Drosophila melanogaster
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA110605 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Genetic background effects contribute to the phenotypic consequences of mutations, and are pervasive across all domains of life that have been examined, yet little is known about how they modify genetic systems. In part this is due to the lack of tractable model systems that have been explicitly developed to study the genetic and evolutionary consequences of background effects. In this study we demonstrate that phenotypic expressivity of the scalloped[E3] mutation of Drosophila melanogaster is background dependent, and is the result of at least one major modifier segregating between two standard lab wild-type strains. Microarrays were used to examine the consequences of genetic background effects on the global transcriptome. Expression differences between wild-type strains were found to be as large or larger than the effects of mutations with substantial phenotypic effects, and expression differences between wild-type and mutant varied significantly between genetic backgrounds. Significantly, we demonstrate that the epistatic interaction between sd[E3] and an optomotor blind mutation is background dependent. The results are discussed within the context of developing a complex but more realistic view of the consequences of genetic background effects with respect to mutational analysis, and studies of epistasis and cryptic genetic variation segregating in natural populations Keywords: Mutant vs wild-type comparison 2 wild-type strains of D. melanogaster (Oregon-R and Samarkand, both marked with white) each with and without the scalloped[E3] mutation. Thus a 2x2 factorial design with a balanced incomplete block (block=slide) design in a full loop configuration with dye swapping.
2010-05-15 | E-GEOD-13779 | biostudies-arrayexpress
Project description:Genetic background effects contribute to the phenotypic consequences of mutations, and are pervasive across all domains of life that have been examined, yet little is known about how they modify genetic systems. In part this is due to the lack of tractable model systems that have been explicitly developed to study the genetic and evolutionary consequences of background effects. In this study we demonstrate that phenotypic expressivity of the scalloped[E3] mutation of Drosophila melanogaster is background dependent, and is the result of at least one major modifier segregating between two standard lab wild-type strains. Microarrays were used to examine the consequences of genetic background effects on the global transcriptome. Expression differences between wild-type strains were found to be as large or larger than the effects of mutations with substantial phenotypic effects, and expression differences between wild-type and mutant varied significantly between genetic backgrounds. Significantly, we demonstrate that the epistatic interaction between sd[E3] and an optomotor blind mutation is background dependent. The results are discussed within the context of developing a complex but more realistic view of the consequences of genetic background effects with respect to mutational analysis, and studies of epistasis and cryptic genetic variation segregating in natural populations Keywords: Mutant vs wild-type comparison
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Project description:H3K4me3 is a histone modification related to gene activation. LID is a demethylase acting on this residue and therefore, it could be important for proper expression of genes in Drosophila developing tissues, such as wing imaginal discs We used microarrays to analyse the changes in gene expression after lid depletion by RNAi, both in a wild type background and in a mutant background Two replicates were obtained on Nov 2010 for wild type white drosophila, GFP RNAi control and LID RNAi (on a LID mutant background).
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