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

ABSTRACT: The fall armyworm (FAW) Spodoptera frugiperda is one of the most severe economic pests 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.

ORGANISM(S): Spodoptera frugiperda

PROVIDER: GSE233976 | GEO | 2023/09/01

REPOSITORIES: GEO

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MicroRNAs Mediate Insecticide Tolerance in Spodoptera frugiperda

Project description:Spodoptera frugiperda is the world’s major agricultural pests, and has the distinctive features of high fecundity, strong migratory capacity and high resistance to most insecticides. At present, the control of S. frugiperda in China relies mainly on the spraying of chemical insecticides. MicroRNAs (miRNAs) are a class of small, single-stranded, non-coding RNAs, and play crucial regulatory roles in various physiological processes, including the insecticide resistance in insects. However, little is known about the regulatory roles of miRNAs on the resistance of S. frugiperda to insecticides. In the present research, the miRNAs that were differentially expressed after cyantraniliprole, spinetoram, emamectin benzoate and tetraniliprole treatment were analyzed by RNA-Seq. A total of 504 miRNAs were systematically identified from S. frugiperda, and 24, 22, 31 and 30 miRNAs were differentially expressed after treatments of cyantraniliprole, spinetoram, emamectin benzoate and tetraniliprole. GO and KEGG enrichment analyses were used to predict the function of differentially expressed miRNAs’ target genes. Importantly, ten miRNAs were significantly differentially expressed among the treatments of three insecticides. MiR-278-5p, miR-13b-3p, miR-10485-5p and miR-10483-5p were significantly down-regulated among the treatments of three insecticides by RT-qPCR. Furthermore, overexpression of miR-278-5p, miR-13b-3p, miR-10485-5p and miR-10483-5p significantly increased the mortality of S. frugiperda to cyantraniliprole and emamectin benzoate. The mortality was significantly increased with spinetoram treatment after overexpression of miR-13b-3p, miR-10485-5p and miR-10483-5p. These results suggest that miRNAs, which are differentially expressed in response to insecticides, may play a key regulatory role in the insecticide resistance in S. frugiperda.

2021-12-04 | GSE189968 | GEO

Transcriptomic analysis the mechanism of detoxification metabolism induced by different insecticide in Spodoptera frugiperda

Project description: In order to clarify the molecular mechanism of metabolic detoxification in Spodoptera frugiperda, the enzyme activity assay and transcriptome sequencing analysis were used to screen and identify the relevant genes related to metabolic detoxification after induced by insecticides at LC50 dose.

2023-03-08 | GSE226546 | GEO

Identification and profiling of microRNAs in Zea mays in response to Spodoptera frugiperda feeding

Project description:MicroRNAs (miRNAs) are endogenous small noncoding RNAs (18–25 nt) that are involved in many physiological processes including development, cancer, immunity, apoptosis and host-microbe interactions through posttranscriptional regulation of gene expression. In this study, we measured the profile of small RNAs in Zea mays after one day and three days of Spodoptera frugiperda feeding. We identified 500 miRNAs, including 449 known and 51 novel miRNAs. In addition, we identified the miRNAs differentially expressed in Z. mays after one day and three days of S. frugiperda feeding, and the possible target genes were identified. This study identified critical miRNAs involved in the Z. mays during S. frugiperda feeding, thus providing a useful resource for exploring the regulatory role of miRNAs during plant-insect interactions.

2023-11-20 | GSE247798 | GEO

Identification and profiling of microRNAs in the developmental transitions of Spodoptera frugiperda

Project description:MicroRNAs (miRNAs) are endogenous small noncoding RNAs (18–25 nt) that are involved in many physiological processes including development, cancer, immunity, apoptosis and host-microbe interactions through posttranscriptional regulation of gene expression. In this study, we measured the profile of small RNAs over the developmental transitions of Spodoptera frugiperda from egg to adult. We identified 741 miRNAs, including 493 known and 248 novel miRNAs. In addition, we identified the miRNAs differentially expressed over the developmental transitions via weighted gene co-expression network analysis (WGCNA). This study identified critical miRNAs involved in the transitions of this important pest insect S. frugiperda from egg to adult, thus providing a useful resource for exploring the regulatory role of miRNAs during insect post-embryonic development.

2023-11-18 | GSE247558 | GEO

MicroRNAome of Spodoptera frugiperda cells (Sf9) and its alteration following baculovirus infection

Project description:MicroRNAs (miRNAs) as small non-coding RNAs play important roles in many biological processes such as development, cell signalling and immune response. Studies also suggest that miRNAs are important in host–virus interactions where the host limits virus infection by differentially expressing miRNAs that target essential viral genes. Here, we identified conserved and new miRNAs from Spodoptera frugiperda cells (Sf9) using a combination of deep sequencing and bioinformatics as well as experimental approaches. S. frugiperda miRNAs share common features of miRNAs in other organisms, such as uracil (U) at the 59 end of miRNA. The 59 ends of the miRNAs were more conserved than the 39 ends, revealing evolutionary protection of the seed region in miRNAs. The predominant miRNAs were found to be conserved among arthropods. The majority of homologous miRNAs were found in Bombyx mori, with 76 of the 90 identified miRNAs. We found that seed shifting and arm switching have happened in this insect’s miRNAs. Expression levels of the majority of miRNAs changed following baculovirus infection. Results revealed that baculovirus infection mainly led to an overall suppression of cellular miRNAs. We found four different genes being regulated by sfr-miR-184 at the post-transcriptional level. The data presented here further support conservation of miRNAs in insects and other organisms. In addition, the results reveal a differential expression of host miRNAs upon baculovirus infection, suggesting their potential roles in host–virus interactions. Seed shifting and arm switching happened during evolution of miRNAs in different insects and caused miRNA diversification, which led to changes in the target repository of miRNAs.

2015-06-11 | GSE60064 | GEO

MicroRNAome of Spodoptera frugiperda cells (Sf9) and its alteration following baculovirus infection

2015-06-11 | E-GEOD-60064 | biostudies-arrayexpress

RNA-Sequencing of 3rd-instar Spodoptera frugiperda post-infection with Spodoptera frugiperda ascovirus-1a (SfAV-1a), the ascovirus type species.

Project description:Purpose: We analyzed the 3rd-instar Spodoptera frugiperda response after SfAV-1a infection. Specifically, we targeted three gene types in the infected host namely, mitochondrial, cytoskeleton and innate immunity genes.

2020-02-09 | GSE114901 | GEO

Spodoptera frugiperda

Project description:Spodoptera frugiperda Metagenome

| PRJNA815872 | ENA

Spodoptera frugiperda

Project description:Spodoptera frugiperda (WGS)

| PRJNA678657 | ENA

Comparison of gene expression in three strains of Spodoptera Frugiperda (Insecta: Lepidoptera: Noctuidae)

Project description:The aim of this experiment was to compare the transciptome of the fall armyworm (Spodoptera frugiperda) strain SUS (a laboratory insecticide-susceptible standard) with organophosphate (OP) and pyrethroid (PYR) resistant strains were collected in cornfields located in Minas Gerais and Mato Grosso States, Brazil, in 2008 and maintained in the laboratory under selection with chlorpyrifos (at increasing discriminating doses from 100 up to 400 µg of insecticide/g of insect in a topical bioassay) or lambda-cyhalothrin (from 8.4 up to 27 µg of insecticide/g of insect) respectively The custom microarray used in this study was designed using the Agilent eArray platform (Agilent Technologies). A SurePrint HD (8×15k) expression array was designed using the base composition and the best probe methodologies to design sense orientation 60-mer probes with a 3′ bias. The FAW EST database (SPODOBASE) was used as the reference transcriptome (Negre, Hotelier et al. 2006). These sequences are derived from 8 cDNA libraries as follows: Sf1F: Fat body, Sf1H: Hemocyte, Sf1M: Midgut, Sf1P: Pool of various tissues, Sf2H: Immune Challenged hemocytes, Sf2L: Sf21 Cell lines sequences, Sf2M: Xenobiotic Induced Midgut and Sf9L: Sf9 cell lines sequences. All assembled contigs and singlets were kindly sent by the website maintainers. The BLAST2GO software v.2.3.1 (http://www.blast2go.org) was used to annotate the EST database. 60-mer probes were designed for all 7,552 assembled contigs and 5,519 annotated singlets (BlastX), totaling 13,071 sequences. For contigs encoding detoxification enzymes (P450s, GSTs and CEs) three probes were designed. Additional probe groups for 15 control genes were also included. For reference all sequences are included in the zip file with array data. References: Negre, V., T. Hotelier, et al. (2006). "SPODOBASE : an EST database for the lepidopteran crop pest Spodoptera." BMC Bioinformatics 7: 322.

2013-08-01 | GSE43295 | GEO

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