Species-specific PCR determination of Listeria seeligeri
- PMID: 15501651
- DOI: 10.1016/j.resmic.2004.05.013
Species-specific PCR determination of Listeria seeligeri
Abstract
Listeria seeligeri is a non-pathogenic bacterium coming under the genus Listeria. As this bacterium resembles other Listeria species such as L. monocytogenes and L. ivanovii that are pathogenic to man and animals, it is important that rapid and precise identification techniques be available for L. seeligeri in cases where such determination is desirable. A specific molecular test on the basis of a uniquely present gene region in L. seeligeri will be of particular value under the circumstances. In this report, after comparative screening of genomic DNA from six Listeria species by dot blot hybridization, we isolated one L. seeligeri-specific clone (lse24-315) that contains an insert of 1538 bp. Using primers (lse24-315F and lse24-315R) derived from this clone, we showed that a specific PCR product of 375 bp was generated from genomic DNA of L. seeligeri strains only, but not of other Listeria species or common bacteria. Therefore, the PCR employing primers lse24-315F and lse24-315R provides a rapid, sensitive and specific method for distinguishing L. seeligeri from other Listeria and common bacteria.
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