Light-regulated gene repositioning in Arabidopsis.
作者： Chun-Miao Feng , Yongjian Qiu , Elise K. Van Buskirk , Emily J. Yang , Meng Chen
DOI: 10.1038/NCOMMS4027
关键词:
摘要: Plant genomes are extremely sensitive to, and can be developmentally reprogrammed by environmental light cues. Here using rolling-circle amplification of gene-specific circularizable oligonucleotides coupled with fluorescence in situ hybridization, we demonstrate that triggers a rapid repositioning the Arabidopsis light-inducible chlorophyll a/b-binding proteins (CAB) locus from nuclear interior to periphery during its transcriptional activation. CAB is mediated red/far-red photoreceptors phytochromes (PHYs) inhibited repressors PHY signalling, including COP1, DET1 PIFs. appears separate regulatory step occurring before full Moreover, loci RBCS, PC GUN5 undergo similar behaviour their Our study supports light-dependent gene mechanism which PHYs activate relocating them periphery; it also provides evidence for biological importance positioning plant kingdom.
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