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BLADE-ON-PETIOLE genes temporally and developmentally regulate the sheath to blade ratio of rice leaves

Author

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  • Taiyo Toriba

    (Tohoku University, Graduate School of Life Sciences)

  • Hiroki Tokunaga

    (Tohoku University, Graduate School of Life Sciences
    RIKEN, Center for Sustainable Resource Science)

  • Toshihide Shiga

    (Tohoku University, Graduate School of Life Sciences)

  • Fanyu Nie

    (Tohoku University, Graduate School of Life Sciences)

  • Satoshi Naramoto

    (Tohoku University, Graduate School of Life Sciences)

  • Eriko Honda

    (The University of Tokyo, Graduate School of Agricultural and Life Sciences)

  • Keisuke Tanaka

    (Tokyo University of Agriculture)

  • Teruaki Taji

    (Tokyo University of Agriculture)

  • Jun-Ichi Itoh

    (The University of Tokyo, Graduate School of Agricultural and Life Sciences)

  • Junko Kyozuka

    (Tohoku University, Graduate School of Life Sciences)

Abstract

Axis formation is a fundamental issue in developmental biology. Axis formation and patterning in plant leaves is crucial for morphology and crop productivity. Here, we reveal the basis of proximal-distal patterning in rice leaves, which consist of a proximal sheath, a distal blade, and boundary organs formed between these two regions. Analysis of the three rice homologs of the Arabidopsis BLADE-ON-PETIOLE1 (BOP1) gene indicates that OsBOPs activate proximal sheath differentiation and suppress distal blade differentiation. Temporal expression changes of OsBOPs are responsible for the developmental changes in the sheath:blade ratio. We further identify that the change in the sheath:blade ratio during the juvenile phase is controlled by the miR156/SPL pathway, which modifies the level and pattern of expression of OsBOPs. OsBOPs are also essential for differentiation of the boundary organs. We propose that OsBOPs, the main regulators of proximal-distal patterning, control temporal changes in the sheath:blade ratio of rice leaves.

Suggested Citation

  • Taiyo Toriba & Hiroki Tokunaga & Toshihide Shiga & Fanyu Nie & Satoshi Naramoto & Eriko Honda & Keisuke Tanaka & Teruaki Taji & Jun-Ichi Itoh & Junko Kyozuka, 2019. "BLADE-ON-PETIOLE genes temporally and developmentally regulate the sheath to blade ratio of rice leaves," Nature Communications, Nature, vol. 10(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08479-5
    DOI: 10.1038/s41467-019-08479-5
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    Cited by:

    1. Hao Wu & Ruqiang Zhang & Karl J. Niklas & Michael J. Scanlon, 2025. "Multiplexed transcriptomic analyzes of the plant embryonic hourglass," Nature Communications, Nature, vol. 16(1), pages 1-16, December.
    2. Shihao Su & Yawen Lei & Xuan Zhou & Takamasa Suzuki & Wei Xiao & Tetsuya Higashiyama, 2023. "A BLADE-ON-PETIOLE orthologue regulates corolla differentiation in the proximal region in Torenia fournieri," Nature Communications, Nature, vol. 14(1), pages 1-13, December.

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