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ABSTRACT: Microbial community diversity of Spodoptera frugiperda (Lepidoptera: Noctuidae)

PROVIDER: PRJNA995535 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25305300_subreads.fastq.gz	Fastqsanger.gz
	SRR25305301_subreads.fastq.gz	Fastqsanger.gz
	SRR25305302_subreads.fastq.gz	Fastqsanger.gz
	SRR25305303_subreads.fastq.gz	Fastqsanger.gz
	SRR25305304_subreads.fastq.gz	Fastqsanger.gz

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Antibiotics exposure impacts the gut microbiota and influences energy and metabolic homeostasis in Spodoptera frugiperda

Project description:Insect gut microbiota plays important roles in acquiring nutrition, preventing pathogens infection, immune responses, and communicating with the environment. Gut microbiota can be affected by some external factors such as foods, temperature, and antibiotics. Spodoptera frugiperda (Lepidoptera: Noctuidae) is an important destructive pest of grain crops all over the world. The function of gut microbiota in S. frugiperda remains to be investigated. In this study, we fed the S. frugiperda with the antibiotic mixture (penicillin, gentamicin, rifampicin, and streptomycin) to perturb the gut microbiota, and further examined the effect of dysbiosis in gut microbiota on the gene expression of S. frugiperda by RNA sequencing. We found the composition and diversity of the gut bacterial community were changed in S. frugiperda after antibiotics treatmen, and the expression of genes related to energy and metabolic process were affected after antibiotics exposure in S. frugiperda. Our work will help understand the role of gut microbiota in insects.

2021-08-06 | GSE175476 | GEO

RNA-Seq analysis of a Reciprocal Transplant experiment for two strains of Spodoptera frugiperda fed on rice or corn, in laboratory and natural populations

Project description:We wished to investigate if adaptation to host-plant diet is the basis of differentiation for two strains of Spodoptera frugiperda (Lepidoptera:Noctuidae). We performed reciprocal transplant experiments in laboratory conditions, feeding each strain (sf-C and sf-R) with artificial diet, corn plants or rice plants. RNA-Seq was performed on pooled 4th instar larvae from this experiment. We compared this transcriptional response with that of individual 4th instar larvae collected in corn and grass fields in Florida.

2019-02-11 | E-MTAB-6540 | biostudies-arrayexpress

Multiple Evolutionary Pathways to Host Adaptation in the Fall Armyworm

Project description:During the over 300 million years of co-evolution between herbivorous insects and their host plants, a dynamic equilibrium of evolutionary arms race has been established. However, the co-adaptation between insects and their host plants is a complex process, often driven by multiple evolutionary mechanisms. We found that various lepidopteran pests that use maize as a host exhibit differential adaptation to the plant secondary metabolites, benzoxazinoids (BXs). Notably, the Spodoptera genus, including Spodoptera frugiperda (fall armyworm) and Spodoptera litura (cotton leafworm), demonstrate greater tolerance to BXs compared to other insects. Through comparative transcriptomic analysis of the midgut, we identified four candidate genes potentially involved in BXs detoxification in S. frugiperda. Subsequently, we confirmed two UGT genes, Sfru33T10 and Sfru33F32, as key players in BXs detoxification using CRISPR/Cas9 gene-editing technology. Phylogenetic analysis revealed that Sfru33T10 evolved independently within the Noctuidae family and is involved in the glycosylation of HDMBOA, while Sfru33F32 evolved independently within the Spodoptera genus and functions as a key detoxification enzyme responsible for the glycosylation of both DIMBOA and HMBOA. Our study demonstrates that the UGT gene family plays a crucial role in the adaptation of noctuid insects to maize, with multiple independent evolutionary events within the Noctuidae family and the Spodoptera genus contributing significantly to host adaptation.

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Fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) Whole Gut bacteria

Project description:Fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) Whole Gut bacteria Metagenome

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Project description:Effects of camptothecin on hemolymph of Spodoptera frugiperda (Lepidoptera: Noctuidae)

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Project description:Effects of azadirachtin on hemolymph of Spodoptera frugiperda (Lepidoptera: Noctuidae)

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RNA-seq of three Spodoptera frugiperda tissues (Midgut, Fat body, Hemocytes), at 2 time-points (8h and 15h) after infestation by entomopathogenic nematodes Steinernema carpocapsae/Xenorhabdus nematophila

Project description:Nematodes such as Steinernema carpocapsae are used as organic pesticides because of their ability to prey on live insects. They do so thanks to their symbiotic bacteria, that they release within the hemocoel of insects. In this study we wanted to study how Spodoptera frugiperda, a Lepidoptera pest of crops becoming invasive around the world, defend themselves against the nematodes. We infested S. frugiperda larvae with nematodes and dissected three tissues: the midgut, the fat body and the hemocytes at two time-points: 8 h and 15 h after infestation. We performed single-end RNA-seq on these samples to study the tissue specificity of S. fru response, as well as its dynamic.

2019-12-03 | E-MTAB-7976 | biostudies-arrayexpress

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

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Project description:This SuperSeries is composed of the following subset Series: GSE16775: Effect of HdIV or MdBV injection on the Spodoptera frugiperda hemocyte transcriptome GSE16776: Effect of HdIV or MdBV injection on the Spodoptera frugiperda fat body transcriptome Refer to individual Series

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De novo sequencing of transcriptome of Sf9 cells after Bm-15 overexpression and repression

Project description:Small nucleolar RNAs (snoRNA) function in guiding 2'-O-methylation and pseudouridylation of ribosomal RNAs. But we found that knock down of a C/D box snoRNA, Bm-15, can induce apoptosis of insect Spodoptera frugiperda Sf9 cells. For the genome sequence of Spodoptera frugiperda is incomplete, here with the de novo sequencing method, transcriptome of Spodoptera frugiperda cell line Sf9 were sequenced after being transfected with overexpression vector and repression probes of snoRNA Bm-15. Results showed that 21 apoptosis-related genes were up-regulated upon Bm-15 inhibition and down-regulated with Bm-15 overexpression.

2019-04-17 | GSE98196 | GEO

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