rchaebacteria, Archaebacteria -- Host-virus relationships, Thermophilic microorganisms, Viruses -- Reproduction


Geothermal and hypersaline environments are rich in viral particles, among which spindle-shaped morphologies predominate. Currently, viruses with spindle- or lemon-shaped virions are unique to Archaea and belong to two distinct viral families. The larger of the two families, the Fuselloviridae, encompasses spindle-shaped viruses with very short tails, which infect Sulfolobus solfataricus and close relatives. Sulfolobus spindle-shaped virus 1 (SSV1) is the best-known member of the family and was one of the first hyperthermophilic archaeal viruses to be isolated. However, our knowledge of fuselloviral life cycles and the relationships between these viruses and their hosts is still limited. As a result, to establish one-step growth curves to study virus replication kinetics and to investigate the mechanism of host binding, the adsorption kinetics of wild-type SSV1 to its Sulfolobus host needed to be determined.



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