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Drosophila mauritiana

ABSTRACT: Sibling species of Drosophila melanogaster used in the study of mariner transposable elements

PROVIDER: PRJNA12465 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR128266_1.fastq.gz	Fastqsanger.gz
	DRR128266_2.fastq.gz	Fastqsanger.gz
	DRR128267_1.fastq.gz	Fastqsanger.gz
	DRR128267_2.fastq.gz	Fastqsanger.gz
	DRR128268_1.fastq.gz	Fastqsanger.gz

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Comparison of D. simulans/D. mauritiana F1 male hybrid genome-wide expression values to pure-species parents

Project description:Species often produce sterile hybrids early in their evolutionary divergence, and some evidence suggests that hybrid sterility may be associated with deviations or disruptions in gene expression. In support of this idea, many studies have shown that a high proportion of male-biased genes are underexpressed compared to non-sex-biased genes in sterile F1 male hybrids of Drosophila species. In this study, we examined and compared patterns of misexpression in 4 day old sterile male F1 hybrids of Drosophila simulans and its sibling species, D. mauritiana. We analyzed hybrids using genome-wide D. melanogaster arrays from the Drosophila Genome Resource Center (DGRC). The results from a custom array (GPL4022) for this species pair, from the custom array and the genome-wide array for the D. simulans-D. sechellia species pair, and from the larvae of these two species pairs using the custom array, are presented separately. Keywords: Comparison of pure-species Drosophila expression to hybrid expression

2006-09-13 | GSE5601 | GEO

Comparison of D. simulans/D. mauritiana F1 male hybrid custom expression values to pure-species parents

Project description:Species often produce sterile hybrids early in their evolutionary divergence, and some evidence suggests that hybrid sterility may be associated with deviations or disruptions in gene expression. In support of this idea, many studies have shown that a high proportion of male-biased genes are underexpressed compared to non-sex-biased genes in sterile F1 male hybrids of Drosophila species. In this study, we examined and compared patterns of misexpression in 4 day old sterile male F1 hybrids of Drosophila simulans and its sibling species, D. mauritiana. We analyzed hybrids using custom cDNA arrays we developed from RT-PCRs of spermatogenesis-related transcripts from these species and another sibling species (D. sechellia). The results from a commercial genome-wide array for this species pair, from the custom chip and the genome-wide chip for the D. simulans-D. sechellia species pair, and from the larvae of these two species pairs using the custom chip, is presented separately. Keywords: Comparison of pure-species Drosophila expression to hybrid expression

2006-09-13 | GSE5599 | GEO

Drosophila melanogaster

Project description:Co-evolution of transposable elements and piRNAs in Drosophila melanogaster

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Comparison of D. simulans/D. mauritiana F1 third instar male larvae hybrid expression values to pure-species parents

Project description:Species often produce sterile hybrids early in their evolutionary divergence, and some evidence suggests that hybrid sterility may be associated with deviations or disruptions in gene expression. In support of this idea, many studies have shown that a high proportion of male-biased genes are underexpressed compared to non-sex-biased genes in sterile F1 male hybrids of Drosophila species. In this study, we examined and compared patterns of misexpression in F1 hybrid male third instar larvae of Drosophila simulans and its sibling species, D. mauritiana. We analyzed hybrids using custom cDNA arrays we developed from RT-PCRs of spermatogenesis-related transcripts from these species and another sibling species (D. sechellia). The results from a commercial genome-wide array and custom chip for adults of this species pair, from the custom chip and the genome-wide chip for adults of the D. simulans-D. sechellia species pair, and from the larvae of the D. simulans-D. sechellia species pair, are presented separately. Keywords: Comparison of pure-species Drosophila expression to hybrid expression

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Transcription profiling of males from Drosophila simulans, Drosophila mauritiana, Drosophila melanogaster, Drosophila santomea, Drosophila sechellia, Drosophila teissieri, Drosophila yakuba

Project description:Co-expression of genes that physically cluster together is a common characteristic of eukaryotic transcriptomes. Identifying these groups of co-expressed genes is important to the functional annotation of genomes and understanding the evolutionary fates of the clustered genes. We used microarrays to measure gene expression in seven closely related Drosophila species, to identify domains clusters within a species of Drosophila (D. simulans) and that are evolving among species in the D. melanogater subgroup. Experiment Overall Design: Assays were carried out on three independent (biological) replicates per species for a single line of the following five species: D.yakuba (Tuscon Stock Center Number: 14021-0261.00), D.santomea (TSCN: 14021-0271.00), D.teissieri (TSCN: 14021-0257.00), D.mauritiana (David 105, TSCN: 14021-0241.01), D.sechellia (Roberstson, TSCN: 14021-0248.21). Three biological replicates for D.melanogaster. The samples assayed for D.melanogaster reflect an even genotypic contribution of 10 isogenic lines developed from a wild population (Winters, CA) and crossed in a round-robin design.For D. simulans, three replicate arrays were used to assay each of 10 round-robin crosses between 10 isogenic lines developed from the same population. the entire data set therefore included a total of 48 independent transcript assays covering seven Drosophila species in the D.melanogaster subgroup

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The Drosophila speciation factor HMR localizes to genomic insulator sites

Project description:Hybrid incompatibility between Drosophila melanogaster and D. simulans is caused by a lethal interaction of the proteins encoded by the Hmr and Lhr genes. In D. melanogaster the loss of HMR results in mitotic defects, an increase in transcription of transposable elements and a deregulation of heterochromatic genes. To investigate the molecular mechanisms that mediate HMRs function, we measured genome-wide localization of HMR in D. melanogaster by chromatin immunoprecipitation. Interestingly, we find HMR localizing to genomic insulator sites that can be classified into two groups. One group that belongs to the gypsy class of insulators and another one that separates HP1a binding regions from active promoters. The activity of these promoters is strongly affected in Hmr mutant flies. Our data provide a novel link between HMR and insulator proteins and suggest a key role for genome organization in the formation of species.

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