Article
Arabidopsis phytochrome B promotes SPA1 nuclear accumulation to repress photomorphogenesis under far-red light.
The Plant cell - 1 Jan 2013
Zheng Xu, Wu Suowei, Zhai Huqu, Zhou Peng, Song Meifang, Su Liang, Xi Yulin, Li Zhiyong, Cai Yingfan, Meng Fanhua, Yang Li, Wang Haiyang, Yang Jianping
Abstract excerpt
Phytochrome A (phyA) is the primary photoreceptor mediating deetiolation under far-red (FR) light, whereas phyB predominantly regulates light responses in red light. SUPPRESSOR OF PHYA-105 (SPA1) forms an E3 ubiquitin ligase complex with CONSTITUTIVE PHOTOMORPHOGENIC1 (COP1), which is responsible for the degradation of various photomorphogenesis-promoting factors, resulting in desensitization to light signaling....
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