Apis spp.
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PROVIDER: PRJNA339915 | ENA |
REPOSITORIES: ENA
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Project description:Molecular evolution of major royal jelly protein (mrjp) genes within the genus Apis
| PRJNA508620 | ENA
Project description:Social caste determination in the honey bee is assumed to be determined by the dietary status of the young larvae and translated into physiological and epigenetic changes through nutrient-sensing pathways. We have employed microRNA gene-microarray, and observed that both worker jelly and royal jelly showed dynamic changes in miRNA content during the 4th to 6th day of larval development . Adding specific miRNAs to royal jelly elicited significant changes in queen larval mRNA expression and in morphological characters of the emerging adult queen bee. We propose that miRNAs in the nurse bee secretions constitute an additional element in the regulatory control of caste determination in the honey bee. We collected worker and royal jelly of the Italian honeybee (ZND No.1, Apis mellifera ligustica) at 73~90 hours (4th-day larvae), 97~114 hours (5th-day larvae), and 121~138 hours (6th-day larvae) after hatching. After total RNA was extractedM-BM- and quantified , equal amounts of total RNAs from each of the three sampling days were analyzed on the LC Science miRNA-array to observe the expression variation of miRNAs between worker jelly and royal jelly along with the development time points (4th-day, 5th-day and 6th-day).
2013-12-31 | E-GEOD-50457 | biostudies-arrayexpress
Project description:Apis mellifera developed from larvae fed with heterospecific royal jelly RNA-seq project
| PRJNA201395 | ENA
Project description:Social caste determination in the honey bee is assumed to be determined by the dietary status of the young larvae and translated into physiological and epigenetic changes through nutrient-sensing pathways. We have employed Illumina/Solexa sequencing to examine the small RNA content in the bee larval food source, and show that worker jelly is enriched in miRNA complexity and abundance relative to royal jelly. The miRNA levels in worker jelly were 7-215 fold higher than in royal jelly, and both jellies showed dynamic changes in miRNA content during the 4th to 6th day of larval development. Adding specific miRNAs to royal jelly elicited significant changes in queen larval mRNA expression and in morphological characters of the emerging adult queen bee. We propose that miRNAs in the nurse bee secretions constitute an additional element in the regulatory control of caste determination in the honey bee. We collected worker and royal jelly of the Italian honeybee (ZND No.1, Apis mellifera ligustica) at 73~90 hours (4th-day larvae), 97~114 hours (5th-day larvae), and 121~138 hours (6th-day larvae) after hatching. After total RNA was extractedM-BM- and quantified , relative equal amounts of total RNAs from each of the three sampling days were pooled into respectively worker and royal jelly samples, and the fraction of small RNAs less than 30nt long was retained and sequenced on the Illumina/Solexa high-throughput platform (HTP).
2014-01-06 | E-GEOD-44853 | biostudies-arrayexpress
Project description:The genome of the western honey bee (Apis mellifera) harbours ten different major royal jelly protein genes (mrjp1-10) which originate from a single-copy precursor via gene duplication. The evolutionary fate of duplicated genes is eventually determined over time as to result in loss due to pseudogenization, or in preservation due to neo- or sub-functionalization. Both fates were already observed in the mrjp gene cluster, as only mrjp1 - 9 are expressed, whereas mrjp10 was pseudogenized and represents an incomplete gene copy. In contrast, MRJP1 underwent neofunctionalization and developed an essential function within the food jelly of queen larvae, to guaranty the survival of the whole colony. We here show combining quantitative real time PCR with quantitative mass spectrometry that expression of most mrjps (mrjp1-5 and 7) shows an age dependent pattern in worker hypopharyngeal glands as well as in brains. Expression increases after hatching until the nurse bee period and is followed by a decrease in older workers that forage for different plant products. Mrjp6 expression deviates considerably from the expression profiles of the other mrjps and transcript abundance does not correlate with protein amount. Thus, either mrjp6 does fulfil a total different function or it might be on its way to pseudogenization. Furthermore, a tissue-specific function of the proteins MRJP8 and 9 in the hypopharyngeal glands and the brain can be excluded, suggesting a more general physiological than a nutritive function for both gene products.
2019-07-18 | PXD012618 | Pride
Project description:Expression profiling of honey bees brains as a function of genotype ( Apis mellifera mellifera/Apis mellifera ligustica) and age
2010-12-31 | E-TABM-952 | biostudies-arrayexpress
Project description:Chromosome-scale of genome assembly for high royal jelly-producing honeybees (Apis mellifera ligustica)
| PRJNA689474 | ENA
Project description:Royal Jelly (RJ) is the queen-maker for the honeybee Apis mellifera, and has documented cross-species effects on longevity, fertility, and regeneration in mammals. We describe novel wound healing and stemness maintenance activities for Royalactin, the major protein component in RJ, in mice and in embryonic and post-natal stem cells, respectively. Royalactin activates a pluripotency gene regulatory network through control of chromatin dynamics to affect a phenotype that mimics ground state pluripotency. We also identified, through a haploid genetic screen, heparan sulfate proteoglycans as the major cell surface binding partners for Royalactin in mammalian cells, and demonstrate important functional interactions between Royalactin and well known pluripotency-regulating pathways. Thus, Royalactin can maintain cellular identity through affecting the dynamic state of stem cells.
2018-12-24 | GSE81799 | GEO
Project description:he brain is a vital organ in regulating complex social behaviors of honeybees including learning and memory. Knowledge of how brain membrane proteins and their phosphorylation underlie the age-related behavioral polyethism is still lacking. We presented the first comprehensive profiling and comparison of brain membrane proteome and phosphoproteome across different ages of adult worker bees in two strains of honeybee (Apis mellifera ligustica): Italian bee (ITB) and royal jelly bee (RJB), a line selected for increased RJ outputs over 4 decades.
2017-09-11 | PXD006823 | Pride
Project description:While Apis cerana cerana, like Apis mellifera, undergoes a behavioral transition from in-hive nursing to outdoor foraging duties, nothing is known about the genes underlying this social signal-triggered aged-related transition in this species. Here, we simultaneously sequenced the head transcriptomes of the 7-day-old normal nurses (N7BY), 18- and 22-day-old normal foragers (N18CJ and N22CJ), 7-day-old precocious foragers (Tq7CJ) and 22-day-old overaged or reverted nurses (Tq22BY) of A. cerana cerana by RNA-seq and made a 3-tier comparison (from pairwise to group-wise and between-group) to unravel the genes associated with this transition. Six pairwise comparisons revealed 165-492 differentially expressed genes between nurses vs. foragers. Subsequent 3 group-wise and 1 between-group comparisons narrowed the transition-associated genes down to 18 nurse- and 41 forager-unique genes and 29 (14 and 15 genes upregulated in nurses and foragers, respectively) differentially expressed genes between the 3 types of foragers and 2 types of nurses. The uniquely expressed genes are usually low-abundance long noncoding RNAs, transcription factors, transcription coactivators, RNA-binding proteins, kinases or phosphatases involved in signaling transduction and/or gene expression regulation, whereas the differentially expressed genes are often high-abundance downstream genes that directly perform the tasks of nurses or foragers, such as major royal jelly proteins for nurses and the genes involved in sugar/protein digestion, lipids/fatty acids metabolism, plant allelochemicals detoxification and defense against pathogens and predators for foragers. Mapping of the clean reads to the published A. mellifera genome uncovered that the 3 types of foragers had a greater percentage of reads from annotated exons and intergenic regions, whereas the 2 types of nurses had a greater percentage of reads from introns. Taken together, these results suggest that the reciprocal nurse-forager behavioral transition of the A. cerana cerana is regulated by a social signal-triggered intron-exon/intergenic epigenetic shift and the resulted transcriptional shift of the nurse- and forager-associated genes.
2020-09-28 | GSE104421 | GEO