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- Endocytobiosis and ...
- Volume 30
- Unknown mysterious ...
- Kurztitel
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Double infection of Saccamoeba by a Mimivirus-like and novel Virus-like intracytoplasmic structures
- Autor(in)
- Erschienen
- 21. Dezember 2020
- Referenz
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ECR20201211_Michel R etal
- Seitenbereich
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040-048
- Schlagwort(e)
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Mimivirus-like endoparasites, Saccamoeba lacustris as host. double infection, Rhabdovirus-like infection, no interaction
- Zusammenfsg.
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We were again able to detect mimivirus-like viruses within Saccamoeba lacustris strain “SL5” as bait from the bark of plane trees. The virus factories and capsids visualised by means of electron microscopy corresponded to the virus particles shown previously. This allowed a preliminary classification as members of the Mimiviridae. Strickingly, further virus-like structures of varying diameters from 130 to over 200 nm and a mean thickness of ~40 nm were observed for the first time. These smaller viruses were arranged in a ring-like manner around a homogeneous electron-dense zone of varying dimensions which most probably represents a virus factory. An animation generated from a tomographical reconstruction revealed that the “new viruses” are enveloped by a double unit membrane. The rosette-like virus factories were reminiscent of Rhabdoviridae, which have not yet been described in free-living amoebas so far. However, a relationship or an interaction between the Mimviridae and these novel viruses could not be observed in the current sections of these host amoebas.