Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Serine protease-mediated wounding identifies localized epidermal wound response genes in Drosophila melanogaster

ABSTRACT: We have used trypsin-mediated wounding to amplify the transcriptional response to clean puncture wounding. We studied the transcriptional response of clean puncture wounding and trypsin puncture wounding in relation to unwounded wild-type late-stage embryos. Trypsin puncture wounding generally increases the puncture wounding fold induction relative to unwounded controls.

ORGANISM(S): Drosophila melanogaster

SUBMITTER: Gary Hardiman

PROVIDER: E-MEXP-3755 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Serine proteolytic pathway activation reveals an expanded ensemble of wound response genes in Drosophila.

Patterson Rachel A RA Juarez Michelle T MT Hermann Anita A Sasik Roman R Hardiman Gary G McGinnis William W

PloS one 20130424 4

After injury to the animal epidermis, a variety of genes are transcriptionally activated in nearby cells to regenerate the missing cells and facilitate barrier repair. The range and types of diffusible wound signals that are produced by damaged epidermis and function to activate repair genes during epidermal regeneration remains a subject of very active study in many animals. In Drosophila embryos, we have discovered that serine protease function is locally activated around wound sites, and is a ...[more]

PMID: 23637905

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Project description:Wounding due to mechanical injury or insect feeding causes a wide array of damage to the cell including cell disruption, desiccation, metabolite oxidation, and disruption of primary metabolism. In response, plants regulate a variety of genes and metabolic pathways to cope with injury. Tomato (Solanum lycopersicum) is a model for wound signaling but few studies have examined the comprehensive gene expression profiles in response to injury. A cross-species microarray approach using the TIGR potato 10-K cDNA array was analyzed for large-scale temporal (early and late) and spatial (locally and systemically) responses to mechanical wounding in tomato leaves. These analyses demonstrated that tomato regulates many primary and secondary metabolic pathways and this regulation is dependent on both timing and location. To determine if LAP-A, a known modulator of wound signaling, influences gene expression beyond the core of late wound-response genes, changes in RNAs from healthy and wounded Leucine aminopeptidase A-silenced (LapA-SI) and wild-type (WT) leaves were examined. While most of the changes in gene expression after wounding in LapA-SI leaves were similar to WT, overall responses were delayed in the LapA-SI leaves. Moreover, two pathogenesis-related 1 (PR-1c and PR-1a2) and two dehydrin (TAS14 and Dhn3) genes were negatively regulated by LAP-A. Collectively, this study has shown that tomato wound responses are complex and that LAP-A's role in modulation of wound responses extends beyond the well-described late-wound gene core. A reference design hybridization strategy was used with WT (0-hr) being the reference RNA. The reference RNA was a pool from five WT 0-hr RNAs. RNAs from wounded or unwounded leaves labeled with Cy3 and the reference RNA labeled with Cy5 were co-hybridized to the potato cDNA array. Three dye bias experiments were performed in which WT 0-hr RNAs were labeled with Cy3 and co-hybridized with the Cy5-labeled reference RNA (WT 0-hr RNAs from a different pool). After normalization, no dye bias was detected on these experiments (p-value<0.05).

Dataset Information

Serine protease-mediated wounding identifies localized epidermal wound response genes in Drosophila melanogaster

Publications

Serine proteolytic pathway activation reveals an expanded ensemble of wound response genes in Drosophila.

Similar Datasets

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