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The Gibberellin perception system evolved to regulate a pre-existing GAMYB-mediated system during land plant evolution

Author

Listed:
  • Koichiro Aya

    (Bioscience and Biotechnology Center, Nagoya University)

  • Yuji Hiwatashi

    (National Institute for Basic Biology
    School of Life Science, The Graduate University for Advanced Studies)

  • Mikiko Kojima

    (RIKEN Plant Science Center, 1-7-22, Suehiro, Tsurumi)

  • Hitoshi Sakakibara

    (RIKEN Plant Science Center, 1-7-22, Suehiro, Tsurumi)

  • Miyako Ueguchi-Tanaka

    (Bioscience and Biotechnology Center, Nagoya University)

  • Mitsuyasu Hasebe

    (National Institute for Basic Biology
    School of Life Science, The Graduate University for Advanced Studies
    ERATO, Japan Science and Technology Agency)

  • Makoto Matsuoka

    (Bioscience and Biotechnology Center, Nagoya University)

Abstract

Gibberellin (GA) controls pollen development in flowering plants via the GAMYB transcription factor. Here we show that GAMYB is conserved in Selaginella moellendorffii (lycophyte) and Physcomitrella patens (moss), although the former contains the GA signalling pathway, the latter does not. In the lycophyte, GA treatment promotes the outer wall development on microspores, whereas treatment with GA biosynthesis inhibitors disturbs its development. Contrary, in the moss, GAMYB homologue knockouts also produce abnormal spores that resemble Selaginella microspores treated with GA biosynthesis inhibitors and pollen grains of rice gamyb mutant. Moreover, the knockouts fail to develop male organs, instead ectopically forming female organs. Thus, before the establishment of the GA signalling pathway, basal land plants, including mosses, contained a GAMYB-based system for spore and sexual organ development. Subsequently, during the evolution from mosses to basal vascular plants including lycophytes, GA signalling might have merged to regulate this pre-existing GAMYB-based system.

Suggested Citation

  • Koichiro Aya & Yuji Hiwatashi & Mikiko Kojima & Hitoshi Sakakibara & Miyako Ueguchi-Tanaka & Mitsuyasu Hasebe & Makoto Matsuoka, 2011. "The Gibberellin perception system evolved to regulate a pre-existing GAMYB-mediated system during land plant evolution," Nature Communications, Nature, vol. 2(1), pages 1-9, September.
    • Handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1552
    DOI: 10.1038/ncomms1552
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    1. Weikun Jing & Feifei Gong & Guoqin Liu & Yinglong Deng & Jiaqi Liu & Wenjing Yang & Xiaoming Sun & Yonghong Li & Junping Gao & Xiaofeng Zhou & Nan Ma, 2023. "Petal size is controlled by the MYB73/TPL/HDA19-miR159-CKX6 module regulating cytokinin catabolism in Rosa hybrida," Nature Communications, Nature, vol. 14(1), pages 1-18, December.

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