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A silicon transporter gene required for healthy growth of rice on land

Author

Listed:
  • Namiki Mitani-Ueno

    (Okayama University)

  • Naoki Yamaji

    (Okayama University)

  • Sheng Huang

    (Okayama University)

  • Yuma Yoshioka

    (Okayama University)

  • Takaaki Miyaji

    (Okayama University
    Okayama University)

  • Jian Feng Ma

    (Okayama University)

Abstract

Silicon (Si) is the most abundant mineral element in the earth’s crust. Some plants actively accumulate Si as amorphous silica (phytoliths), which can protect plants from stresses. Here, we report a gene (SIET4) that is required for the proper accumulation and cell-specific deposition of Si in rice and show that it is essential for normal growth. SIET4 is constitutively expressed in leaves and encodes a Si transporter. SlET4 polarly localizes at the distal side of epidermal cells and cells surrounding the bulliform cells (motor cells) of the leaf blade, where Si is deposited. Knockout of SIET4 leads to the death of rice in the presence but not absence of Si. Further analysis shows that SIET4 knockout induces abnormal Si deposition in mesophyll cells and the induction of hundreds of genes related to various stress responses. These results indicate that SIET4 is required for the proper export of Si from leaf cells to the leaf surface and for the healthy growth of rice on land.

Suggested Citation

  • Namiki Mitani-Ueno & Naoki Yamaji & Sheng Huang & Yuma Yoshioka & Takaaki Miyaji & Jian Feng Ma, 2023. "A silicon transporter gene required for healthy growth of rice on land," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42180-y
    DOI: 10.1038/s41467-023-42180-y
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    References listed on IDEAS

    as
    1. Naoki Yamaji & Yuma Takemoto & Takaaki Miyaji & Namiki Mitani-Ueno & Kaoru T. Yoshida & Jian Feng Ma, 2017. "Erratum: Reducing phosphorus accumulation in rice grains with an impaired transporter in the node," Nature, Nature, vol. 543(7643), pages 136-136, March.
    2. Jian Feng Ma & Kazunori Tamai & Naoki Yamaji & Namiki Mitani & Saeko Konishi & Maki Katsuhara & Masaji Ishiguro & Yoshiko Murata & Masahiro Yano, 2006. "A silicon transporter in rice," Nature, Nature, vol. 440(7084), pages 688-691, March.
    3. Naoki Yamaji & Yuma Takemoto & Takaaki Miyaji & Namiki Mitani-Ueno & Kaoru T. Yoshida & Jian Feng Ma, 2017. "Reducing phosphorus accumulation in rice grains with an impaired transporter in the node," Nature, Nature, vol. 541(7635), pages 92-95, January.
    4. Takaaki Miyaji & Takashi Kuromori & Yu Takeuchi & Naoki Yamaji & Kengo Yokosho & Atsushi Shimazawa & Eriko Sugimoto & Hiroshi Omote & Jian Feng Ma & Kazuo Shinozaki & Yoshinori Moriyama, 2015. "AtPHT4;4 is a chloroplast-localized ascorbate transporter in Arabidopsis," Nature Communications, Nature, vol. 6(1), pages 1-11, May.
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