期刊
JOURNAL OF PLANT BIOLOGY
卷 59, 期 3, 页码 223-230出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s12374-016-0155-8
关键词
Arabidopsis; COP1; HY5; UV-B; UVR8
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2014R1A1A2054875]
- Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries (IPET) through Agri-Bio industry Technology Development Program - Ministry of Agriculture, Food and Rural Affairs (MAFRA) [115081-2]
Plants experience a variety of environmental stresses such as cold, drought, freezing, flooding, wounding, heat and UV-B, all of which result in decreased productivity. Among abiotic stresses, UV-B stress is considered to be a critical factor affecting the rate of plant growth because the amount of UV-B reaching the Earth's surface is constantly increasing. While high fluence rates of UV-B trigger stress-related processes, low fluence rates of UV-B induce photomorphogenesis, a crucial developmental process at the early seedling stage in plants. Among the signaling components involved in UV-B-mediated cellular response, a clade composed of UVR8-COP1-HY5 has been shown to be a central sequence that effectively transduces the pathway from the primary signal to adaptation response. This review summarizes the most recent progress in studies of UVR8-COP1-HY5 as the key players participating in the UV-B signal transduction pathway. The current understanding of additional UV-B signaling components including substrate receptors of multi-subunit E3 ubiquitin ligase is also discussed.
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