Ontology highlight
ABSTRACT:
PROVIDER: PRJNA763985 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR16219740_1.fastq.gz | Fastqsanger.gz | |||
| SRR16219740_2.fastq.gz | Fastqsanger.gz | |||
| SRR16219741_1.fastq.gz | Fastqsanger.gz | |||
| SRR16219741_2.fastq.gz | Fastqsanger.gz | |||
| SRR16219742_1.fastq.gz | Fastqsanger.gz |
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Project description:The invasive Halyomorpha halys Stål, the Brown Marmorated Stink Bug (BMSB), and the native Nezara viridula L., the Southern Green Stink Bugs (SGSB), are widely distributed in Europe, even if the date of introduction and their diet differ. Saliva of Hemipteran pests plays an essential role in the interaction between insects and their host plants. Several aphid salivary proteomes have been identified and found to differ according to the species, while no comparative investigation between phytophagous stink bugs has been performed yet. Here we analyzed the salivary proteins from two bugs, BMSB and SGSB, using LC-MS/MS. A total of 238 and 305 proteins were identified from dissected salivary glands from BMSB and SGSB respectively. Among these, a large majority was found in both species. In comparison with salivary proteome from other Hemiptera, the most striking feature of the salivary gland proteomes from SGSB and BMSB is the similar protein functions patterns. Some of the proteins are speculated to be dependent of the feeding strategies, playing a significant role in plant-insect interactions. Our results provide a framework for future research to elucidate the molecular basis of differential impact of piercing-sucking insects on host plants.
2019-02-25 | PXD011920 | Pride
Project description:The invasive Halyomorpha halys Stål, the Brown Marmorated Stink Bug (BMSB), and the native Nezara viridula L., the Southern Green Stink Bugs (SGSB), are widely distributed in Europe, even if the date of introduction and their diet differ. Saliva of Hemipteran pests plays an essential role in the interaction between insects and their host plants. Several aphid salivary proteomes have been identified and found to differ according to the species, while no comparative investigation between phytophagous stink bugs has been performed yet. Here we analyzed the salivary proteins from two bugs, BMSB and SGSB, using LC-MS/MS. A total of 238 and 305 proteins were identified from dissected salivary glands from BMSB and SGSB respectively. Among these, a large majority was found in both species. In comparison with salivary proteome from other Hemiptera, the most striking feature of the salivary gland proteomes from SGSB and BMSB is the similar protein functions patterns. Some of the proteins are speculated to be dependent of the feeding strategies, playing a significant role in plant-insect interactions. Our results provide a framework for future research to elucidate the molecular basis of differential impact of piercing-sucking insects on host plants.
2019-02-25 | PXD011976 | Pride
Project description:A frightening resurgence of bed bug infestations has occurred over the last 10 years in the US. Current chemical methods have been inadequate for controlling bed bugs due to widespread insecticide resistance. Little is known about the mechanisms of resistance present in US bed bug populations, making it extremely difficult to develop intelligent strategies to control this pest. We have identified bed bugs collected in Richmond, VA which exhibit both kdr-type (L925I) and metabolic resistance to pyrethroid insecticides. LD50 bioassays determined resistance ratios of ~6000-fold to the insecticide deltamethrin, with contact bioassays confirming cross-resistance to several other labeled formulations. To identify metabolic genes potentially involved in the detoxification of pyrethroids, we performed deep-sequencing of the adult bed bug transcriptome, obtaining more than 2.5 million reads on the 454 titanium platform. Following assembly, analysis of newly identified gene transcripts in both Harlan (susceptible) and Richmond (resistant) bed bugs revealed several candidate cytochrome P450 and carboxyesterase genes which were significantly over-expressed in the resistant strain, consistent with the idea of increased metabolic resistance. These data will accelerate efforts to understand the biochemical basis for insecticide resistance in bed bugs, and provide molecular markers to assist in the surveillance of metabolic resistance.
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Project description:BACKGROUND: The tomato psyllid, Bactericera cockerelli Šulc (Hemiptera: Triozidae), is a pest of solanaceous crops such as tomato (Solanum lycopersicum L.) in the U.S. and vectors the disease-causing pathogen ‘Candidatus Liberibacter solanacearum’. Currently, the only effective strategies for controlling the diseases associated with this pathogen involve regular pesticide applications to manage psyllid population density. However, such practices are unsustainable and will eventually lead to widespread pesticide resistance in psyllids. Therefore, new control strategies must be developed to increase host-plant resistance to insect vectors. For example, expression of constitutive and inducible plant defenses can be improved through selection. Currently, it is still unknown whether psyllid infestation has any lasting consequences on tomato plant defense or tomato plant gene expression in general. RESULTS: To characterize the genes putatively involved in tomato defense against psyllid infestation, RNA was extracted from psyllid-infested and uninfested tomato leaves (Moneymaker) three weeks post-infestation. Transcriptome analysis identified 362 differentially expressed genes. These differentially expressed genes were primarily associated with defense responses to abiotic/biotic stress, transcription/translation, cellular signaling/transport, and photosynthesis. These gene expression changes suggested that tomato plants underwent a reduction in plant growth/health in exchange for improved defense against stress that was observable three weeks after psyllid infestation. Consistent with these observations, tomato plant growth experiments determined that the plants were shorter three weeks after psyllid infestation. Furthermore, psyllid nymphs had lower survival rates on tomato plants that had been previously psyllid infested. CONCLUSION: These results suggested that psyllid infestation has lasting consequences for tomato gene expression, defense, and growth.
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Project description:The black-footed ferret (Mustela nigripes) is a star example of the efforts of conservation programs in bringing endangered species back from the brink of extinction. As one of the world’s most endangered mammals, the vast majority of black-footed ferrets living in the wild today are the offspring of a founding captive population. The success of this ongoing breeding program, however, is threatened by inbreeding depression and the observed decline in pregnancy rates since its founding. As the wild and modern captive populations share a genetic history, the greatest difference between the two groups is the captive environment of the breeding program. In this study, we used RNA sequencing and proteomics for the first time in black-footed ferrets to explore whether the diet of wild ferrets versus captive diet variants could explain the differences in fertility and sperm characteristics observed between each population. We find that changes in both the transcriptional and proteomic profile of black-footed ferret ejaculate are strongly associated with differences in fertility, especially in pathways associated with innate immunity and metabolism; that transcriptional changes are further exacerbated by diet. Overall, our results support the hypothesis of ongoing environmental-dependent inbreeding depression in the black-footed ferret, with a need to re-evaluate dietary and environmental parameters of the conservation program; and also illustrates the value of multi-level genomics for conservation management programs.
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