Indication for Co-evolution of Lactobacillus johnsonii with its hosts.

ABSTRACT:

Background

The intestinal microbiota, composed of complex bacterial populations, is host-specific and affected by environmental factors as well as host genetics. One important bacterial group is the lactic acid bacteria (LAB), which include many health-promoting strains. Here, we studied the genetic variation within a potentially probiotic LAB species, Lactobacillus johnsonii, isolated from various hosts.

Results

A wide survey of 104 fecal samples was carried out for the isolation of L. johnsonii. As part of the isolation procedure, terminal restriction fragment length polymorphism (tRFLP) was performed to identify L. johnsonii within a selected narrow spectrum of fecal LAB. The tRFLP results showed host specificity of two bacterial species, the Enterococcus faecium species

SUBMITTER: Buhnik-Rosenblau K 

PROVIDER: S-EPMC3503616 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature