Rice detects bacteria in sucking pest to defend from its attack

[著者] David Wari, Kabid Md Alamgir, Kadis Mujiono, Yuko Hojo, Tomonori Shinya, Akio Tani, Hiroko Nakatani, Ivan Galis

[発表タイトル] Honeydew-associated microbes elicit defense responses against brown planthopper in rice

[掲載論文] Journal of Experimental Botany 70: 1683-1696 (2019)
doi.org/10.1093/jxb/erz041

[使用した共通機器] LC-MS/MS; GC-MS

[内容紹介] Planthoppers are small but serious pests on plants. In rice, brown planthoppers (Nilaparvata lugens) are causing extensive damage by feeding on plants as well as by transmitting viral diseases. It is therefore very important for rice to effectively recognize the pest and activate its strong defense responses soon after attack. Here we found that honeydew which is released from feeding planthoppers contains various bacterial cells that are rapidly detected by rice plants. We propose that microbes in planthopper sweet secretions betray the pest to rice plants and thus serve as important signals (elicitors) of rice defense. We speculate that this may be a general system in plants to activate their defenses against various sucking pests which are all commonly producing honeydew during feeding.(文責 Ivan Galis)

お問い合わせ先: 植物・昆虫間相互作用グループ