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Updated: Apr 19, 2026
Generation of Monoclonal Cultures from Wolbachia-infected Drosophila melanogaster JW18 Cell Line
Published on: June 27, 2025
Wolbachia-driven host miRNAs mediate arthropod reproduction in a Wolbachia density-dependent manner
Yi-Yin Zhang1, Xin-Yu Shen1, Xiao-Hui Xiong1
1Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China.
Abstract:
Wolbachia is a widespread endosymbiont and a promising tool for pest control due to its ability to manipulate arthropod reproduction. However, how Wolbachia shapes host microRNA regulation remains poorly understood. Here, we profile the Wolbachia-driven host miRNAs using small RNA-seq in spider mite Tetranychus truncatus to uncover their roles in reproduction and symbiosis. Enrichment analyses of predicted miRNA targets suggest that Wolbachia-driven miRNAs may be involved in Wolbachia-host interactions. Functional assays show that several Wolbachia-driven miRNAs influence host fecundity, with some also affecting Wolbachia density. Inhibition of novel-33 or novel-40 reduces host fecundity and is accompanied by reduced Wolbachia density, whereas inhibition of novel-65 reduces fecundity without altering density. These findings indicate that specific miRNAs contribute to the regulation of reproduction and Wolbachia density in T. truncatus, highlighting host miRNAs regulated by Wolbachia as a mechanism of host manipulation and offering opportunities for Wolbachia-based pest management.
Insights
Wolbachia bacteria manipulate spider mite reproduction by altering host microRNAs (miRNAs). Specific miRNAs regulate fecundity and bacterial density, offering new pest control strategies.
Area of Science:
- Entomology
- Microbiology
- Genetics
Background:
- Wolbachia endosymbionts manipulate arthropod reproduction, showing potential for pest control.
- The impact of Wolbachia on host microRNA (miRNA) regulation is not well understood.
Purpose of the Study:
- To profile Wolbachia-induced host miRNAs in Tetranychus truncatus.
- To investigate the roles of these miRNAs in host reproduction and symbiosis.
Main Methods:
- Small RNA sequencing (small RNA-seq) was used to identify miRNAs in spider mites.
- Bioinformatic analyses predicted miRNA targets.
- Functional assays were conducted to assess miRNA functions.
Main Results:
- Wolbachia-driven miRNAs were identified, with predicted targets involved in host-symbiont interactions.
- Several Wolbachia-induced miRNAs were found to affect spider mite fecundity and Wolbachia density.
- Inhibiting specific miRNAs (novel-33, novel-40) reduced fecundity and Wolbachia density, while inhibiting novel-65 reduced fecundity only.
Conclusions:
- Specific host miRNAs regulated by Wolbachia play crucial roles in controlling reproduction and endosymbiont density in Tetranychus truncatus.
- These findings highlight miRNA-mediated host manipulation by Wolbachia.
- This research provides insights for developing novel Wolbachia-based pest management strategies.
