作者
Donald P Fraser, Scott Hayes, Keara A Franklin
发表日期
2016/10/1
来源
Current opinion in plant biology
卷号
33
页码范围
1-7
出版商
Elsevier Current Trends
简介
Highlights
- Red/far-red, blue and UV-B photoreceptors converge on a shared signalling network.
- PIFs integrate different light signals to control stem elongation.
- PIFs regulate multiple hormone signalling pathways.
- Multiple negative regulators inactivate PIFs to constrain shade avoidance.
Plants integrate a variety of environmental signals to determine the threat of competitor shading and use this information to initiate escape responses, termed shade avoidance. Photoreceptor-mediated light signals are central to this process. Encroaching vegetation is sensed as a reduction in the ratio of red to far-red wavebands (R: FR) by phytochromes. Plants shaded within a canopy will also perceive reduced blue light signals and possibly enriched green light through cryptochromes. The detection of canopy gaps may be further facilitated by blue light sensing phototropins and the UV-B photoreceptor, UVR8. Once sunlight has …
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DP Fraser, S Hayes, KA Franklin - Current opinion in plant biology, 2016