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Light-regulated gene repositioning in Arabidopsis

Author

Listed:
  • Chun-Miao Feng

    (Duke University)

  • Yongjian Qiu

    (Duke University)

  • Elise K. Van Buskirk

    (Duke University)

  • Emily J. Yang

    (Duke University)

  • Meng Chen

    (Duke University)

Abstract

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 light triggers a rapid repositioning of the Arabidopsis light-inducible chlorophyll a/b-binding proteins (CAB) locus from the nuclear interior to the nuclear periphery during its transcriptional activation. CAB repositioning is mediated by the red/far-red photoreceptors phytochromes (PHYs) and is inhibited by repressors of PHY signalling, including COP1, DET1 and PIFs. CAB repositioning appears to be a separate regulatory step occurring before its full transcriptional activation. Moreover, the light-inducible loci RBCS, PC and GUN5 undergo similar repositioning behaviour during their transcriptional activation. Our study supports a light-dependent gene regulatory mechanism in which PHYs activate light-inducible loci by relocating them to the nuclear periphery; it also provides evidence for the biological importance of gene positioning in the plant kingdom.

Suggested Citation

  • Chun-Miao Feng & Yongjian Qiu & Elise K. Van Buskirk & Emily J. Yang & Meng Chen, 2014. "Light-regulated gene repositioning in Arabidopsis," Nature Communications, Nature, vol. 5(1), pages 1-9, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4027
    DOI: 10.1038/ncomms4027
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    Cited by:

    1. Ruth Jean Ae Kim & De Fan & Jiangman He & Keunhwa Kim & Juan Du & Meng Chen, 2024. "Photobody formation spatially segregates two opposing phytochrome B signaling actions of PIF5 degradation and stabilization," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    2. Juan Du & Keunhwa Kim & Meng Chen, 2024. "Distinguishing individual photobodies using Oligopaints reveals thermo-sensitive and -insensitive phytochrome B condensation at distinct subnuclear locations," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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