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Brain transcriptomics of honey bee parasitized by Varroa destructor or Nosema ceranae

ABSTRACT: In this study we addressed whether the transcriptome profile in the honey bee brain is similar for two major parasites of honey bee, Varroa destructor and Nosema ceranae. Honey bees parasitized by these two parasites show accelerated behavioral maturation and deficiences in orientation and learning/memory that we hoped to characterized at the transcriptomic level.

ORGANISM(S): Apis mellifera

PROVIDER: GSE41109 | GEO | 2013/09/24

SECONDARY ACCESSION(S): PRJNA175822

REPOSITORIES: GEO

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Brain transcriptomics of honey bee parasitized by Varroa destructor or Nosema ceranae

Project description:In this study we addressed whether the transcriptome profile in the honey bee brain is similar for two major parasites of honey bee, Varroa destructor and Nosema ceranae. Honey bees parasitized by these two parasites show accelerated behavioral maturation and deficiences in orientation and learning/memory that we hoped to characterized at the transcriptomic level. honey bee adults infested by Varroa destructor or Nosema ceranae compared to control bees, in duplicate

2013-09-24 | E-GEOD-41109 | biostudies-arrayexpress

Trancriptome analysis of honey bees (Apis mellifera) infected with Nosema ceranae

Project description:The microsporidia Nosema ceranae are intracellular parasites that proliferate in the midgut epithelial cells of honey bees (Apis mellifera). To analyze the pathological effects of those microsporidia, we orally infected honey bee workers 7 days after their emergence. Bees were flash frozen 15 days after the infection. Then, the effects on the gut ventriculi were analyzed and compared to non-infected (control) bees. Comparisons of control vs Nosema ceranae bees

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Trancriptome analysis of honey bees (Apis mellifera) infected with Nosema ceranae

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Brain transcriptome of honeybees (Apis mellifera) infected by Nosema ceranae and/or Black Queen Cell Virus

Project description:Experimental infection of (2 days old) adult honey bee workers (30 bees per replicates, 3 replicates per treatments, from 3 different colonies (one colony per cage for each treatment)) with 10^9 genome equivalent of Black Queen Cell Virus (BQCV) in 10Âµl of sugar solution and/or 10^5 fresh Nosema ceranae spores (control bees were given a similar bee extract in PBS, without pathogen). Bees were kept in cages of 30 bees in incubator (30Â°C/50%RH). At day 13 p.i., bees were flash frozen, and stored at -80Â°C. Brain mRNA profiles of 15 old bees were generated by deep sequencing, in triplicates except for bees infected by both Nosema ceranae and Black Queen Cell Virus (duplicates)

2016-09-06 | E-GEOD-81664 | biostudies-arrayexpress

Transcriptome of Varroa destructor life cycle

Project description:To study the underlying molecular mechanisms during the Varroa destructor life cycle, we carried out transcriptomic profiling of seven stages: young mites (collected from P8 to P9 brood cells), phoretic mites (collected on adult bees), arresting mites (collected in unsealed L5 brood cells), pre-laying mites (collected from sealed brood cells containing moving larva), laying mites (collected from sealed brood cells containing pre-pupae), post-laying mites (collected from capped brood cells containing purple-eye and white-body pupae P5), emerging mites (collected from P8 to P9 brood cells). In addition, we sampled non-reproducing mites (collected from P5 brood cells, but without offspring), males (collected from P8 to P9 brood cells), and phoretic mites artificially reared in cages with adult bees. This study was performed using Apis mellifera L. honey bee colonies naturally infested by Varroa destructor mites. Adult mites were collected from 4 unrelated colonies.

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Brain transcriptome of honeybees (Apis mellifera) infected by Nosema ceranae and/or Black Queen Cell Virus

Project description:Experimental infection of (2 days old) adult honey bee workers (30 bees per replicates, 3 replicates per treatments, from 3 different colonies (one colony per cage for each treatment)) with 10^9 genome equivalent of Black Queen Cell Virus (BQCV) in 10µl of sugar solution and/or 10^5 fresh Nosema ceranae spores (control bees were given a similar bee extract in PBS, without pathogen). Bees were kept in cages of 30 bees in incubator (30°C/50%RH). At day 13 p.i., bees were flash frozen, and stored at -80°C.

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Whole genome gene expression differences between a coumaphos resistant and susceptible population of Varroa destructor

Project description:Coumaphos is an acaricide that is widely used to control Varroa mites in bee colonies. However, the extensive use of coumaphos against Varroa has resulted in the development of coumaphos resistant Varroa populations. In this study, the whole genome gene expression profile of 1) a coumaphos resistant V. destructor population (AN-CR) or 2) a coumaphos resistant V. destructor population pretreated with coumaphos (tAN-CR), was compared to the gene expression profile of a susceptible V. destructor population (ATH-S) using Illumina RNAseq.

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Nutrigenomics in honey bees: the impact of pollen nutrients on bee health

Project description:We studied the molecular mechanisms underlying the impact of pollen nutrients on honey bee (Apis mellifera) health and how those nutrients improve resistance to parasites. Using digital gene expression, we determined the changes in gene expression induced by pollen intake in worker bees parasitized or not by the mites Varroa destructor, known for suppressing immunity and decreasing lifespan of bees.

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Varroa destructor LC-MSMS crossing developmental stages and sexes

Project description:Varroa destructor is one of the most prevalent and economically damaging honey bee pests worldwide, weakening colonies by simultaneously parasitizing and transmitting damaging viruses. Despite these impacts on honey bee health, surprisingly little is known about its fundamental molecular biology. Here we present a high-resolution V. destructor protein atlas crossing all major developmental stages (egg, protonymph, deutonymph and adult) for both male and female mites as a web-based interactive tool. In a proteogenomic effort, we identified 1,464 unique peptides corresponding to 419 proteins which were previously unannotated and we included these in all subsequent analyses. In order to use mass spectrometry-based peptide sequencing to augment the genome annotation of non-model species, we analyzed their amino acid and nucleotide composition as well as orthology to other species to suggest reasons why they may have been missed initially. Using label-free quantitative proteomics, we found that 1,433 proteins were differentially regulated across developmental stages, including proteins belonging to deformed wing virus and V. destructor virus. One other virus – the bee macula-like virus – was also detected, along with the protein generated by its short 3’ overlapping reading frame. In addition, we found that 101 proteins are sexually regulated and functional enrichment analysis suggests how they may contribute to sex-specific phenotypes and behaviour. Overall, this work provides a first of its kind interrogation of the patterns of gene expression that govern the Varroa life cycle and the tools we have developed will support further research on this threatening honey bee pest.

2017-09-06 | PXD006072 | Pride

Nutrigenomics in honey bees: the impact of pollen nutrients on bee health

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