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Title of Journal: Eur Food Res Technol

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Abbravation: European Food Research and Technology

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Publisher

Springer Berlin Heidelberg

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DOI

10.1002/poc.372

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ISSN

1438-2385

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The gyrase B gene as a molecular marker to resolve

Authors: ChienHsun Huang MuTzu Chang Lina Huang WenShen Chu
Publish Date: 2013/08/14
Volume: 238, Issue: 1, Pages: 27-33
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Abstract

Members of the Acetobacter pasteurianus are popular acetic acid bacteria AAB for the production of vinegar Neither phenotypic nor the most frequently applied genotypic marker 16S ribosomal DNA provides sufficient resolution for accurate identification of the AAB strains In this study the gyrB gene was used for species discrimination by direct DNA sequencing and as marker in a speciesspecific PCR assay All examined A pasteurianus strains were clearly distinguished from the closely related species by comparative sequence analysis of the gyrB gene The average sequence similarity for the gyrB gene 822  among type strains was significantly lower than that of the 16S rRNA sequence 982  Therefore the gyrB gene can be proposed as an additional molecular marker for A pasteurianus and related taxa that provides higher resolution than 16S rRNA In addition the speciesspecific primers were also developed based on the gyrB and 16S rRNA gene sequences which were then employed for PCR using the template DNA of Acetobacter strains The PCR primer pairs were shown to be specific for A pasteurianus A peroxydans and papayae Our data indicate that the phylogenetic relationships in the A pasteurianus group are easily resolved by direct sequencing of the gyrB gene and combined with speciesspecific PCR assaysWe declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work there is no professional or other personal interest of any nature or kind in any product service and/or company that could be construed as influencing the position presented in or the review of the manuscript

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