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Updated: Mar 10, 2026

Adherence of Bacteria to Plant Surfaces Measured in the Laboratory
Published on: June 19, 2018
Differential growth of bowel commensal Bacteroides species on plant xylans of differing structural complexity
Manuela Centanni1, Jennifer C Hutchison2, Susan M Carnachan2
1Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
Abstract:
Alterations to the composition of the bowel microbiota (dysbioses) are associated with particular diseases and conditions of humans. There is a need to discover new, indigestible polysaccharides which are selective growth substrates for commensal bowel bacteria. These substrates (prebiotics) could be added to food in intervention studies to correct bowel dysbiosis. A collection of commensal bacteria was screened for growth in culture using a highly-branched xylan produced by New Zealand flax. Two, Bacteroides ovatus ATCC 8483 and Bacteroides xylanisolvens DSM 18836 grew well on this substrate. The utilisation of the xylan was studied chromatographically and by constituent sugar analysis. The two closely related species utilised the xylan in different ways, and differently from their use of wheat arabinoxylan. The growth of Bacteroides species on other plant xylans having differing chemical structures was also investigated. Novel xylans expand the choice of potential prebiotics that could be used to correct bowel dysbioses.
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