Soy and Arabidopsis receptor-like kinases respond to polysaccharide signals from Spodoptera species and mediate herbivore resistance

Takuya Uemura, Masakazu Hachisu, Yoshitake Desaki, Ayaka Ito, Ryosuke Hoshino, Yuka Sano, Akira Nozawa, Kadis Mujiono, Ivan Galis, Ayako Yoshida, Keiichirou Nemoto, Shigetoshi Miura, Makoto Nishiyama, Chiharu Nishiyama, Shigeomi Horito, Tatsuya Sawasaki, Gen ichiro Arimura

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    Plants respond to herbivory by perceiving herbivore danger signal(s) (HDS(s)), including “elicitors”, that are present in herbivores’ oral secretions (OS) and act to induce defense responses. However, little is known about HDS-specific molecules and intracellular signaling. Here we explored soybean receptor-like kinases (RLKs) as candidates that might mediate HDS-associated RLKs’ (HAKs’) actions in leaves in response to OS extracted from larvae of a generalist herbivore, Spodoptera litura. Fractionation of OS yielded Frα, which consisted of polysaccharides. The GmHAKs composed of their respective homomultimers scarcely interacted with Frα. Moreover, Arabidopsis HAK1 homomultimers interacted with cytoplasmic signaling molecule PBL27, resulting in herbivory resistance, in an ethylene-dependent manner. Altogether, our findings suggest that HAKs are herbivore-specific RLKs mediating HDS-transmitting, intracellular signaling through interaction with PBL27 and the subsequent ethylene signaling for plant defense responses in host plants.

    Original languageEnglish
    Article number224
    JournalCommunications Biology
    Volume3
    Issue number1
    DOIs
    Publication statusPublished - Dec 1 2020

    ASJC Scopus subject areas

    • Medicine (miscellaneous)
    • Biochemistry, Genetics and Molecular Biology(all)
    • Agricultural and Biological Sciences(all)

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