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The apocarotenoid metabolite zaxinone regulates growth and strigolactone biosynthesis in rice

Author

Listed:
  • Jian You Wang

    (King Abdullah University of Science and Technology)

  • Imran Haider

    (King Abdullah University of Science and Technology)

  • Muhammad Jamil

    (King Abdullah University of Science and Technology)

  • Valentina Fiorilli

    (University of Torino)

  • Yoshimoto Saito

    (King Abdullah University of Science and Technology)

  • Jianing Mi

    (King Abdullah University of Science and Technology)

  • Lina Baz

    (King Abdullah University of Science and Technology)

  • Boubacar A. Kountche

    (King Abdullah University of Science and Technology)

  • Kun-Peng Jia

    (King Abdullah University of Science and Technology)

  • Xiujie Guo

    (King Abdullah University of Science and Technology)

  • Aparna Balakrishna

    (King Abdullah University of Science and Technology)

  • Valentine O. Ntui

    (King Abdullah University of Science and Technology)

  • Beate Reinke

    (Institute for Biology II, Albert-Ludwigs University of Freiburg)

  • Veronica Volpe

    (University of Torino)

  • Takashi Gojobori

    (King Abdullah University of Science and Technology
    King Abdullah University of Science and Technology)

  • Ikram Blilou

    (King Abdullah University of Science and Technology)

  • Luisa Lanfranco

    (University of Torino)

  • Paola Bonfante

    (University of Torino)

  • Salim Al-Babili

    (King Abdullah University of Science and Technology)

Abstract

Carotenoid cleavage dioxygenases (CCDs) form hormones and signaling molecules. Here we show that a member of an overlooked plant CCD subfamily from rice, that we name Zaxinone Synthase (ZAS), can produce zaxinone, a novel apocarotenoid metabolite in vitro. Loss-of-function mutants (zas) contain less zaxinone, exhibit retarded growth and showed elevated levels of strigolactones (SLs), a hormone that determines plant architecture, mediates mycorrhization and facilitates infestation by root parasitic weeds, such as Striga spp. Application of zaxinone can rescue zas phenotypes, decrease SL content and release and promote root growth in wild-type seedlings. In conclusion, we show that zaxinone is a key regulator of rice development and biotic interactions and has potential for increasing crop growth and combating Striga, a severe threat to global food security.

Suggested Citation

  • Jian You Wang & Imran Haider & Muhammad Jamil & Valentina Fiorilli & Yoshimoto Saito & Jianing Mi & Lina Baz & Boubacar A. Kountche & Kun-Peng Jia & Xiujie Guo & Aparna Balakrishna & Valentine O. Ntui, 2019. "The apocarotenoid metabolite zaxinone regulates growth and strigolactone biosynthesis in rice," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08461-1
    DOI: 10.1038/s41467-019-08461-1
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    Cited by:

    1. Hendrik N. J. Kuijer & Jian You Wang & Salim Bougouffa & Michael Abrouk & Muhammad Jamil & Roberto Incitti & Intikhab Alam & Aparna Balakrishna & Derry Alvarez & Cristina Votta & Guan-Ting Erica Chen , 2024. "Chromosome-scale pearl millet genomes reveal CLAMT1b as key determinant of strigolactone pattern and Striga susceptibility," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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