Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1177264 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR31100949_1.fastq.gz | Fastqsanger.gz | |||
| SRR31100949_2.fastq.gz | Fastqsanger.gz | |||
| SRR31100950_1.fastq.gz | Fastqsanger.gz | |||
| SRR31100950_2.fastq.gz | Fastqsanger.gz | |||
| SRR31100951_1.fastq.gz | Fastqsanger.gz |
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Project description:Male Anophele gambiae mosquitoes transfer the steroid hormone 20-hydroxyecdysone (20E) to the female lower reproductive tract during mating. We have shown that this sexually transferred hormone is a key regulator of monandry and oviposition in An. gambiae females. In order to identify possible molecular pathways underlying the effects induced by sexually transferred 20E we investigated the transcriptional response in the atrium and spermatheca at 24 hours after 20E injection in the thorax of virgin females, which delivers to these reproductive tissues 20E levels comparable to those detected after mating. By comparing these results to those of microarrays assessing the post-mating transcriptional response in the female lower reproductive tract (LRT) at 24 hours post copulation, we were able to identify mating responsive genes likely regulated by male transferred 20E. For each experiment atrium and spermatheca were dissected from females 24 hours after 20E or ethanol (10%) injection and transcriptional profiles compared across 4 biological replicates using Agilent two-color microarrays
2015-02-03 | E-MTAB-3023 | biostudies-arrayexpress
Project description:Transcription factor Met knockdown by dsRNA injection and compared to dsRNA-GFP injected control. Met was knocked down to determine whether it plays a role in response to traditional public health insecticides in addition to juvenile hormone homologs.
2018-09-30 | E-MTAB-4043 | biostudies-arrayexpress
Project description:Background. Juvenile hormone (JH) has been demonstrated to control adult lifespan in a number of non-model insects where surgical removal of the corpora allata eliminates the hormone’s source. In contrast, little is known about how juvenile hormone affects adult Drosophila melanogaster. Previous work suggests that insulin signaling may modulate Drosophila aging in part through its impact on juvenile hormone titer, but no data yet addresses whether reduction of juvenile hormone is sufficient to control Drosophila life span. Here we adapt a recent genetic approach to knock out the corpora allata in adult Drosophila melanogaster and characterize adult life history phenotypes produced by reduction of juvenile hormone. With this system we test potential explanations for how juvenile hormone modulates aging. Conclusions. Reduced juvenile hormone alone is sufficient to extend lifespan of Drosophila melanogaster. Reduced juvenile hormone limits reproduction by inhibiting the production of yolked eggs, and this may arise because juvenile hormone is required for the post-eclosion development of vitellogenin-producing adult fat body. Our data do not support a mechanism for juvenile hormone control of longevity simply based on reducing the physiological costs of reproductive. Nor does the longevity benefit appear to function through mechanisms by which dietary restriction extends longevity. We identify transcripts that change in response to juvenile hormone independent of reproductive state and suggest these represent somatically expressed genes that could modulate how juvenile hormone controls persistence and longevity.
2013-07-26 | GSE48145 | GEO
Project description:Background. Juvenile hormone (JH) has been demonstrated to control adult lifespan in a number of non-model insects where surgical removal of the corpora allata eliminates the source of hormone. In contrast, little is known about how juvenile hormone affects adult Drosophila melanogaster. Previous work suggests that insulin signaling may modulate Drosophila aging in part through its impact on juvenile hormone titer, but no data yet addresses whether reduction of juvenile hormone is sufficient to control Drosophila life span. Here we adapt a recent genetic approach to knock out the corpora allata in adult Drosophila melanogaster and characterize adult life history phenotypes produced by reduction of juvenile hormone. With this system we test potential explanations for how juvenile hormone modulates aging. Conclusions. Reduced juvenile hormone alone is sufficient to extend lifespan of Drosophila melanogaster. Reduced juvenile hormone limits reproduction by inhibiting the production of yolked eggs, and this may arise because juvenile hormone is required for the post-eclosion development of vitellogenin-producing adult fat body. Our data do not support a mechanism for juvenile hormone control of longevity simply based on reducing the physiological costs of reproductive. Nor does the longevity benefit appear to function through mechanisms by which dietary restriction extends longevity. We identify transcripts that change in response to juvenile hormone independent of reproductive state and suggest these represent somatically expressed genes that could modulate how juvenile hormone controls persistence and longevity. Four genotypes were analyzed. They are CA knockout (CAKO), wildtype (wDah/w1118 ), CAKO with OvoD1 mutation and control (wDah/w1118) with OvoD1 mutation. Three biological replicates for each genotype.
2013-07-26 | E-GEOD-48145 | biostudies-arrayexpress
Project description:Juvenile hormone regulation of Drosophila aging
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Project description:In ant Harpegnathos saltator, workers can become the reproductive gamergates in a queenless condition. During the worker-to-gamergate transition, juvenile hormone signaling decreases but ovarian ecdysone production increases in the gamergate. Injecting juvenile hormone analog (JHA or methoprene) induces expression of worker-biased genes in the brain , while ecydsone promotes expression of ecdysone-responsive genes in ovaries.
2021-05-28 | GSE175600 | GEO
Project description:This series examines gene expression in the anterior midgut at several time points (2, 4, 8, & 16 h) after topical application of juvenile hormone III (JHIII) or acetone (control) to adult beetles of both sexes. Keywords = North American pine engraver beetle Keywords = anterior midgut Keywords = juvenile hormone Keywords = pheromone biosynthesis Keywords = Coleoptera Keywords = Scolytidae Keywords: other
2005-06-16 | GSE1483 | GEO
Project description:In the fall, Eastern North American monarch butterflies (Danaus plexippus) undergo a magnificent long-range migration. In contrast to spring and summer butterflies, fall migrants are juvenile hormone deficient, which leads to reproductive arrest and increased longevity. Migrants also use a time-compensated sun compass to help them navigate in the south/southwesterly direction en route for Mexico. Central issues in this area are defining the relationship between juvenile hormone status and oriented flight, critical features that differentiate summer monarchs from fall migrants, and identifying molecular correlates of behavioral state. Here we show that increasing juvenile hormone activity to induce summer-like reproductive development in fall migrants does not alter directional flight behavior or its time-compensated orientation, as monitored in a flight simulator. Reproductive summer butterflies, in contrast, uniformly fail to exhibit directional, oriented flight. To define molecular correlates of behavioral state, we used microarray analysis of 9417 unique cDNA sequences. Gene expression profiles reveal a suite of 40 genes whose differential expression in brain correlates with oriented flight behavior in individual migrants, independent of juvenile hormone activity, thereby separating molecularly fall migrants from summer butterflies. Intriguing genes that are differentially regulated include the clock gene vrille and the locomotion-relevant tyramine beta hydroxylase gene. In addition, several differentially regulated genes (37.5% of total) are not annotated, suggesting unique functions associated with oriented flight behavior. We also identified 23 juvenile hormone-dependent genes in brain, which separate reproductive from non-reproductive monarchs; genes involved in longevity, fatty acid metabolism, and innate immunity are upregulated in non-reproductive (juvenile-hormone deficient) migrants. The results link key behavioral traits with gene expression profiles in brain that differentiate migratory from summer butterflies and thus show that seasonal changes in genomic function help define the migratory state.
2009-01-01 | GSE14041 | GEO