A faster killing effect of plastid-mediated RNA interference on a leaf beetle through induced dysbiosis of the gut bacteria
文献类型： 外文期刊
作者： Zhang, Yiqiu 1 ; Ke, Zebin 1 ; Xu, Letian 1 ; Yang, Yang 1 ; Chang, Ling 1 ; Zhang, Jiang 1 ;
作者机构： 1.Hubei Univ, Sch Life Sci, State Key Lab Biocatalysis & Enzyme Engn, Hubei Hongshan Lab, Wuhan 430062, Peoples R China
2.Chinese Acad Agr Sci, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr, Key Lab Synthet Biol,Minist Agr & Rural Affairs,Ag, Shenzhen 518120, Peoples R China
关键词： poplar; RNA interference; gut bacteria; plastid transformation; Plagiodera versicolora
期刊名称：PLANT COMMUNICATIONS （ 影响因子：11.6； 五年影响因子：11.8 ）
ISSN： 2590-3462
年卷期： 2024 年 5 卷 9 期
页码：
收录情况： SCI
摘要： The expression of double-stranded RNAs (dsRNAs) from the plastid genome has been proven to be an effective method for controlling herbivorous pests by targeting essential insect genes. However, there are limitations to the efficiency of plastid-mediated RNA interference (PM-RNAi) due to the initial damage caused by the insects and their slow response to RNA interference. In this study, we developed transplastomic poplar plants that express dsRNAs targeting the beta-Actin (dsACT) and Srp54k (dsSRP54K) genes of Plagiodera versicolora. Feeding experiments showed that transplastomic poplar plants can cause significantly higher mortality in P. versicolora larvae compared with nuclear trans- genic or wild-type poplar plants. The efficient killing effect of PM-RNAi on P. versicolora larvae was found to be dependent on the presence of gut bacteria. Importantly, foliar application of a gut bacterial strain, Pseudomonas putida, will induce dysbiosis in the gut bacteria of P. versicolora larvae, leading to a significant acceleration in the speed of killing by PM-RNAi. Overall, our findings suggest that interfering with gut bacteria could be a promising strategy to enhance the effectiveness of PM-RNAi for insect pest control, offering a novel and effective approach for crop protection based on RNAi technology.
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