Identification of differentially expressed miRNAs associated with diamide detoxification pathways in Spodoptera frugiperda

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作者
Rashmi Manohar Mahalle
Weilin Sun
Omar A. Posos-Parra
Sunghoon Jung
David Mota-Sanchez
Barry R. Pittendrigh
Keon Mook Seong
机构
[1] Chungnam National University,Institute of Agricultural Sciences
[2] Purdue University,Department of Entomology, Center for Urban and Industrial Pest Management
[3] Michigan State University,Department of Entomology
[4] Chungnam National University,Department of Smart Agriculture Systems
[5] Chungnam National University,Department of Applied Biology, College of Agriculture and Life Sciences
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Scientific Reports | / 14卷
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摘要
The fall armyworm (FAW) Spodoptera frugiperda is a severe economic pest of multiple crops globally. Control of this pest is often achieved using insecticides; however, over time, S. frugiperda has developed resistance to new mode of action compounds, including diamides. Previous studies have indicated diamide resistance is a complex developmental process involving multiple detoxification genes. Still, the mechanism underlying the possible involvement of microRNAs in post-transcriptional regulation of resistance has not yet been elucidated. In this study, a global screen of microRNAs (miRNAs) revealed 109 known and 63 novel miRNAs. Nine miRNAs (four known and five novel) were differentially expressed between insecticide-resistant and -susceptible strains. Gene Ontology analysis predicted putative target transcripts of the differentially expressed miRNAs encoding significant genes belonging to detoxification pathways. Additionally, miRNAs are involved in response to diamide exposure, indicating they are probably associated with the detoxification pathway. Thus, this study provides comprehensive evidence for the link between repressed miRNA expression and induced target transcripts that possibly mediate diamide resistance through post-transcriptional regulation. These findings highlight important clues for further research to unravel the roles and mechanisms of miRNAs in conferring diamide resistance.
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