Signalling and gene regulation in response to ultraviolet light

被引:164
作者
Ulm, R
Nagy, F
机构
[1] Univ Freiburg, Inst Biol Bot 2, D-79104 Freiburg, Germany
[2] Biol Res Ctr, Inst Plant Biol, H-6726 Szeged, Hungary
关键词
D O I
10.1016/j.pbi.2005.07.004
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In contrast to phytochrome-, cryptochrome- and phototropinsensing systems, about which considerable knowledge has accumulated, the ultraviolet-B (UVB) photoreceptor is not yet known at the molecular level. Information about the downstream signalling events that underlie UVB-provoked physiological responses is limited. Recent whole-genome transcript profiling, isolation of mutants that are impaired in specific UVB-induced responses and detailed photobiological studies suggest that responses that are triggered by shorter wavelength UVB and longer wavelength UVB are mediated by two different sensory systems. The bZIP transcription factor HY5 was recently identified as an important player in the long-wavelength UVB-induced signal transduction cascade. Advances in the development of luciferase-reporter lines will make it feasible to perform high-throughput genetic screens to isolate novel mutants that are impaired in sensing or transducing signals downstream of the putative UVB photoreceptor(s).
引用
收藏
页码:477 / 482
页数:6
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