Anopheles sinensis
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA412443 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR6112424.fastq.gz | Fastqsanger.gz | |||
| SRR6112425.fastq.gz | Fastqsanger.gz | |||
| SRR6112426.fastq.gz | Fastqsanger.gz | |||
| SRR6112427.fastq.gz | Fastqsanger.gz |
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Project description:In spite of the many recent developments in the field of vector sialomics, the salivary glands of larvalmosquitoes have been largely unexplored. We used whole-transcriptome microarray analysis to create a gene-expression profile of the salivary gland tissue of fourth-instar Anopheles gambiae larvae, and compare it to the gene-expression profile of a matching group of whole larvae. We identified a total of 221 probes with expression values that were (a) significantly enriched in the salivary glands, and (b)sufficiently annotated as to allow the prediction of the presence/absence of signal peptides in their corresponding gene products. Based on available annotation of the protein sequences associated with these probes, we propose that the main roles of larval salivary secretions include: (a) immune response, (b) mouthpart lubrication, (c) nutrient metabolism, and (d) xenobiotic detoxification. Other highlights of the study include the cloning of a transcript encoding a previously unknown salivary defensin (AgDef5), the confirmation of mucus secretion by the larval salivary glands, and the first report of salivary lipocalins in the Culicidae. Keywords: Anopheles gambiae, salivary gland, Diptera, gene expression, salivary defensin, transcriptome, salivary lipocalin
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Project description:In Sub-Saharan Africa, Anopheles gambiae Giles (Diptera: Culicidae) largely contributes to malaria transmission, in direct relation to environmental conditions influencing the vector ecology. Therefore, our study aimed to compare the proteomes of An. gambiae according to varying insecticide pressures associated to cotton crops also integrating different population origins from two climatic regions of Burkina Faso.
2020-03-09 | PXD016300 | Pride
Project description:Overall, the study aims at obtaining a comprehensive picture of the African malaria mosquito, Anopheles gambiae, transcriptome using high-coverage RNA-seq of sexed whole-insect samples collected at different developmental time points. This experiment focuses on male and female transcriptomes from 20 hour old embryos, 12 hour old 3rd instar larvae, 24 hour old 4th instar larvae and 10 hour old pupae sampled using a strand-specific RNA-seq approach.
2015-06-15 | E-MTAB-2880 | biostudies-arrayexpress
Project description:The salivary transcriptome of Anopheles gambiae (Diptera: Culicidae) larvae: A microarrray-based study
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Project description:We examined patterns of gene expression in two independent colonies of both M and S molecular forms of Anopheles gambiae at each of three developmental stages of interest: late larvae, sugar-fed virgin females, and gravid females. For each colony, replicates were derived from independent RNA samples extracted from different cohorts to ensure that trends were reproducible. In addition, each replicate was derived from larvae (adults) drawn from three pans (cages) to minimize the contribution of any individual pan to variation between samples. Data were obtained from a total of five biological replicates per mosquito colony.
2008-07-10 | E-TABM-344 | biostudies-arrayexpress
Project description:Spermatogenesis is a highly complex developmental process, during which diploid germline stem cells are transformed into motile haploid spermatozoa. The process involves a precisely regulated action of a large number of genes, making the testes the most distinct tissue within the body. Testis transcriptome has been analysed in several groups of animals, but never systematically studied in mosquitoes. This dataset, consisting of the transcriptome of the developing testes from late larvae and early pupae of the African malaria mosquito, Anopheles gambiae, closes the existing gap.
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Project description:In many species, males and females display differences in their physiology that are not limited to the gonads. Sex differences in adult insects can comprise body size and feeding behaviour, as only female, but not male mosquitoes are blood-feeding in order to produce eggs. This is relevant since the malaria-causing parasite Plasmodium is transmitted by a female mosquito through a previous blood meal from an infected individual. The initiation of sex-specific developmental programs can be often linked to heteromorphic sex chromosomes (XX/XY in Anopheles). In males, the X-linked genes are only present in a single copy. To counteract this hemizygosity, Anopheles, like other species, exhibits dosage compensation (DC). Anopheles DC manifests by upregulation of the single male X ensuring the equal expression of sex-chromosomal genes between males and females. To date, the sex-specific differences at the transcriptome level related to the X/Y chromosomes and DC have been characterized at post-embryonic stages. Their onset during embryogenesis, especially during the early stages where the embryo switches from the maternal to the zygotic transcriptome, is largely uncharacterized to date. Here, we generate a sex-specific transcriptome atlas across Anopheles embryogenesis ending at the first larval stage. Along with the transition from the maternal to the zygotic transcriptome, many transcripts switch isoform, where the 3’ untranslated regions (UTR) of zygotic transcripts are significantly extended compared to their maternal counterpart. We also identify stage- and sex-specific splicing events. Comparing male and female embryos, we identify 120 sexually dimorphic protein coding genes and non-coding RNAs, indicating that sexually dimorphic gene expression is not widespread during embryogenesis. Furthermore, the imbalance of X-linked genes between males and females after zygotic genome activation is corrected shortly after, where the majority of genes exhibit DC around 9 hours of embryogenesis with further fine-tuning later in development. Our atlas provides a framework to explore sex differences in development and evolution and thereby, enables future functional analyses of sex-specific expression patterns and isoform usage.
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Project description:The goals of this study are to obtain the transcriptome profiling (RNA-seq) of different developmental stages and tissues in Ostrinia furnacalis. Methods: O. furnacalis embryos were collected less than 12 h post oviposition. 1st, 3rd and 5th instar of the Asian corn borer, which represents the newly hatched larvae, the middle stage of larvae and the mature larvae, was harvested for subsequent experiments. Pupae and adults were grouped into females and males, then female and male samples were mixed at the ratio of 1:1. The 3rd instar larvae were anesthetized on an ice plate for tissue extraction. The midgut, fat body and silk gland were isolated. All these samples were generated by deep sequencing, in triplicate, using Illumina NovaSeq 6000. The sequence reads that passed quality filters were analyzed at the transcript isoform level with two methods: Burrows–Wheeler Aligner (BWA) followed by ANOVA (ANOVA) and TopHat followed by Cufflinks. Results: We obtained the transcriptome profiling (RNA-seq) of different developmental stages and tissues in Ostrinia furnacalis Conclusions: Our study representsa detailed analysis of different developmental stages and tissues in Ostrinia furnacalis
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