Innovative screening of plant resistance inducers based on insect symbiotic microorganisms

基于昆虫共生微生物的植物抗性诱导剂创新筛选

• 批准号: 20F20103
• 负责人: Ivan Galis
• 金额: $ 1.47万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2020
• 资助国家: 日本
• 起止时间: 2020-09-25 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20F20103/
• 关键词: brown planthopper; biological control; microbes; rice; microbial symbiont; rice brown planthopper; defense

This research opened many new areas of knowledge that help us to better understand the role of pest associated microbial symbionts in pest performance and host plant defense. The main current conclusions of our research allow us to propose that brown planthopper honeydew indeed contains a complex mixture of microorganisms that signal the presence and/or identity of insect invader to rice plant. However, although some signals help to activate rice defense, such as 7-113 strain, others can actually counteract plant defense, such as 6-22. It suggests that enforcing the positive regulators of defense could be used to tip the balance towards the strong defense, and the use of strains such as 7-113 could be useful for improvement of rice defense during growth, which could yield similar effects as well-known Trichoderma biocontrol agent that is currently used in plant protection. In addition, this approach is cost effective and applicable in developing countries where the access to insecticides might be very limited. Because 6-22 strain boosts salicylate signaling used by plants against pathogens, we also hope to investigate antimicrobial properties of 6-22 application.

这项研究开辟了许多新的知识领域，帮助我们更好地了解害虫相关微生物共生体在害虫表现和宿主植物防御中的作用。我们的研究的主要结论使我们能够提出，褐飞虱蜜露确实含有一种复杂的微生物混合物，这些微生物向水稻植物发出昆虫入侵者存在和/或身份的信号。但是，尽管一些信号有助于激活水稻防御，如7-113菌株，但其他信号实际上可以抵消植物防御，如6-22。这表明，加强防御的正调节因子可以用来使平衡向强防御倾斜，并且使用菌株如7-113可以用于改善水稻生长期间的防御，其可以产生与目前用于植物保护的知名木霉生防剂类似的效果。此外，这一方法具有成本效益，适用于杀虫剂供应可能非常有限的发展中国家。由于6-22菌株增强植物用于对抗病原体的水杨酸信号传导，我们也希望研究6-22应用的抗菌特性。

项目成果

Characterization of honeydew-associated microbes of brown planthoppers and their role in rice defense

褐飞虱蜜露相关微生物的特征及其在水稻防御中的作用

• 发表时间: 2022
• 作者: 日向陽汰;半田裕一;Wari David・北條優子・谷明生・新屋友規・Galis Ivan
• 通讯作者: Wari David・北條優子・谷明生・新屋友規・Galis Ivan

Supplementing Nesidiocoris tenuis with a factitious diet of Artemia cysts to control Bemisia tabaci on tomato plants; a field approach

向细细奈西迪科里斯添加卤虫包囊的人工饮食，以控制番茄植株上的烟粉虱；

• 发表时间: 2022
• 作者: David Wari;Motonori Takagi;Takeshi Saito;Toshiyuki Tezuka;Kubota Naoya;Shinsuke Sato;Takashi Ogawara
• 通讯作者: Takashi Ogawara

Integrated view of plant metabolic defense with particular focus on chewing herbivores

植物代谢防御的综合观点，特别关注咀嚼食草动物

• DOI: 10.1111/jipb.13204
• 发表时间: 2022
• 期刊: Journal of Integrative Plant Biology
• 影响因子: 11.4
• 作者: Wari David;Aboshi Takako;Shinya Tomonori;Galis Ivan
• 通讯作者: Galis Ivan