找到将光信号和转录调控与代谢生物合成联系起来的新的候选基因，以描述这些过程是如何相互关联的。
