National Key Laboratory of Plant Molecular Genetics (NKLPMG), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology (SIPPE), Chinese Academy of Sciences, Shanghai, 200032, China.
University of Chinese Academy of Sciences, Shanghai, 200032, China.
New Phytol. 2019 Feb;221(3):1247-1252. doi: 10.1111/nph.15469. Epub 2018 Oct 13.
Contents Summary 1247 I. Introduction 1247 II. The UVR8-COP1 pathway 1248 III. The UVR8-WRKY36 pathway 1248 IV. The UVR8-BES1/BIM1 pathway 1249 V. Other pathways 1250 VI. Conclusion and perspectives 1250 Acknowledgements 1251 References 1251 SUMMARY: Ultraviolet-B (UV-B) light is an intrinsic part of sunlight that has significant effects on plant development and acclimation responses. UVR8 (UV Resistance Locus 8) is the long sought-after UV-B photoreceptor that mediates UV-B light perception and signal transduction. UV-B irradiation induces the monomerization and nuclear accumulation of UVR8 in plant cells to activate the UV-B signaling pathway. The photoactivated UVR8 could transduce UV-B signal via multiple mechanisms to regulate transcription and plant growth. Here, we summarize current understanding of UVR8-mediated UV-B signal transduction pathways, including UVR8-COP1 (CONSTITUTIVELY PHOTOMORPHOGENIC 1) and UVR8-WRKY36 (WRKY DNA-BINDING PROTEIN 36), UVR8-BES1 (BRI1-EMS-SUPPRESSOR1) and BIM1 (BES1-INTERACTING MYC-LIKE 1).
内容摘要 1247 I. 引言 1247 II. UVR8-COP1 途径 1248 III. UVR8-WRKY36 途径 1248 IV. UVR8-BES1/BIM1 途径 1249 V. 其他途径 1250 VI. 结论和展望 1250 致谢 1251 参考文献 1251 摘要：紫外线-B（UV-B）光是阳光的固有组成部分，对植物发育和适应反应有重大影响。UVR8（UV 抵抗基因 8）是长期以来寻找的介导 UV-B 光感知和信号转导的 UV-B 光受体。UV-B 辐射诱导 UVR8 在植物细胞中的单体化和核积累，以激活 UV-B 信号通路。光激活的 UVR8 可以通过多种机制传递 UV-B 信号，调节转录和植物生长。在这里，我们总结了当前对 UVR8 介导的 UV-B 信号转导途径的理解，包括 UVR8-COP1（组成型光形态建成 1）和 UVR8-WRKY36（WRKY DNA 结合蛋白 36）、UVR8-BES1（BRI1-EMS-抑制子 1）和 BIM1（BES1 相互作用的 MYC 样蛋白 1）。
