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The phytochrome interacting proteins ERF55 and ERF58 repress light-induced seed germination in Arabidopsis thaliana

Author

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  • Zenglin Li

    (Faculty of Biology, University of Freiburg)

  • David J. Sheerin

    (Faculty of Biology, University of Freiburg)

  • Edda Roepenack-Lahaye

    (University of Tübingen)

  • Mark Stahl

    (University of Tübingen)

  • Andreas Hiltbrunner

    (Faculty of Biology, University of Freiburg
    University of Freiburg)

Abstract

Seed germination is a critical step in the life cycle of plants controlled by the phytohormones abscisic acid (ABA) and gibberellin (GA), and by phytochromes, an important class of photoreceptors in plants. Here we show that light-dependent germination is enhanced in mutants deficient in the AP2/ERF transcription factors ERF55 and ERF58. Light-activated phytochromes repress ERF55/ERF58 expression and directly bind ERF55/ERF58 to displace them from the promoter of PIF1 and SOM, genes encoding transcriptional regulators that prevent the completion of germination. The same mechanism controls the expression of genes that encode ABA or GA metabolic enzymes to decrease levels of ABA and possibly increase levels of GA. Interestingly, ERF55 and ERF58 are themselves under transcriptional control of ABA and GA, suggesting that they are part of a self-reinforcing signalling loop which controls the completion of germination. Overall, we identified a role of ERF55/ERF58 in phytochrome-mediated regulation of germination completion.

Suggested Citation

  • Zenglin Li & David J. Sheerin & Edda Roepenack-Lahaye & Mark Stahl & Andreas Hiltbrunner, 2022. "The phytochrome interacting proteins ERF55 and ERF58 repress light-induced seed germination in Arabidopsis thaliana," Nature Communications, Nature, vol. 13(1), pages 1-18, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29315-3
    DOI: 10.1038/s41467-022-29315-3
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    References listed on IDEAS

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    1. Debbie Winter & Ben Vinegar & Hardeep Nahal & Ron Ammar & Greg V Wilson & Nicholas J Provart, 2007. "An “Electronic Fluorescent Pictograph” Browser for Exploring and Analyzing Large-Scale Biological Data Sets," PLOS ONE, Public Library of Science, vol. 2(8), pages 1-12, August.
    2. Martina Legris & Yetkin Çaka Ince & Christian Fankhauser, 2019. "Molecular mechanisms underlying phytochrome-controlled morphogenesis in plants," Nature Communications, Nature, vol. 10(1), pages 1-15, December.
    3. Beatrix Enderle & David J. Sheerin & Inyup Paik & Praveen Kumar Kathare & Philipp Schwenk & Cornelia Klose & Maximilian H. Ulbrich & Enamul Huq & Andreas Hiltbrunner, 2017. "PCH1 and PCHL promote photomorphogenesis in plants by controlling phytochrome B dark reversion," Nature Communications, Nature, vol. 8(1), pages 1-9, December.
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