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  • Title: Bacteriophage WO and virus-like particles in Wolbachia, an endosymbiont of arthropods.
    Author: Masui S, Kuroiwa H, Sasaki T, Inui M, Kuroiwa T, Ishikawa H.
    Journal: Biochem Biophys Res Commun; 2001 May 25; 283(5):1099-104. PubMed ID: 11355885.
    Abstract:
    Wolbachia are intracellular symbionts mainly found in arthropods, causing various sexual alterations on their hosts by unknown mechanisms. Here we report the results that strongly suggest that Wolbachia have virus-like particles of phage WO, which was previously identified as a prophage-like element in the Wolbachia genome. Wolbachia (strain wTai) infection in an insect was detected with the antibody against Wsp, an outer surface protein of Wolbachia, by fluorescence microscopy and immunoelectron-microscopy for the first time. Virus-like particles in Wolbachia were observed by electron-microscopy. The 0.22-microm filtrate of insect ovary contained DAPI-positive particles, and PCR analysis demonstrated that a phage WO DNA passed through the filter while Wolbachia DNA were eliminated, suggesting that the DAPI-positive particles were phage WO.
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