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| Content Provider | PubMed Central |
|---|---|
| Author | Arturo, Reyes-ramírez Ibarra, Jorge E. |
| Abstract | Practically all Bacillus thuringiensis strains contain a set of self-replicating, extrachromosomal DNA molecules or plasmids, which vary in number and size in the different strains. The plasmid patterns obtained from gel electrophoresis have previously been used as a tool to characterize strains, but comparison of the plasmid patterns has been limited in the number and diversity of strains analyzed. In this report, we were able to compare the plasmid patterns of 83 type strains (out of 84) and 47 additional strains from six serotypes. The information obtained from this comparison showed the importance of this tool as a strain characterization procedure and indicates the complexity and uniqueness of this feature. For example, with one exception, all type strains showed a unique plasmid pattern. All were unique in such a way that none showed even a single comigrating plasmid in the agarose gels, and therefore, cluster analysis was impossible, indicating that plasmid patterns are qualitative rather than quantitative features. Furthermore, comparison between strains belonging to the same serotype showed a great difference in variability. Some serotypes (e.g., israelensis) showed the same basic pattern among all its strains, while other serotypes (e.g., morrisoni) showed a great diversity of patterns. These results indicate that plasmid patterns are valuable tools to discriminate strains below the serotype level. |
| Related Links | http://dx.doi.org/10.1128/aem.02133-07 |
| Ending Page | 129 |
| Page Count | 5 |
| Starting Page | 125 |
| File Format | |
| ISSN | 00992240 |
| e-ISSN | 10985336 |
| Journal | Applied and Environmental Microbiology |
| Issue Number | 1 |
| Volume Number | 74 |
| Language | English |
| Publisher | American Society for Microbiology (ASM) |
| Publisher Date | 2008-01-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Microbiology (ASM) |
| Subject Keyword | Biotechnology Food Science Ecology Applied Microbiology and Biotechnology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Food Science Applied Microbiology and Biotechnology Biotechnology |
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