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PHYTOCHROME-INTERACTING FACTOR 7 and RELATIVE OF EARLY FLOWERING 6 act in shade avoidance memory in Arabidopsis

Author

Listed:
  • Qican Cheng

    (Fudan University)

  • Yue Zeng

    (Fudan University)

  • Sha Huang

    (Fudan University)

  • Chuanwei Yang

    (Fudan University)

  • Yu Xie

    (Fudan University)

  • Wen-Hui Shen

    (Université de Strasbourg)

  • Lin Li

    (Fudan University)

Abstract

Shade avoidance helps plants maximize their access to light for growth under crowding. It is unknown, however, whether a priming shade avoidance mechanism exists that allows plants to respond more effectively to successive shade conditions. Here, we show that the shade-intolerant plant Arabidopsis can remember a first experienced shade event and respond more efficiently to the next event on hypocotyl elongation. The transcriptional regulator PHYTOCHROME-INTERACTING FACTOR 7 (PIF7) and the histone H3K27-demethylase RELATIVE OF EARLY FLOWERING 6 (REF6) are identified as being required for this shade avoidance memory. RNA-sequencing analysis reveals that shade induction of shade-memory-related genes is impaired in the pif7 and ref6 mutants. Based on the analyses of enrichments of H3K27me3, REF6 and PIF7, we find that priming shade treatment induces PIF7 accumulation, which further recruits REF6 to demethylate H3K27me3 on the chromatin of certain shade-memory-related genes, leading to a state poised for their transcription. Upon a second shade treatment, enhanced shade-mediated inductions of these genes result in stronger hypocotyl growth responses. We conclude that the transcriptional memory mediated by epigenetic modification plays a key role in the ability of primed plants to remember previously experienced shade and acquire enhanced responses to recurring shade conditions.

Suggested Citation

  • Qican Cheng & Yue Zeng & Sha Huang & Chuanwei Yang & Yu Xie & Wen-Hui Shen & Lin Li, 2024. "PHYTOCHROME-INTERACTING FACTOR 7 and RELATIVE OF EARLY FLOWERING 6 act in shade avoidance memory in Arabidopsis," Nature Communications, Nature, vol. 15(1), pages 1-15, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51834-4
    DOI: 10.1038/s41467-024-51834-4
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    References listed on IDEAS

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    1. Michael G. Salter & Keara A. Franklin & Garry C. Whitelam, 2003. "Gating of the rapid shade-avoidance response by the circadian clock in plants," Nature, Nature, vol. 426(6967), pages 680-683, December.
    2. Yogev Burko & Björn Christopher Willige & Adam Seluzicki & Ondřej Novák & Karin Ljung & Joanne Chory, 2022. "PIF7 is a master regulator of thermomorphogenesis in shade," Nature Communications, Nature, vol. 13(1), pages 1-14, December.
    3. Shuzhi Zheng & Hongmiao Hu & Huimin Ren & Zhenlin Yang & Qi Qiu & Weiwei Qi & Xinye Liu & Xiaomei Chen & Xiekui Cui & Sisi Li & Bing Zhou & Daye Sun & Xiaofeng Cao & Jiamu Du, 2019. "The Arabidopsis H3K27me3 demethylase JUMONJI 13 is a temperature and photoperiod dependent flowering repressor," Nature Communications, Nature, vol. 10(1), pages 1-11, December.
    4. Sha Huang & Yu Ma & Yitian Xu & Pengfei Lu & Jie Yang & Yu Xie & Jianhua Gan & Lin Li, 2023. "Shade-induced RTFL/DVL peptides negatively regulate the shade response by directly interacting with BSKs in Arabidopsis," Nature Communications, Nature, vol. 14(1), pages 1-15, December.
    5. Nobutoshi Yamaguchi & Satoshi Matsubara & Kaori Yoshimizu & Motohide Seki & Kouta Hamada & Mari Kamitani & Yuko Kurita & Yasuyuki Nomura & Kota Nagashima & Soichi Inagaki & Takamasa Suzuki & Eng-Seng , 2021. "H3K27me3 demethylases alter HSP22 and HSP17.6C expression in response to recurring heat in Arabidopsis," Nature Communications, Nature, vol. 12(1), pages 1-16, December.
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