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Journal of Bacteriology, August 1999, p. 4505-4508, Vol. 181, No. 15
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Isolation of Additional Bacteriophages with Genomes of Segmented Double-Stranded RNA

Leonard Mindich,1,* Xueying Qiao,1 Jian Qiao,1 Shiroh Onodera,1 Martin Romantschuk,2 and Deborah Hoogstraten1

Department of Microbiology, Public Health Research Institute, New York, New York 10016,1 and Department of Biosciences, Division of General Microbiology, University of Helsinki, Helsinki, Finland2

Received 15 March 1999/Accepted 26 May 1999

Eight different bacteriophages were isolated from leaves of Pisum sativum, Phaseolus vulgaris, Lycopersicon esculentum, Daucus carota sativum, Raphanus sativum, and Ocimum basilicum. All contain three segments of double-stranded RNA and have genomic-segment sizes that are similar but not identical to those of previously described bacteriophage phi 6. All appear to have lipid-containing membranes. The base sequences of some of the viruses are very similar but not identical to those of phi 6. Three of the viruses have little or no base sequence identity to phi 6. Two of the viruses, phi 8 and phi 12, contain proteins with a size distribution very different from that of phi 6 and do not package genomic segments of phi 6. Whereas phi 6 attaches to host cells by means of a pilus, several of the new isolates attach directly to the outer membrane. Although the normal hosts of these viruses seem to be pseudomonads, those viruses that attach directly to the outer membrane can establish carrier states in Escherichia coli or Salmonella typhimurium. One of the isolates, phi 8, can form plaques on heptoseless strains of S. typhimurium.

* Corresponding author. Mailing address: Public Health Research Institute, 455 First Ave., New York, NY 10016. Phone: (212) 578-0845. Fax: (212) 578-0804. E-mail: mindich{at}phri.nyu.edu.

Journal of Bacteriology, August 1999, p. 4505-4508, Vol. 181, No. 15
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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