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ABSTRACT: Insights from the transcriptome and metabolome into the molecular basis of diapause in Leguminivora glycinivorella (Lepidoptera, Olethreutidae)

PROVIDER: PRJNA1246935 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR32992816_1.fastq.gz	Fastqsanger.gz
	SRR32992816_2.fastq.gz	Fastqsanger.gz
	SRR32992817_1.fastq.gz	Fastqsanger.gz
	SRR32992817_2.fastq.gz	Fastqsanger.gz
	SRR32992818_1.fastq.gz	Fastqsanger.gz

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Leguminivora glycinivorella

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Mating precedes selective immune priming which is maintained throughout bumblebee queen diapause

Project description:Diapause is a key life-history event characterised by arrested development, suppressed metabolism and increased stress tolerance. This state allows an organism to avoid prolonged periods of harsh and inhospitable environmental conditions. For species where only mated female adults undergo diapause, mating is performed prior to diapause. Mating can have a profound effect on the behaviour and physiology of females resulting in changes to the expression of key biological processes, including immunity. However, our understanding of how mating impacts long-term immunity and whether these effects persist throughout diapause is currently limited. Here we explored proteomic changes in the haemolymph of the ecologically important pollinator, Bombus terrestris. B. terrestris queens mate prior to diapause (a non-feeding arrest of development that can last 6-9 months). Using mass-spectrometry-based proteomics, we quantified changes in the pre-diapause queen haemolymph after mating, as well as the subsequent protein expression of mated queens during and post-diapause. Our results provide clear molecular evidence for the consequences and benefits of mating at the immune level through the selective increased abundance of antimicrobial peptides that are sustained throughout diapause. In addition our results provide novel insights into the molecular mechanisms by which bumblebees prepare for, survive, and recover from diapause, insights that may have implications for our general understanding of these processes in other insect groups.

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Global transcriptome analysis of orange wheat blossom midge, Sitodiplosis mosellana (Gehin) (Diptera: Cecidomyiidae) to identify candidate transcripts regulating diapause

Project description:Many insects enter a developmental arrest (diapause) that allows them to survive harsh seasonal conditions. Despite the well-established ecological significance of diapause, the molecular basis of this crucial adaptation remains largely unresolved. Sitodiplosis mosellana (Gehin), the orange wheat blossom midge (OWBM), causes serious damage to wheat throughout the northern hemisphere, and sporadic outbreaks occur in the world. Traits related to diapause appear to be important factors contributing to their rapid spread and outbreak. To better understand the diapause mechanisms of OWBM, we sequenced the transcriptome and determined the gene expression profile of this species. Examination of different gene expression in DOL and NDOL Total RNA was extracted separately from DOL and NDOL using Trizol Reagent following manufacturer’s instructions. Approximately 10μg RNA from each sample was used to construct individual DGE libraries. mRNA was isolated as described under cDNA library construction. The cDNA fragments were purified by agarose gel electrophoresis and enriched by PCR amplification. Each library had an insert size of 200 bp, and 42 - 50 bp sequences were generated by Illumina HiSeq 2000 in a single run using paired-end technology. SRA Study SRP019201.

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ATAC-sequencing of Artemia cyst in in diapause stage and 5 hours after embryonic diapause termination

Project description:Embryonic diapause is a widely occurring evolutionary adaptation phenomenon in animals. Artemia is one of the classic animal models for diapause research. The current studies of Artemia diapause mainly focus on the induction and maintenance of the embryonic diapause, but there is little research on the molecular regulatory mechanism of Artemia embryonic diapause termination (EDT) and embryonic reactivation. Here the gene expression of Artemia cyst in diapause stage and 5 hours after embryonic diapause termination (EDT), which is in post-diapause stage were tested by ATAC-seq to analyze the mechanism of signal regulation involved in Artemia EDT at the molecular level.

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