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Journal of Virology, November 1998, p. 9392-9395, Vol. 72, No. 11
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

His1, an Archaeal Virus of the Fuselloviridae Family That Infects Haloarcula hispanica

Carolyn Bath and Michael L. Dyall-Smith*

Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria 3052, Australia

Received 13 May 1998/Accepted 16 July 1998

A novel archaeal virus, His1, was isolated from hypersaline waters in southeastern Australia. It was lytic, grew only on Haloarcula hispanica (titers of up to 1011 PFU/ml), and displayed a lemon-shaped morphology (74 by 44 nm) previously reported only for a virus of the extreme thermophiles (SSV1). The density of His1 was approximately 1.28 g/ml, similar to that of SSV1 (1.24 g/ml). Purified particles were resistant to low salt concentrations. The genome was linear, double-stranded DNA of 14.9 kb, similar to the genome of SSV1 (15.5 kb). Morphologically, this isolate clearly belongs to the recently proposed Fuselloviridae family of archaeal viruses. It is the first member of this family from the extremely halophilic archaea, and its host, H. hispanica, can be readily manipulated genetically.

* Corresponding author. Mailing address: Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria 3052, Australia. Phone: 613 9 344-5693. Fax: 613 9 347-1540. E-mail: m.dyall-smith{at}microbiology.unimelb.edu.au.

Journal of Virology, November 1998, p. 9392-9395, Vol. 72, No. 11
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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Copyright © 1998 by the American Society for Microbiology. All rights reserved.