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GIBBERELLIN INSENSITIVE DWARF1 encodes a soluble receptor for gibberellin

Author

Listed:
  • Miyako Ueguchi-Tanaka

    (Nagoya University)

  • Motoyuki Ashikari

    (Nagoya University)

  • Masatoshi Nakajima

    (The University of Tokyo)

  • Hironori Itoh

    (Nagoya University)

  • Etsuko Katoh

    (National Institute of Agrobiological Sciences)

  • Masatomo Kobayashi

    (BioResources Center)

  • Teh-yuan Chow

    (Institute of Botany Academia, Sinica
    Central Taiwan University of Science and Technology)

  • Yue-ie C. Hsing

    (Institute of Botany Academia, Sinica)

  • Hidemi Kitano

    (Nagoya University)

  • Isomaro Yamaguchi

    (The University of Tokyo
    The University of Tokyo)

  • Makoto Matsuoka

    (Nagoya University)

Abstract

Gibberellins (GAs) are phytohormones that are essential for many developmental processes in plants. It has been postulated that plants have both membrane-bound and soluble GA receptors; however, no GA receptors have yet been identified. Here we report the isolation and characterization of a new GA-insensitive dwarf mutant of rice, gid1. The GID1 gene encodes an unknown protein with similarity to the hormone-sensitive lipases, and we observed preferential localization of a GID1–green fluorescent protein (GFP) signal in nuclei. Recombinant glutathione S-transferase (GST)–GID1 had a high affinity only for biologically active GAs, whereas mutated GST–GID1 corresponding to three gid1 alleles had no GA-binding affinity. The dissociation constant for GA4 was estimated to be around 10-7 M, enough to account for the GA dependency of shoot elongation. Moreover, GID1 bound to SLR1, a rice DELLA protein, in a GA-dependent manner in yeast cells. GID1 overexpression resulted in a GA-hypersensitive phenotype. Together, our results indicate that GID1 is a soluble receptor mediating GA signalling in rice.

Suggested Citation

  • Miyako Ueguchi-Tanaka & Motoyuki Ashikari & Masatoshi Nakajima & Hironori Itoh & Etsuko Katoh & Masatomo Kobayashi & Teh-yuan Chow & Yue-ie C. Hsing & Hidemi Kitano & Isomaro Yamaguchi & Makoto Matsuo, 2005. "GIBBERELLIN INSENSITIVE DWARF1 encodes a soluble receptor for gibberellin," Nature, Nature, vol. 437(7059), pages 693-698, September.
    • Handle: RePEc:nat:nature:v:437:y:2005:i:7059:d:10.1038_nature04028
    DOI: 10.1038/nature04028
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    Cited by:

    1. Bihai Shi & Amelia Felipo-Benavent & Guillaume Cerutti & Carlos Galvan-Ampudia & Lucas Jilli & Geraldine Brunoud & Jérome Mutterer & Elody Vallet & Lali Sakvarelidze-Achard & Jean-Michel Davière & Ale, 2024. "A quantitative gibberellin signaling biosensor reveals a role for gibberellins in internode specification at the shoot apical meristem," Nature Communications, Nature, vol. 15(1), pages 1-18, December.
    2. Hideki Yoshida & Ko Hirano & Kenji Yano & Fanmiao Wang & Masaki Mori & Mayuko Kawamura & Eriko Koketsu & Masako Hattori & Reynante Lacsamana Ordonio & Peng Huang & Eiji Yamamoto & Makoto Matsuoka, 2022. "Genome-wide association study identifies a gene responsible for temperature-dependent rice germination," Nature Communications, Nature, vol. 13(1), pages 1-13, December.

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