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| Content Provider | PubMed Central |
|---|---|
| Author | Brauns, L. A. Hudson, M. C. Oliver, J. D. |
| Abstract | Vibrio vulnificus is a human pathogen associated with consumption of raw oysters. During the colder months the organism apparently enters a viable but nonculturable state and thus cannot be cultured by ordinary bacteriological methods. For this reason, another means of detecting this bacterium is necessary. In the present study we utilized the polymerase chain reaction (PCR) to detect V. vulnificus DNA, thus eliminating the problem of nonculturability. DNA from both culturable and nonculturable cells of V. vulnificus was amplified by PCR with primers flanking a 340-bp fragment of the cytotoxin-hemolysin gene. As little as 72 pg of DNA from culturable cells and 31 ng of DNA from nonculturable cells could be detected. Fifty cycles of a two-step reaction (30 s [each] at 94 and 65 degrees C) were found to be optimal as well as more time efficient than the three-step PCR. The total procedure from the point of DNA extraction to observation on a gel required less than 8 h. Possible reasons for the difficulties encountered in amplifying DNA from nonculturable cells, e.g., gene rearrangement or loss of the hemolysin gene, are discussed. |
| Starting Page | 2651 |
| File Format | |
| ISSN | 10985336 |
| e-ISSN | 10985336 |
| Journal | Applied and Environmental Microbiology |
| Issue Number | 9 |
| Volume Number | 57 |
| Language | English |
| Publisher Date | 1991-09-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Food Science Applied Microbiology and Biotechnology Biotechnology |
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