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Phytochrome-interacting factors directly suppress MIR156 expression to enhance shade-avoidance syndrome in Arabidopsis

Author

Listed:
  • Yurong Xie

    (Chinese Academy of Agricultural Sciences)

  • Yang Liu

    (Chinese Academy of Agricultural Sciences)

  • Hai Wang

    (Chinese Academy of Agricultural Sciences)

  • Xiaojing Ma

    (Chinese Academy of Agricultural Sciences
    Graduate School of Chinese Academy of Agricultural Sciences)

  • Baobao Wang

    (Chinese Academy of Agricultural Sciences)

  • Guangxia Wu

    (Chinese Academy of Agricultural Sciences)

  • Haiyang Wang

    (Chinese Academy of Agricultural Sciences)

Abstract

Plants have evolved a repertoire of strategies collectively termed the shade-avoidance syndrome to avoid shade from canopy and compete for light with their neighbors. However, the signaling mechanism governing the adaptive changes of adult plant architecture to shade is not well understood. Here, we show that in Arabidopsis, compared with the wild type, several PHYTOCHROME-INTERACTING FACTORS (PIFS) overexpressors all display constitutive shade-avoidance syndrome under normal high red to far-red light ratio conditions but are less sensitive to the simulated shade, whereas the MIR156 overexpressors exhibit an opposite phenotype. The simulated shade induces rapid accumulation of PIF proteins, reduced expression of multiple MIR156 genes, and concomitant elevated expression of the SQUAMOSA-PROMOTER BINDING PROTEIN-LIKE (SPL) family genes. Moreover, in vivo and in vitro assays indicate that PIFs bind to the promoters of several MIR156 genes directly and repress their expression. Our results establish a direct functional link between the phytochrome-PIFs and miR156-SPL regulatory modules in mediating shade-avoidance syndrome.

Suggested Citation

  • Yurong Xie & Yang Liu & Hai Wang & Xiaojing Ma & Baobao Wang & Guangxia Wu & Haiyang Wang, 2017. "Phytochrome-interacting factors directly suppress MIR156 expression to enhance shade-avoidance syndrome in Arabidopsis," Nature Communications, Nature, vol. 8(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00404-y
    DOI: 10.1038/s41467-017-00404-y
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    Cited by:

    1. Qing Sang & Lusheng Fan & Tianxiang Liu & Yongjian Qiu & Juan Du & Beixin Mo & Meng Chen & Xuemei Chen, 2023. "MicroRNA156 conditions auxin sensitivity to enable growth plasticity in response to environmental changes in Arabidopsis," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    2. Semeraro, Teodoro & Scarano, Aurelia & Curci, Lorenzo Maria & Leggieri, Angelo & Lenucci, Marcello & Basset, Alberto & Santino, Angelo & Piro, Gabriella & De Caroli, Monica, 2024. "Shading effects in agrivoltaic systems can make the difference in boosting food security in climate change," Applied Energy, Elsevier, vol. 358(C).

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