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Proteomic analysis of diapause and non-diapause stages of Loxostege sticticalis

ABSTRACT: Select five different treatment groups, including fifth instar larvae, pre diapause larvae, diapause larvae, diapause release treated larvae, and post diapause released larvae, for proteomic analysis

ORGANISM(S): Loxostege Sticticalis

SUBMITTER: Linbo Xu

PROVIDER: PXD048065 | iProX | Thu Dec 21 00:00:00 GMT 2023

REPOSITORIES: iProX

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Gene expression profiling across ontogenetic stages in wood white (Leptidea sinapis) reveals pathways linked to butterfly diapause regulation.

Project description:In temperate latitudes, many insects enter diapause (dormancy) during the cold season, a period during which developmental processes come to a standstill. The wood white (Leptidea sinapis) is a butterfly species distributed across western Eurasia that shows photoperiod-induced diapause with variation in critical day-length across populations at different latitudes. We assembled transcriptomes and estimated gene expression levels at different developmental stages in experimentally induced directly developing and diapausing cohorts of a single Swedish population of L. sinapis to investigate the regulatory mechanisms underpinning diapause initiation. Different day lengths resulted in expression changes of developmental genes and affected the rate of accumulation of signal molecules, suggesting that diapause induction might be controlled by increased activity of monoamine neurotransmitters in larvae reared under short-day light conditions. Expression differences between light treatment groups of two monoamine regulator genes (DDC and ST) were observed already in instar III larvae. Once developmental pathways were irreversibly set at instar V, a handful of genes related to dopamine production were differentially expressed leading to a significant decrease in expression of global metabolic genes and increase in expression of genes related to fatty acid synthesis and sequestration. This is in line with a time-dependent (hour-glass) model of diapause regulation where a gradual shift in the concentration of monoamine neurotransmitters and their metabolites during development of larvae under short-day conditions leads to increased storage of fat, decreased energy expenditures, and ultimately developmental stasis at the pupal stage.

2018-02-02 | E-MTAB-6454 | biostudies-arrayexpress

Next generation sequencing of Coccinella septempunctata L. with non-diapause, diapause, and diapause-terminated states

Project description:The most commonÂ ladybird beetle, Coccinella septempunctata L., is an excellent predator of crop pests such as aphids and white flies, and it shows a wide range of adaptability, a large appetite and a high reproductive ability. In this study, we collected female adults in three different states, i.e., non-diapause, diapause and diapause termination, for transcriptome sequencing. The experimental insects consisted of three different states as follows: Non-diapause female insects were reared at 24Â±1Â°C, with a RH of 70Â±10% and a 16:8 h light: dark (L: D) photoperiod and collected after their first oviposition. Female adults in diapause were reared at 18Â±1Â°C at an RH of 70Â±10% and a 10:14-h (L:D) photoperiod. The experimental diapause insects were collected after 30 days. Diapause-terminated adults were transferred to another climatic cabinet with the 30-day diapause insects and reared under the same conditions as the non-diapause insects. After their first oviposition, the female insects were collected and stored at -80Â°C. Three biological replicates per treatment (non-diapause, diapause, diapause-terminated) were sequenced using Illumina HiSeq 2500.

2016-06-01 | E-GEOD-75645 | biostudies-arrayexpress

Next generation sequencing of Coccinella septempunctata L. with non-diapause, diapause, and diapause-terminated states

Project description:The most common ladybird beetle, Coccinella septempunctata L., is an excellent predator of crop pests such as aphids and white flies, and it shows a wide range of adaptability, a large appetite and a high reproductive ability. In this study, we collected female adults in three different states, i.e., non-diapause, diapause and diapause termination, for transcriptome sequencing.

2016-06-01 | GSE75645 | GEO

The effect of epigenetics on diapause of Asian corn borer larvae [WGBS]

Project description:H3K9me3 and H3K27me3 were involved in diapause regulation of O. furnacalis larvae

2023-10-17 | GSE245334 | GEO

The effect of epigenetics on diapause of Asian corn borer larvae [ChIP-seq]

Project description:H3K9me3 and H3K27me3 were involved in diapause regulation of O. furnacalis larvae

2023-10-17 | GSE245333 | GEO

Early transcriptional events linked to induction of diapause revealed by RNAseq in larvae of drosophilid fly, Chymomyza costata.

Project description:Diapause is an environmentally programmed and hormonally regulated period of dormancy which makes an important part of the life-cycle in many species of invertebrates. In this study, using a RNAseq approach, we focused on very early stages of diapause induction in the larvae of drosophilid fly, Chymomyza costata by characterizing global patterns of gene expression associated with photoperiodic induction of diapause.

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Whole body RNA-seq from developmental stages of Harpegnathos ants

Project description:RNA from Harpegnathos embryos, instar 1 larvae, instar 4 larvae, early pupae, late pupae, adult workers, and males was sequenced to look for gene expression changes throughout development.

2018-05-24 | GSE102604 | GEO

Whole body RNA-seq from developmental stages of Camponotus ants

Project description:RNA from Camponotus embryos, instar 1 larvae, instar 4 larvae, early pupae, late pupae (minor and major), adult workers, and males was sequenced to look for gene expression changes throughout development.

2018-05-24 | GSE102603 | GEO

Metabolic control over mTOR dependent diapause-like state

Project description:Regulation of embryonic diapause, dormancy that interrupts the tight connection between develop- mental stage and time, is still poorly understood. Here, we characterize the transcriptional and metabolite profiles of mouse diapause embryos and identify unique gene expression and metabolic signatures with activated lipolysis, glycolysis, and metabolic pathways regulated by AMPK. Lipolysis is increased due to mTORC2 repression, increasing fatty acids to support cell survival. We further show that starvation in pre-implantation ICM-derived mouse ESCs induces a reversible dormant state, transcriptionally mimicking the in vivo diapause stage. During starvation, Lkb1, an upstream kinase of AMPK, represses mTOR, which induces a revers- ible glycolytic and epigenetically H4K16Ac-negative, diapause-like state. Diapause furthermore activates expression of glutamine transporters SLC38A1/2. We show by genetic and small molecule inhibitors that glutamine transporters are essential for the H4K16Ac-negative, diapause state. These data sug- gest that mTORC1/2 inhibition, regulated by amino acid levels, is causal for diapause metabolism and epigenetic state.

2020-01-14 | GSE143494 | GEO

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.

2019-11-18 | PXD014384 | Pride

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