Sequencing of variable regions of the 16S rRNA gene for identification of lactic acid bacteria isolated from the intestinal microbiota of healthy salmonids

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• 作者：Jos&#xe9 ; Luis Balc&#xe1 ; zar ; Ignacio de Blas ; Imanol Ruiz-Zarzuela ; Daniel Vendrell ; Olivia Giron&#xe9 ; s ; Jos&#xe9 ; Luis Muzquiz
• 关键词：Isolation ; Salmonids ; Lactic acid bacteria ; Identification ; DNA sequencing ; 16S rRNA gene ; Variable regions
• 刊名：Comparative Immunology ; Microbiology and Infectious Diseases
• 出版年：2007
• 期刊代码：52_01479571
• 类别：bio
• 出版时间：March 2007
• 卷：30
• 期：2
• 页码：111-118
• 文件大小：127 K

摘要

The aim of this study was to identify lactic acid bacteria (LAB) using polymerase chain reaction (PCR) amplification of variable regions of the 16S rRNA gene. Thirteen LAB strains were isolated from the intestinal microbiota of healthy salmonids. A 500-bp region of the highly conserved 16S rRNA gene was PCR-amplified and following this, a portion of the amplicon (272-bp) including the V1 and V2 variable regions was sequenced. The sequence containing both the V1 and V2 region provided strong evidence for the identification of LAB. The LAB strains were identified as Carnobacterium maltaromaticum, Lactobacillus curvatus, Lactobacillus sakei, Lactobacillus plantarum, Lactococcus lactis subsp. cremoris, Lactococcus lactis subsp. lactis, and Leuconostoc mesenteroides. The method described was found to be a very simple, rapid, specific, and low-cost tool for the identification of unknown strains of LAB.