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IdChiTent

ABSTRACT: Chironomus tentans, genomic and transcriptomic data

PROVIDER: PRJEB56407 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR10313054_1.fastq.gz	Fastqsanger.gz
	ERR10313054_2.fastq.gz	Fastqsanger.gz
	ERR10357392.fastq.gz	Fastqsanger.gz
	ERR11271508_1.fastq.gz	Fastqsanger.gz
	ERR11271508_2.fastq.gz	Fastqsanger.gz

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idChiTent

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idChiTent1

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Expression profiles of the aquatic midge larvae (Chironomus tentans) under the sublethal-dose of chlopyrifos and atrazine exposure

Project description:The aquatic midge, Chironomus tentans, is a keystone species in aquatic ecosystem and used as a model organism to assess chemicals toxicity in aquatic environment. To characterize midge’s cellular and molecular responses to pesticides, we established cDNA library with 10,000 cDNA elements representing 2,456 C. tentans unique genes. Blast2go identified 49 genes potentially involved in xenobiotics metabolism, including 24 cytochrome p450s (CYPs), 14 esterases (ESTs) and 11 glutathione-s-transferases (GSTs). Based on 2,456 unique genes, a cDNA microarray was developed to monitor gene expression profiles in 4th instar larvae under chlopyrifos (0.1 µg/L and 0.5 µg/L) and 1000 µg/L atrazine 48-hr exposure. We identified 149, 435 and 244 genes were significantly differentially expressed (p-value ≤0.05 with expression ratios ≥2.0) after 0.1 µg/L, 0.5 µg/L chlopyrifos, and 1000 µg/L atrazine application, respectively. Sixteen insect detoxification genes (11 CYPs, 3 GSTs and 2 esterases) were validated by qPCR and their expressions were significantly either up- or down-regulated under chlorpyrifos and atrazine exposure, especially the expression of 10 CYPs were significantly induced after chlopyrifos and atrazine exposure. The up-regulated CYPs might be involved in xenobiotic activation and/or degradation. Furthermore, we also found 5 differentially expressed hemoglobin genes. The expression changes of hemoglobins might be an adaption mechanism of C. tentans to hypoxic condition caused by xenobiotic exposure. This study provides a platform for further functional studies of pesticide-insect interactions in C. tentans.

2016-09-29 | GSE87442 | GEO

idChiTent1 alternate haplotype

Project description:Chironomus tentans genome assembly, idChiTent1, alternate haplotype

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Protein Fe-S centers as a molecular target of toxicity of a complex transition metal oxide nanomaterial with downstream impacts on metabolism and growth

Project description:We investigated the impacts of transition metal oxide (TMO) lithium-ion battery cathode nanomaterial, lithium cobalt oxide (LCO), on gene expression in the larvae of a model sediment invertebrate Chironomus riparius.

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tfGorAlbo

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Tropheryma whipplei proteome - Analyses of new genomic, transcriptomic or proteomic data commonly result in trashing many unidentified data escaping the ‘canonical’ DNA-RNA-protein scheme

Project description:Analyses of new genomic, transcriptomic or proteomic data commonly result in trashing many unidentified data escaping the ‘canonical’ DNA-RNA-protein scheme. Testing systematic exchanges of nucleotides over long stretches produces inversed RNA pieces (here named “swinger” RNA) differing from their template DNA. These may explain some trashed data. Here analyses of genomic, transcriptomic and proteomic data of the pathogenic Tropheryma whipplei according to canonical genomic, transcriptomic and translational 'rules' resulted in trashing 58.9% of DNA, 37.7% RNA and about 85% of mass spectra (corresponding to peptides). In the trash, we found numerous DNA/RNA fragments compatible with “swinger” polymerization. Genomic sequences covered by «swinger» DNA and RNA are 3X more frequent than expected by chance and explained 12.4 and 20.8% of the rejected DNA and RNA sequences, respectively. As for peptides, several match with “swinger” RNAs, including some chimera, translated from both regular, and «swinger» transcripts, notably for ribosomal RNAs. Congruence of DNA, RNA and peptides resulting from the same swinging process suggest that systematic nucleotide exchanges increase coding potential, and may add to evolutionary diversification of bacterial populations.

2017-12-18 | PXD006238 | Pride

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