Title
A Bifidobacterium mixed-species microarray for high resolution discrimination between intestinal bifidobacteria
Author
Boesten, R.J.
Schuren, F.H.J.
de Vos, W.M.
TNO Kwaliteit van Leven
Publication year
2009
Abstract
A genomic DNA-based microarray was constructed containing over 6000 randomly cloned genomic fragments of approximately 1-2 kb from six mammalian intestinal Bifidobacterium spp. including B. adolescentis, B. animalis, B. bifidum, B. catenulatum, B. longum and B. pseudolongum. This Bifidobacterium Mixed-Species (BMS) microarray was used to differentiate between type strains and isolates belonging to a set of nine Bifidobacterium spp. Hierarchical clustering of genomic hybridization data confirmed the grouping of the Bifidobacterium spp. according to the 16S rRNA-based phylogenetic clusters. In addition, these genomic hybridization experiments revealed high homology between the type-strain B. animalis subsp. lactis LMG18314 and B. animalis subsp. animalis LMG10508 (79%) as well as between the type strains B. longum biotype longum LMG13197 and B. longum biotype infantis LMG8811 (72%) - nevertheless, discrimination between these species was possible due to the high resolution output of the BMS-array. In addition, it was shown that the BMS-array could be used for assigning unknown Bifidobacterium isolates to a species group. Finally, a set of 54 diagnostic clones for Bifidobacterium identification was selected and sequenced to advance the understanding of the species-related differences. Remarkably, a large fraction (31%) of these was predicted to encode proteins that belong to the bifidobacterial glycobiome and another 11% had functional homology with genes involved in the protection against foreign DNA. Overall, the BMS-microarray is a high-resolution diagnostic tool that is able to facilitate the detection of strain- and species-specific characteristics of bifidobacteria. © 2008 Elsevier B.V. All rights reserved.
Subject
Biology
Biotechnology
Bifidobacterium
DNA-DNA hybridization
Genomic comparison
Microarray
bacterial DNA
RNA 16S
article
bacterial genome
bacterium identification
Bifidobacterium
Bifidobacterium adolescentis
Bifidobacterium animalis
Bifidobacterium bifidum
Bifidobacterium catenulatum
Bifidobacterium longum
Bifidobacterium pseudolongum
DNA DNA hybridization
DNA microarray
intestine flora
nonhuman
nucleotide sequence
priority journal
species identification
unindexed sequence
Animals
Bacterial Typing Techniques
Bifidobacterium
Cluster Analysis
Comparative Genomic Hybridization
DNA, Bacterial
Genome, Bacterial
Genomic Library
Intestines
Oligonucleotide Array Sequence Analysis
Phylogeny
RNA, Ribosomal, 16S
Species Specificity
Bifidobacterium
Bifidobacterium adolescentis
Bifidobacterium animalis
Bifidobacterium animalis subsp. animalis
Bifidobacterium animalis subsp. lactis
Bifidobacterium bifidum
Bifidobacterium catenulatum
Bifidobacterium longum
Bifidobacterium pseudolongum
Mammalia
To reference this document use:
http://resolver.tudelft.nl/uuid:e8c78ba0-2e41-4855-a626-86122981aef7
DOI
https://doi.org/10.1016/j.mimet.2008.12.006
TNO identifier
241428
ISSN
0167-7012
Source
Journal of Microbiological Methods, 76 (3), 269-277
Document type
article