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Chloroplast-mediated activation of plant immune signalling in Arabidopsis

Author

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  • Hironari Nomura

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University
    Graduate School of Bioagricultural Sciences, Nagoya University)

  • Teiko Komori

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University)

  • Shuhei Uemura

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University)

  • Yui Kanda

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University)

  • Koji Shimotani

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University)

  • Kana Nakai

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University)

  • Takuya Furuichi

    (EcoTopia Science Institute, Nagoya University)

  • Kohsuke Takebayashi

    (Graduate School of Engineering, Osaka University)

  • Takanori Sugimoto

    (Graduate School of Engineering, Osaka University)

  • Satoshi Sano

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University)

  • I Nengah Suwastika

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University)

  • Eiichiro Fukusaki

    (Graduate School of Engineering, Osaka University)

  • Hirofumi Yoshioka

    (Graduate School of Bioagricultural Sciences, Nagoya University
    The Venture Business Laboratory, Ehime University)

  • Yoichi Nakahira

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University)

  • Takashi Shiina

    (Graduate School of Life and Environmental Sciences, Kyoto Prefectural University)

Abstract

Chloroplasts have a critical role in plant immunity as a site for the production for salicylic acid and jasmonic acid, important mediators of plant immunity. However, the molecular link between chloroplasts and the cytoplasmic-nuclear immune system remains largely unknown. Here we show that pathogen-associated molecular pattern (PAMP) signals are quickly relayed to chloroplasts and evoke specific Ca2+ signatures in the stroma. We further demonstrate that a chloroplast-localized protein, named calcium-sensing receptor (CAS), is involved in stromal Ca2+ transients and responsible for both PAMP-induced basal resistance and R gene-mediated hypersensitive cell death. CAS acts upstream of salicylic acid accumulation. Transcriptome analysis demonstrates that CAS is involved in PAMP-induced expression of defence genes and suppression of chloroplast gene expression possibly through 1O2-mediated retrograde signalling, allowing chloroplast-mediated transcriptional reprogramming during plant immune responses. The present study reveals a previously unknown chloroplast-mediated signalling pathway linking chloroplasts to cytoplasmic-nuclear immune responses.

Suggested Citation

  • Hironari Nomura & Teiko Komori & Shuhei Uemura & Yui Kanda & Koji Shimotani & Kana Nakai & Takuya Furuichi & Kohsuke Takebayashi & Takanori Sugimoto & Satoshi Sano & I Nengah Suwastika & Eiichiro Fuku, 2012. "Chloroplast-mediated activation of plant immune signalling in Arabidopsis," Nature Communications, Nature, vol. 3(1), pages 1-11, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms1926
    DOI: 10.1038/ncomms1926
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    Cited by:

    1. Muhammad Awais Zahid & Nam Phuong Kieu & Frida Meijer Carlsen & Marit Lenman & Naga Charan Konakalla & Huanjie Yang & Sunmoon Jyakhwa & Jozef Mravec & Ramesh Vetukuri & Bent Larsen Petersen & Svante R, 2024. "Enhanced stress resilience in potato by deletion of Parakletos," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Rongrong Zhang & Yu Wu & Xiangru Qu & Wenjuan Yang & Qin Wu & Lin Huang & Qiantao Jiang & Jian Ma & Yazhou Zhang & Pengfei Qi & Guoyue Chen & Yunfeng Jiang & Youliang Zheng & Xiaojie Wang & Yuming Wei, 2024. "The RING-finger ubiquitin E3 ligase TaPIR1 targets TaHRP1 for degradation to suppress chloroplast function," Nature Communications, Nature, vol. 15(1), pages 1-17, December.

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