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ABSTRACT: Mosquito sex and active mycobiota are important drivers of fructose metabolism in the Asian tiger mosquito Aedes albopictus

PROVIDER: PRJEB45239 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR5959900_1.fastq.gz	Fastqsanger.gz
	ERR5959900_2.fastq.gz	Fastqsanger.gz
	ERR5959910_1.fastq.gz	Fastqsanger.gz
	ERR5959910_2.fastq.gz	Fastqsanger.gz
	ERR5959920_1.fastq.gz	Fastqsanger.gz

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Project description:Urban genomics of Aedes albopictus (Asian Tiger Mosquito) in Guangzhou

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Cooler temperatures destabilize RNA interference and increase susceptibility of disease vector mosquitoes to viral infection

Project description:The impact of global climate change on the transmission dynamics of infectious diseases is the subject of extensive debate. The transmission of mosquito-borne viral diseases is particularly complex, with climatic variables directly affecting many parameters associated with the prevalence of disease vectors. While evidence shows that warmer temperatures often decrease the extrinsic incubation period of an arthropod-borne virus (arbovirus), exposure to cooler temperatures often predisposes disease vector mosquitoes to higher infection rates. RNA interference pathways are essential to antiviral immunity in the mosquito; however, few experiments have explored the effects of temperature on the RNAi machinery. Total small RNAs (miRNAs, siRNAs, piRNAs, etc.) were isolated and sequenced from the heads of sensor strain Aedes aegypti mosquitoes, or from the whole bodies of CHIKV-infected Aedes albopictus mosquitoes 8 hours post infection. Mosquitoes were grown at 18C or 28C in replicates of 1 (Ae. aegypti) or 3 (Ae. albopictus).

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Project description:Population genomics of the Asian tiger mosquito, Aedes albopictus: insights into the recent worldwide invasion

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Project description:Aedes albopictus shows a rapid global expansion and dramatic vectorial capacity for various arboviruses. Mosquitoes display distinct sexual dimorphisms，only adult females consume blood meals to complete ovarian follicle development. Therefore, cyclic reproduction in female mosquitoes serves as a foundation for the transmission of numerous disease-causing pathogens. Aedes have an expansion of the piRNA biogenesis genes, indicated that piRNA may play multiple functional roles in mosquitoes. Although the antiviral function of piRNA pathway in mosquitoes has been extensively studied, the role of piRNAs in mosquito reproduction remain to be further understood. In the present study, we first profiled the characteristics of sex-biased piRNAs in adult Ae.albopictus. Then, we identified a female biased piRNA (Aalpi18529) in adult females, that was highly expressed in ovaries at blood feeding-dependent termination, and depended on PIWI5 and ago3 mediated biogenesis. Aalpi18529 overexpression suppressed ovarian development, and reduced fertility and fecundity in adult females post-bloodmeal. Furthermore, we demonstrated that Aalpi18529 can effectively repress its direct target, growth arrest and DNA-damage-inducible protein 45a (GADD45A), and eventually regulates ovarian development via the Gadd45a-mediated JNK-dependent nurse cell apoptosis pathway. Our study is the first to report an endogenous piRNA, which trigger silencing of an important protein-coding gene by posttranscriptional regulation in mosquitoes, expanding our current understanding of the important and multiple roles of piRNAs in biological processes in Ae. albopictus.

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Aalpi18529 regulates vitellogenesis of Aedes albopictus via the Gadd45a-mediated JNK-dependent nurse cell apoptosis pathway {RNA-seq]

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