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Comparison of Apis mellifera workers and queens hind leg development at prepupal stages

ABSTRACT: In Apis mellifera, the female eggs can develop into workers or queen depending on the diet offered during early development. The outputs of the developed honeybee females are two morphs with particular morphological traits and related physiology. Among the specialized structures in workers the hind tibia forms the corbicula or the pollen basket, a smooth region surrounded by a row of a long scopal hairs, used for carrying pollen and other materials to the nest. This morphological trait and the respective behaviour are absent in queens. Herein we show details of the initial steps of hind legs morphogenesis in honeybee castes. Using results from the hybridization of whole genome-based oligonucleotide arrays with RNA samples from hind leg imaginal discs of pre-pupa honeybees of both castes we present a list of differentially expressed genes. Analysis used one dye-swap combination to compare workers and queens hind leg development at prepupal stages when juvenile hormone titers is much higher in queens

ORGANISM(S): Apis mellifera

SUBMITTER: Ana Bomtorin

PROVIDER: E-GEOD-34293 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Comparison of Apis mellifera workers and queens hind leg development at prepupal stages

Project description:In Apis mellifera, the female eggs can develop into workers or queen depending on the diet offered during early development. The outputs of the developed honeybee females are two morphs with particular morphological traits and related physiology. Among the specialized structures in workers the hind tibia forms the corbicula or the pollen basket, a smooth region surrounded by a row of a long scopal hairs, used for carrying pollen and other materials to the nest. This morphological trait and the respective behaviour are absent in queens. Herein we show details of the initial steps of hind legs morphogenesis in honeybee castes. Using results from the hybridization of whole genome-based oligonucleotide arrays with RNA samples from hind leg imaginal discs of pre-pupa honeybees of both castes we present a list of differentially expressed genes.

2012-02-15 | GSE34293 | GEO

Comparison of Apis mellifera workers and queens brain development at fourth instar larvae

Project description:In Apis mellifera, the female eggs can develop into workers or queen depending on the diet offered during early development. The outputs of the developed honeybee females are two morphs with particular morphological traits and related physiology. The differential feeding regime experienced by the queen and the worker larvae of the honeybee Apis mellifera shapes a complex endocrine response cascade that ultimately sets up differences in brain morphologies. Herein we report on aspects of brain morphogenesis during larval development and the brain gene expression signature of fourth instar larvae (L4) of both castes, a developmental stage characterized by the greatest differences in juvenile hormone (JH) titers between castes Using results from the hybridization of whole genome-based oligonucleotide arrays with RNA samples from brain of fourth instar larvae honeybees of both castes we present a list of differentially expressed genes. Analysis used one dye-swap combination to compare workers and queens brain development at fourth instar larvae when juvenile hormone titers is higher in queens.

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Gene expression underlying differential adult hind leg morphogenesis in honeybee castes [worker-queen_pupae]

Project description:Along with differences in physiological and behavioral characteristics, workers and queens of Apis mellifera also differ in appendage morphology. Some appendage specializations in the hind legs of honeybee workers, which are highly specialized pollinators, deserve special attention. The hind tibia of the worker has an expanded bristle-free region used for carrying pollen and propolis, the corbicula. In queens, this structure is absent. Although these morphological differences have been well characterized, the genetic inputs triggering the development of this alternative morphology have remained unknown. Through microarray analysis, we detected 1,952 genes that are differentially expressed during worker versus queen hind leg development. The gene expression signatures of the two castes have similar patterns of genes controlling development. At the beginning of the last larval instar, Ultrabithorax (Ubx) activators are more strongly expressed than in prepupae and early pupae; at this time Ubx expression is approximately 25 times higher. Within the gene expression signature, we identified a cluster formed by genes in which Ubx, Twist and Zeste binding sites are over-represented. This cluster includes genes for which Drosophila orthologs are known to be bound by Ubx, as in the case of lola. We also tested the extent of Ubx mRNA processing during wing and leg development.

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Gene expression underlying differential adult hind leg morphogenesis in honeybee castes [worker]

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Gene expression underlying differential adult hind leg morphogenesis in honeybee castes [queen]

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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 seven time points during larval development (6 hr, 12 hr, 36 hr, 60 hr, 84 hr, 108 hr and 132 hr)

2013-11-13 | E-GEOD-52288 | biostudies-arrayexpress

Transcriptome of honey bee larvae

Project description:Honey bee drones, queens and workers have vastly different phenotypes. Here we profile the the expression level of mRNAs and microRNAs of honeybee, drones, queens and workers at the L5 larval stage (91 hours +/- 1).

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Project description:We used microarrays to monitor expression patterns of several thousand genes in the brains of same-aged (10 day old) virgin queens, sterile workers, and reproductive workers in honey bees (Apis mellifera).

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