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Gene Expression Networks in the Drosophila Genetic Reference Panel

ABSTRACT: Gene Expression Networks in the Drosophila Genetic Reference Panel

PROVIDER: PRJNA483441 | ENA |

REPOSITORIES: ENA

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Gene Expression Networks in the Drosophila Genetic Reference Panel

Project description:A major challenge of modern biology is to understand how naturally occurring variation in DNA sequences affects complex organismal phenotypes through networks of intermediate molecular phenotypes. Here, we performed deep RNA sequencing of 200 Drosophila Genetic Reference Panel inbred lines with complete genome sequences and mapped expression quantitative trait loci for annotated genes, novel transcribed regions (most of which are long noncoding RNAs), transposable elements and microbial species. We identified host variants affecting expression of transposable elements independent of copy number and microbiome composition. We constructed sex-specific expression quantitative trait locus regulatory networks. These networks are enriched for novel transcribed regions and target genes in heterochromatin and euchromatic regions of reduced recombination and are associated with transposable element expression. This study uncovers novel genetic features that regulate natural genetic variation of gene expression and generates testable hypotheses for future functional analyses.

2020-02-28 | GSE117850 | GEO

Extensive tissue-specific, circadian molecular variation in a Drosophila Genetic Reference Panel

Project description:We report a large-scale transcriptomic analysis of several tissues of a reference Drosophila melanogaster strain as well as 141 Drosophila Genetic Reference Panel (DGRP) lines at high temporal resolution. Comprehensive data analysis has identified thousands of genes under clock- and tissue-specific control. By using a molecular time table approach, we uncovered that >20% of probed DGRP lines exhibit aberrant circadian expression, and the genetic dissection of one line (DGRP-796) revelled disrupted circadian gene expression in all analysed tissues, revealing a novel deletion in the cry gene. Together, this study revealed extensive variation in tissue-specific circadian expression, which acts upon tissue-specific regulatory networks to generate local oscillations in gene expression. Moreover, the many other lines identified here can be now used to better understand the mechanisms underlying the molecular clock, from tissue-specific to more central mechanisms.

2020-12-10 | GSE126018 | GEO

mRNA sequence data of individual Drosophila melanogaster male and female flies from 16 Drosophila Genetic Reference Panel lines reared in replicated environments

Project description:Our primary objective was to characterize the amount of variation in transcript abundance among individual flies with identical genotypes. We also wanted to determine which analysis methods would be optimal for RNA-Seq data. To meet these objectives, we performed transcriptional profiling of whole adult individuals from 16 Drosophila Genetic Reference Panel (DGRP) lines. We quantified differential expression among genotypes, environments, and sexes.

2015-12-21 | GSE60314 | GEO

Extensive tissue-specific, circadian molecular variation in a Drosophila Genetic Reference Panel

Project description:Extensive tissue-specific, circadian molecular variation in a Drosophila Genetic Reference Panel

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Wing disc transcriptomic variation from 32 Drosophila genetic reference panel (DGRP) lines selected for a broad range of wing sizes

Project description:We performed RNA sequencing of wing discs at the wandering L3 larval stage from 32 inbred lines of Drosophila genetic reference panel (DGRP) that consists of 16 big and 16 small wing lines. We aimed to understand system-wide gene regulatory mechanisms that attain the observed natural variation in wing size including the sexual size dimorphism.

2019-02-18 | E-MTAB-7662 | biostudies-arrayexpress

PAGE: Global Reference Panel

Project description:PAGE: Global Reference Panel

| PRJNA302341 | ENA

Drosophila Genetic Reference Panel (DGRP) F1 RNA-seq - a comparison to 3prime-tag-seq variance decomposition analysis

Project description:Crosses were carried out between two pairs of lines from the Drosophila Genetic Reference Panel (DGRP): Line 765 (mother) x Line 517 (father) and Line 517 (mother) x Line 362 (father). Embryos resulting from these crosses (as well as from each of the parental lines) was collected at three stages of development: 2-4h, 6-8h, and 10-12h after egg laying. Following standard procedure, three, one-hour pre-lays were collected prior to the experiment (to synchronise embryo age) and all collections were done at 25C. Collections were also made of the reciprocal crosses at 2-4h after egg laying. To validate the variance decomposiiton analysis, we focused our attention on the primary F1 crosses 765 x 517 and 517 x 362. Estimates of line-specific expression, and associated methods, can be found as supplements to Cannavo et al.

2017-01-10 | E-MTAB-4694 | biostudies-arrayexpress