Phylogenetic relationships of butyrate-producing bacteria from the human gut

Article Abstract:

Of 313 butyrate-producing bacteria isolated from fecal samples of three people, 80% fell within the XIVa cluster of gram-positive bacteria. Most of the isolates were related to known species, but many represented new uncharacterized phylogenetic groups.

Phylogeny

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Lactate-utilizing bacteria, isolated from human feces, that produce butyrate as a major fermentation product

Article Abstract:

The isolation of bacteria from human feces that can convert lactate largely into butyrate is reported. The study identified several abundant groups of lactate-utilizing bacteria belonging to clostridial cluster XIVa from human feces for which butyrate is a major product.

Science & research, Observations, Bacteria, Feces, Microbiological research

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Molecular analysis of the microbial diversity present in the colonic wall, colonic lumen, and cecal lumen of a pig

Article Abstract:

Molecular analysis has been carried out for study of microbial diversity in the colonic wall, colonic lumen, and cecal lumen of the pig. This is the first effort to identify the main types of bacteria by direct retrieval and analysis of small-subunit ribosomal DNA (rDNA) sequences, free of cultural bias and to compare with cultured pig colon isolates. A significant part of the microbial diversity, especially that of the colonic wall sample, is related only distantly to cultured bacterial types, the sequences of which are in databases. Phylogenetic analysis is used to find the positions of the unidentified bacterial strains relative to known rDNA sequences.

United Kingdom, Scotland, Statistical Data Included, Usage, Physiological aspects, Swine, Cytochemistry, Cladistic analysis, Ribosomes

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