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AtSWEET13 and AtSWEET14 regulate gibberellin-mediated physiological processes

Author

Listed:
  • Yuri Kanno

    (RIKEN Center for Sustainable Resource Science)

  • Takaya Oikawa

    (Graduate School of Science, Tohoku University)

  • Yasutaka Chiba

    (RIKEN Center for Sustainable Resource Science
    Tokyo Metropolitan University)

  • Yasuhiro Ishimaru

    (Graduate School of Science, Tohoku University)

  • Takafumi Shimizu

    (RIKEN Center for Sustainable Resource Science)

  • Naoto Sano

    (RIKEN Center for Sustainable Resource Science)

  • Tomokazu Koshiba

    (Tokyo Metropolitan University)

  • Yuji Kamiya

    (RIKEN Center for Sustainable Resource Science)

  • Minoru Ueda

    (Graduate School of Science, Tohoku University)

  • Mitsunori Seo

    (RIKEN Center for Sustainable Resource Science
    Tokyo Metropolitan University)

Abstract

Transmembrane transport of plant hormones is required for plant growth and development. Despite reports of a number of proteins that can transport the plant hormone gibberellin (GA), the mechanistic basis for GA transport and the identities of the transporters involved remain incomplete. Here, we provide evidence that Arabidopsis SWEET proteins, AtSWEET13 and AtSWEET14, which are members of a family that had previously been linked to sugar transport, are able to mediate cellular GA uptake when expressed in yeast and oocytes. A double sweet13 sweet14 mutant has a defect in anther dehiscence and this phenotype can be reversed by exogenous GA treatment. In addition, sweet13 sweet14 exhibits altered long distant transport of exogenously applied GA and altered responses to GA during germination and seedling stages. These results suggest that AtSWEET13 and AtSWEET14 may be involved in modulating GA response in Arabidopsis.

Suggested Citation

  • Yuri Kanno & Takaya Oikawa & Yasutaka Chiba & Yasuhiro Ishimaru & Takafumi Shimizu & Naoto Sano & Tomokazu Koshiba & Yuji Kamiya & Minoru Ueda & Mitsunori Seo, 2016. "AtSWEET13 and AtSWEET14 regulate gibberellin-mediated physiological processes," Nature Communications, Nature, vol. 7(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13245
    DOI: 10.1038/ncomms13245
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