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RinRK1 enhances NF receptors accumulation in nanodomain-like structures at root-hair tip

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  • Ning Zhou

    (Chinese Academy of Sciences
    University of the Chinese Academy of Sciences)

  • Xiaolin Li

    (Chinese Academy of Sciences
    University of the Chinese Academy of Sciences)

  • Zhiqiong Zheng

    (Chinese Academy of Sciences)

  • Jing Liu

    (Chinese Academy of Sciences)

  • J. Allan Downie

    (Norwich Research Park)

  • Fang Xie

    (Chinese Academy of Sciences)

Abstract

Legume-rhizobia root-nodule symbioses involve the recognition of rhizobial Nod factor (NF) signals by NF receptors, triggering both nodule organogenesis and rhizobial infection. RinRK1 is induced by NF signaling and is essential for infection thread (IT) formation in Lotus japonicus. However, the precise mechanism underlying this process remains unknown. Here, we show that RinRK1 interacts with the extracellular domains of NF receptors (NFR1 and NFR5) to promote their accumulation at root hair tips in response to rhizobia or NFs. Furthermore, Flotillin 1 (Flot1), a nanodomain-organizing protein, associates with the kinase domains of NFR1, NFR5 and RinRK1. RinRK1 promotes the interactions between Flot1 and NF receptors and both RinRK1 and Flot1 are necessary for the accumulation of NF receptors at root hair tips upon NF stimulation. Our study shows that RinRK1 and Flot1 play a crucial role in NF receptor complex assembly within localized plasma membrane signaling centers to promote symbiotic infection.

Suggested Citation

  • Ning Zhou & Xiaolin Li & Zhiqiong Zheng & Jing Liu & J. Allan Downie & Fang Xie, 2024. "RinRK1 enhances NF receptors accumulation in nanodomain-like structures at root-hair tip," Nature Communications, Nature, vol. 15(1), pages 1-16, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47794-4
    DOI: 10.1038/s41467-024-47794-4
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    1. Simona Radutoiu & Lene Heegaard Madsen & Esben Bjørn Madsen & Hubert H. Felle & Yosuke Umehara & Mette Grønlund & Shusei Sato & Yasukazu Nakamura & Satoshi Tabata & Niels Sandal & Jens Stougaard, 2003. "Plant recognition of symbiotic bacteria requires two LysM receptor-like kinases," Nature, Nature, vol. 425(6958), pages 585-592, October.
    2. Esben Bjørn Madsen & Lene Heegaard Madsen & Simona Radutoiu & Magdalena Olbryt & Magdalena Rakwalska & Krzysztof Szczyglowski & Shusei Sato & Takakazu Kaneko & Satoshi Tabata & Niels Sandal & Jens Sto, 2003. "A receptor kinase gene of the LysM type is involved in legumeperception of rhizobial signals," Nature, Nature, vol. 425(6958), pages 637-640, October.
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