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Effect of maternal treatment on gene expression differences in Bacillus thuringiensis infected pooled larvae

ABSTRACT: This study examines gene expression differences between infected larvae from different maternal infection backgrounds to try to understand the immunological basis of invertebrate immune priming. Female Tribolium castaneum beetles were either jabbed with sterile saline, heat killed Bt, or left naïve. 15 Offspring from the first and second broods were infected with Bt and 24 hours later pooled by treatment and flash frozen Beetles from saline and primed maternal backgrounds are compared to naïve infected

ORGANISM(S): Tribolium castaneum

PROVIDER: GSE44912 | GEO | 2016/06/01

SECONDARY ACCESSION(S): PRJNA192449

REPOSITORIES: GEO

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Effect of maternal treatment on gene expression differences in Bacillus thuringiensis infected pooled larvae

Project description:This study examines gene expression differences between infected larvae from different maternal infection backgrounds to try to understand the immunological basis of invertebrate immune priming. Female Tribolium castaneum beetles were either jabbed with sterile saline, heat killed Bt, or left naÃ¯ve. 15 Offspring from the first and second broods were infected with Bt and 24 hours later pooled by treatment and flash frozen Beetles from saline and primed maternal backgrounds are compared to naÃ¯ve infected Pooled whole larvae, custom array for T. castaneum, 1 replicate per treatment comparison. Same naÃ¯ve sample used for both arrays

2016-06-01 | E-GEOD-44912 | biostudies-arrayexpress

Survey of methylomes of two beetles, Nicrophorus vespilloides and Tribolium castaneum

Project description:The presence of DNA methylation in beetles (Coleoptera) has only been investigated with bisulfite sequencing of Tribolium castaneum, which produced no evidence of DNA methylation. Here, we used whole genome bisulfite sequencing to assay if DNA methylation was present in another beetle, Nicrophorus vespilloides. We used T. castaneum as a negative control.

2015-10-21 | GSE68814 | GEO

Identification of maternally-loaded RNA transcripts in unfertilized eggs of Tribolium castaneum

Project description:Using a tiled whole-genome microarray, we found that 58.2% of Tribolium castaneum genes are maternally loaded into eggs. Comparison of known Drosophila melanogaster maternal genes to our results showed widespread conservation of maternal function with T. castaneum. We also found many T. castaneum genes with previously identified gender or tissue specific expression were also maternally loaded into eggs. The microarray design also allowed the detection of 2315 and 4060 novel transcriptionally active regions greater in length than 100 bp in unfertilized and fertilized T. castaneum eggs, respectively. The primary objective of this study was to identify expressed regions of the Tribolium castaneum genome in unfertilized and fertilized eggs using a whole-genome tiled microarray. The whole RNA of 3 samples of virgin laid eggs and 3 samples of fertilized eggs were compaired.

2013-05-06 | E-GEOD-38245 | biostudies-arrayexpress

Genome-wide survey of transcriptional differences between males and females of Tribolium castaneum, the red flour beetle

Project description:Genome-wide survey of transcriptional differences between males and females of Tribolium castaneum, the red flour beetle Four biological replicates for male and female beetles with 20 individuals per replicate. Two technical replicates, one replicate per sex. 16,434 genes/expressed non-coding regions represented twice on each array. Three 60 mer probes for most exons/expressed non-coding regions. 167,538 unique genomic probes replicated twice per array.

2010-05-26 | E-GEOD-18087 | biostudies-arrayexpress

Identification of maternally-loaded RNA transcripts in unfertilized eggs of Tribolium castaneum

2013-05-06 | GSE38245 | GEO

The within-host dynamics of infection in trans-generationally primed beetles

Project description:We report the temporal dynamics of differential gene expression between primed and unprimed beetles infected with the entomopathogen Bt

2017-02-28 | GSE95387 | GEO

Deep sequencing of small RNAs from Tribolium castaneum

Project description:Characterization of miRNAs in red flour beetle Tribolium castaneum by deep sequencing of two different RNA libraries. Sequencing of Tribolium small RNAs from adults and embryos.

2010-12-29 | E-GEOD-26036 | biostudies-arrayexpress

Deep sequencing of small RNAs from Tribolium castaneum

Project description:Characterization of miRNAs in red flour beetle Tribolium castaneum by deep sequencing of two different RNA libraries.

2010-12-29 | GSE26036 | GEO

Genome-wide survey of transcriptional differences between males and females of Tribolium castaneum, the red flour beetle

Project description:Genome-wide survey of transcriptional differences between males and females of Tribolium castaneum, the red flour beetle

2010-05-27 | GSE18087 | GEO

Immune Stimulation via Wounding Alters Chemical Profiles of Adult Tribolium castaneum

Project description:Group-living individuals experience immense risk of disease transmission and parasite infection. In social and in some non-social insects, disease control with immunomodulation arises not only via individual immune defenses, but also via infochemicals such as contact cues and (defensive) volatiles to mount a group-level immunity. However, little is known about whether activation of the immune system elicits changes in chemical phenotypes, which may mediate these responses. We here asked whether individual immune experience resulting from wounding or injection of heat-killed Bacillus thuringiensis (priming) leads to changes in the chemical profiles of female and male adult red flour beetles, Tribolium castaneum, which are non-social but gregarious. We analyzed insect extracts using GC-FID to study the chemical composition of (1) cuticular hydrocarbons (CHCs) as candidates for the transfer of immunity-related information between individuals via contact, and (2) stink gland secretions, with analysis of benzoquinones as main active compounds regulating ‘external immunity’. Despite a pronounced sexual dimorphism in CHC profiles, wounding stimulation led to similar profile changes in males and females with increases in the proportion of methyl-branched alkanes compared to naïve beetles. While changes in the overall secretion profiles were less pronounced, absolute amounts of benzoquinones were transiently elevated in wounded compared to naïve females. Responses to priming were insignificant in CHCs and secretions. We suggest that changes in different infochemicals after wounding may mediate immune status signaling in the context of both internal and external immune responses in groups of this non-social insect, thus showing parallels to social immunity.

2023-04-24 | MTBLS2277 | MetaboLights

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