Honeybee metagenome
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA630281 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR11676600_1.fastq.gz | Fastqsanger.gz | |||
| SRR11676600_2.fastq.gz | Fastqsanger.gz | |||
| SRR11676601_1.fastq.gz | Fastqsanger.gz | |||
| SRR11676601_2.fastq.gz | Fastqsanger.gz | |||
| SRR11676602_1.fastq.gz | Fastqsanger.gz |
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Project description:The honeybee (Apis mellifera) is a well-known eusocial insect. In honeybee colonies, thousands of sterile workers, including nurse and forager bees, perform various tasks within or outside the hive, respectively. The queen is the only fertile female and is responsible for reproduction. The queen and workers share similar genomes, but occupy different caste statuses. We established single-cell transcriptomic atlases of brains from queens and worker subcastes, and identified five major cell groups: Kenyon, optic lobe, olfactory projection, glial, and hemocyte cells. By dividing Kenyon and glial cells into multiple subtypes based on credible markers, we observed that vitellogenin (vg) was highly expressed in specific glial-cell subtypes in brains of queens. Knockdown of vg at the early larval stage significantly suppressed the development into adult queens. We demonstrate vg expression as a "molecular signature" for the queen caste, and suggest involvement of vg in regulating caste differentiation.
2022-07-11 | GSE184507 | GEO
Project description:The honeybee brain is comprised of a nervous system that sufficiently regulates this life transition. Knowledge about how protein phosphorylation functions in regards to the neurobiological activities in the honeybee brain to drive the age-specific labor division is still lacking. Protein phosphorylation, the most common post-translational modification (PTM), is a key switch for rapid on-off control of signaling cascades that regulate cell differentiation and development, enzyme activity and metabolic maintenance in living cells. A fundamental mechanism for regulating signaling network and protein activity is the covalent PTM of serine (Ser), threonine (Thr), and tyrosine (Tyr) residues with phosphate. Fortunately, because of advances in phosphopeptide enrichment and improvements in mass spectrometry (MS) instrumentation and methods, phosphoproteomics has enabled large-scale identification of protein phosphorylation sites and phosphorylation networks in biological samples. Although the proteome has been mapped in the brain of nurse and forager bees, knowledge about age-specific effects of phosphorylation regulation on proteins in the honeybee brain is still lacking. Moreover, information in regards to the honeybee phosphoproteome is also very limited. Only very recently, in-depth phosphoproteomics analyses of protein phosphorylation networks in the hypopharyngealgland of the honeybee have been reported. Although the phosphoproteome analyses during the development of brood and salivary glands has been reported, only very limited proteins were phosphorylated and phosphorylation sites of those phosphoproteins were not assigned. Therefore, a comprehensive characterization of phosphoproteomics and changes in the brains of nurse and forager bees is key to understand the phosphorylation events underlying age-specific physiology to achieve the completion of biological missions in this well-organized social community of the honeybee. Honeybee (A. m. ligustica) colonies used for sampling were raised at the apiary of the Institute of Apicultural Research, Chinese Academy of Agricultural Science, Beijing. Newly emerged (<12 h after emergence) worker bees were marked on their thoraxes and placed back into the colonies to develop and then the marked nurse and forager bees were collected on days 10 and 20, respectively. There were 150 bees sampled from each of the five colonies which have queens at the same age. In brief, for each time point, worker bees were sampled from five colonies, and pooled all samples for further analysis. This procedure was repeated three times, so that we finally ended up with three independent biological replicates per time point, each consisting of 150 honeybees. Then their brains were dissected, and the brain samples were pooled and stored at −80 °C for further analysis. All the colonies were managed with almost identical population, food, and brood during the nectar flow of chaste berry (Vitexnegundo L.) in June.
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Project description:Royal jelly (RJ) is a proteinaceous secretion of the hypopharyngeal glands (HGs) in the head of honeybee workers. It is a critical food for queen bees and young larvae that decides the fate of fertilized eggs in developing into either queen bees or worker bees during the early larval stages. RJ is also widely used in humans for health promotion as agent, such as antibacterial, antioxidant, and antiaging properties. To increase RJ yields, a stock of high RJ producing honeybees (RJBs) has genetically selected from Italian honeybees (ITBs) in China since 1980s. To date, one colony of RJBs can produce more than 10 kg of RJ per year, a yield that is 10-times greater than that produced by a colony of ITBs. To elucidate the mechanism of the enforced gland performance in producing RJ in RJBs, the spatio-temporal HG proteomes of newly emerged bees, nurse bees, and forager bees, were compared between the ITBs and RJBs. Proteins in the critical pathways that are implicated in the secretory activity of RJ in HGs are validated biochemically and biologically by manipulating the NBs into extended nursing periods and the FBs to revert into NBs. This will provide a novel mechanistic insight into the HGs achieving an enhanced biological mission of producing the valuable bee-product, RJ.
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Project description:Female larvae of the honeybee (Apis mellifera) develop into either queens or workers depending on nutrition during larval development. This nutritional stimulus triggers different developmental trajectories, resulting in adults that differ in physiology, behaviour and life-span. To understand how these developmental trajectories are established we have undertaken a comprehensive analysis of differential gene expression throughout larval development. Gene expression of honeybee queen and worker larval samples was analysed at 60 hours with high-throughout sequencing
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Project description:The major environmental determinants of honeybee caste development come from larval nutrients: royal jelly stimulates the differentiation of larvae into queens, whereas beebread leads to worker bee fate. However, these determinants are not fully characterized. Here we report that plant RNAs, particularly miRNAs, which are more enriched in beebread than in royal jelly, delay development and decrease body and ovary size in honeybees, thereby preventing larval differentiation into queens and inducing development into worker bees. Mechanistic studies reveal that amTOR, a stimulatory gene in caste differentiation, is the direct target of miR162a. Interestingly, the same effect also exists in non-social Drosophila. When such plant RNAs and miRNAs are fed to Drosophila larvae, they cause extended developmental times and reductions in body weight and length, ovary size and fecundity. This study identifies an uncharacterized function of plant miRNAs that fine-tunes honeybee caste development, offering hints for understanding cross-kingdom interaction and coevolution.
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