Bombus terrestris
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA358479 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR5125110_1.fastq.gz | Fastqsanger.gz | |||
| SRR5125110_2.fastq.gz | Fastqsanger.gz | |||
| SRR5125120_1.fastq.gz | Fastqsanger.gz | |||
| SRR5125120_2.fastq.gz | Fastqsanger.gz | |||
| SRR5125130_1.fastq.gz | Fastqsanger.gz |
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Project description:The switch between biological states during key life-history transitions requires major reprogramming at the behavioural level that is under the control of the brain. In this study we focused on major life-history transitions in bumblebee queens (Bombus terrestris) that involve switching from virgin to mated and reproductively mature. To reveal the molecular processes underpinning the behavioural changes that accompany these transitions, we characterised the neurogenomic state of queens that succeeded or failed in making these transitions. Analyses of shared transcription patterns suggested that failures are associated with larger molecular signatures than successes. This was observed at the level of total numbers of differentially expressed genes (DEGs) and proportions of these genes that were up-regulated, and applies to both mating and reproductive maturation. ‘Failed Reproductive’ queens were the most distinct phenotype, associated with the highest number of DEGs (1,578) and two networks of co-expressed genes. Mating status influenced gene expression the least, followed by the transition between the two successful phenotypes (mating to reproductive maturation) and reproductive maturation. However, this pattern was not mirrored in terms of functional specialisations, for Gene Ontology (GO) terms, KEGG pathways and co-expression networks associated with DEGs. Out of the 21 highly connected (hub) genes associated with co-expression networks, 9 are involved in neural processes and 4 are regulators of gene expression. This study shows that different life-history transitions trigger distinct molecular profiles, within a single caste of a eusocial insect. Failure to surmount key life-history transitions has the largest effect on a queen’s neurogenomic state, and it triggers a massive overall up-regulation of gene expression. Hence, failure is an important outcome that must be taken into account when analysing the molecular regulation of important life-history transitions.
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Project description:Our aims in this study were: 1) to identify the miRNAs of the bumble bees Bombus terrestris and B. impatiens; 2) to compare the total numbers of miRNAs between both bumble bee species and between them and the honey bee, Apis mellifera; and 3) to test whether the sequences and expression patterns of miRNAs were conserved between species. To investigate each of these aims we used miRNA-seq (deep sequencing of miRNA-enriched libraries) in B. terrestris, and bioinformatics prediction programs to identify miRNAs in both Bombus species. We identified 131 miRNAs in B. terrestris, and 114 in B. impatiens; of these, 17 were new miRNAs that had not previously been sequenced in any species. We found a striking level of difference in the miRNAs present between Bombus and A. mellifera, with 103 miRNAs in A. mellifera not being present in the genomes of the two bumble bees.
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Project description:Transcriptome-wide analysis of antennal chemoreseptors of bumble bees at different life stages uncovered the core regulatory elements of olfaction
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Project description:Our aims in this study were: 1) to identify the miRNAs of the bumble bees Bombus terrestris and B. impatiens; 2) to compare the total numbers of miRNAs between both bumble bee species and between them and the honey bee, Apis mellifera; and 3) to test whether the sequences and expression patterns of miRNAs were conserved between species. To investigate each of these aims we used miRNA-seq (deep sequencing of miRNA-enriched libraries) in B. terrestris, and bioinformatics prediction programs to identify miRNAs in both Bombus species. We identified 131 miRNAs in B. terrestris, and 114 in B. impatiens; of these, 17 were new miRNAs that had not previously been sequenced in any species. We found a striking level of difference in the miRNAs present between Bombus and A. mellifera, with 103 miRNAs in A. mellifera not being present in the genomes of the two bumble bees. miRNA profiles of Bombus terrestris at two developmental stages in larvae. This submission represents 'Bombus terrestris' component of study.
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