NDLI: Broad Diversity and Newly Cultured Bacterial Isolates from Enrichment of Pig Feces on Complex Polysaccharides

Content Provider	Springer Nature Link
Author	Ziemer, Cherie J.
Copyright Year	2013
Abstract	One of the fascinating functions of mammalian intestinal microbiota is fermentation of plant cell wall components. Eight-week continuous culture enrichments of pig feces with cellulose and xylan/pectin were used to isolate bacteria from this community. A total of 575 bacterial isolates were classified phylogenetically using 16S rRNA gene sequencing. Six phyla were represented in the bacterial isolates: Firmicutes (242), Bacteroidetes (185), Proteobacteria (65), Fusobacteria (55), Actinobacteria (23), and Synergistetes (5). The majority of the bacterial isolates had ≥97 % similarity to cultured bacteria with sequences in the RDP, but 179 isolates represent new species and/or genera. Within the Firmicutes isolates, most were classified in the families of Lachnospiraceae, Enterococcaceae, Staphylococcaceae, and Clostridiaceae I. The majority of the Bacteroidetes were most closely related to Bacteroides thetaiotaomicron, Bacteroides ovatus, and B. xylanisolvens. Many of the Firmicutes and Bacteroidetes isolates were identified as species that possess enzymes that ferment plant cell wall components, and the rest likely support these bacteria. The microbial communities that arose in these enrichment cultures had broad bacterial diversity. With over 30 % of the isolates not represented in culture, there are new opportunities to study genomic and metabolic capacities of these members of the complex intestinal microbiota.
Starting Page	448
Ending Page	461
Page Count	14
File Format	PDF
ISSN	00953628
Journal	Microbial Ecology
Volume Number	66
Issue Number	2
e-ISSN	1432184X
Language	English
Publisher	Springer US
Publisher Date	2013-01-29
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	Microbiology Ecology Microbial Ecology Geoecology/Natural Processes Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Soil Science Ecology Ecology, Evolution, Behavior and Systematics

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