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Appl. Environ. Microbiol., 10 1996, 3572-3580, Vol 62, No. 10
ML Tamplin, JK Jackson, C Buchrieser, RL Murphree, KM Portier, V Gangar, LG Miller and CW Kaspar
Vibrio vulnificus belongs to the autochthonous bacterial flora of warm
estuarine waters. It can cause life-threatening extraintestinal disease in
persons who have underlying illness and who consume raw shellfish or
contact wounds with estuarine water. Currently, very little is known about
genetic diversity within this species. In this report, we describe
high-level variation in restriction fragment length polymorphism profiles
among 53 clinical and 78 environmental isolates, as determined by
pulsed-field gel electrophoresis. In contrast, ribotype profiles showed
greater similarity. When combined ribotype profiles of clinical and
environmental isolates were analyzed, four predominant clusters were
observed. Interestingly, a low number (16%) of clinical isolates were found
in cluster C, compared with clusters A, B, and D (range, 50 to 83%). In
addition, 83% of all Hawaiian isolates were located in a single cluster,
indicating a possible relationship between geography and genotype. We also
report that spontaneous translucent colonial morphotypes were distinct by
both restriction fragment length polymorphism and biochemical profiles,
compared with opaque parent strains.
Copyright © 1996, American Society for Microbiology
Pulsed-field gel electrophoresis and ribotype profiles of clinical and environmental Vibrio vulnificus isolates
Department of Home Economics, University of Florida, Gainesville 32611, USA. mlt@gnv.ifas.ufl.edu
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