【摘 要】
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Arabidopsis uses two major classes of photoreceptors to mediate seedling de-etiolation.The cryptochromes(cry1 andcry2)absorb blue/ultraviolet-A light,whereas th
【出 处】
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2014年全国功能基因组学学术峰会
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Arabidopsis uses two major classes of photoreceptors to mediate seedling de-etiolation.The cryptochromes(cry1 andcry2)absorb blue/ultraviolet-A light,whereas the phytochromes(phyA-phyE)predominantly regulate responses to red/far-red light.Arabidopsis COP1 represses light signaling by acting as an E3 ubiquitin ligase in the nucleus,and is responsible for targeted degradation of a number of photomorphogenesis-promoting factors,including HY5,LAF1.phyA,and HFR1.Distinct light signaling pathways initiated by multiple photoreceptors(including both phytochromes and cryptochromes)eventually converge on COP1,causing its inactivation and nuclear depletion.
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