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Plasmid diversity within the genus Chlamydia

Lookup NU author(s): Dr Meryl Lusher


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Examination of 12 Chlamydia psittaci strains recovered from nine different host species (three avian and six mammalian) revealed the presence of a 7ยท5 kb plasmid in all isolates except two ovine abortion strains, the human strain IOL207 and the Cal 10 strain. Restriction mapping analysis distinguished four different plasmids that were associated with avian, feline, equine and guinea-pig C. psittaci isolates, respectively. The restriction maps of these four C. psittaci plasmid types all differed from that of the plasmid recovered from C. trachomatis L2/434. Despite this plasmid diversity, which is likely to be of taxonomic importance, all four plasmids identified within the species C. psittaci were found to share some sequence homology, which was mapped to two separate regions in the plasmid molecules. One region, which showed a high degree of homology between C. psittaci plasmids and also detectable homology with the C. trachomatis plasmid, may represent a common replication control region for plasmids of this genus.

Publication metadata

Author(s): Lusher ME, Storey CC, Richmond SJ

Publication type: Article

Publication status: Published

Journal: Journal of General Microbiology

Year: 1989

Volume: 135

Issue: 5

Pages: 1145-51

ISSN (print): 0022-1287

ISSN (electronic): 1465-2080

Publisher: Society for General Microbiology


DOI: 10.1099/00221287-135-5-1145


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