Cited by 38Probiotics and Fermented FoodsPolysaccharides Composition and ApplicationsBacterial Genetics and Biotechnology

Effect of Growth Conditions on Production of Rhamnose-Containing Cell Wall and Capsular Polysaccharides by Strains of Lactobacillus casei subsp. rhamnosus

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Wicken, A J, Ayres, A, Campbell, L K, Knox, K W·1983·Journal of Bacteriology

Abstract

Strains of Lactobacillus casei subsp. rhamnosus possessing two cell wall polysaccharides, a hexosamine-containing H-polysaccharide and a rhamnose-containing R-polysaccharide, were examined for the effect of growth conditions on the production of these two components. In strain NCTC 6375, R- and H-polysaccharides accounted for an estimated 44 and 20%, respectively, of the cell wall for organisms grown in batch culture with glucose as the carbohydrate source. Growth on fructose-containing media reduced the amount of R-polysaccharide by approximately 50% without affecting the amount of H-polysaccharide. Subculture of fructose-grown organisms in glucose restored the original proportions of the two polysaccharides. Galactose- and sucrose-grown cells behaved similarly to glucose-grown cells with respect to polysaccharide production, whereas growth in rhamnose or ribose showed values close to those for fructose-grown cells. Continuous culture of strain NCTC 6375 for more than 100 generations showed a gradual and irreversible reduction of the R-polysaccharide to less than 5% of the cell wall and an increase of the H-polysaccharide to 40% of the cell wall. Other type culture strains of L. casei subsp. rhamnosus, NCIB 7473 and ATCC 7469, behaved similarly in batch and continuous culture. In contrast, strains of L. casei subsp. rhamnosus isolated at the Institute of Dental Research showed phenotypic stability with respect to the relative proportions of R- and H-polysaccharides in both batch and continuous culture. Changes in polysaccharide composition of type culture strains were also mirrored in changes in the immunogenicity of the two components and resistance to the rate of enzymic lysis of whole organisms. For L. casei subsp. rhamnosus strain NCTC 10302 the R-polysaccharide is present entirely as capsular material. The amount of R-polysaccharide produced was also markedly dependent on the carbohydrate component of the medium in batch culture and both dilution rate and nature of the limiting carbohydrate in continuous culture, varying over a 10-fold range, whereas the cell wall H-polysaccharide remained constant.

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Crossref · 10.1128/jb.153.1.84-92.1983

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Authors
Wicken, A. J., Ayres, A., Campbell, L. K., & Knox, K. W.
Venue
Journal of Bacteriology
Published
1983-01
Volume
153
Issue
1
Pages
84-92
ISSN
  • 0021-9193 (ISSN-L)
  • 1098-5530
OpenAlex
W1586696305
Cited by
38
References
0
Citations by year
2022: 1 · 2020: 3 · 2017: 1 · 2014: 1 · 2013: 2
FWCI
4.23
Type
journal article
Language
en
Open access
Locations
  • Journal of Bacteriology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Polysaccharides Composition and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
Lactobacillus casei subsp. rhamnosus, cell wall polysaccharides, capsular polysaccharide, growth conditions, fructose, glucose, continuous culture, batch culture, phenotypic stability, immunogenicity
MeSH terms
Cell Wall, Culture Media, Fructose, Glucose, Lacticaseibacillus casei, Polysaccharides, Bacterial, Rhamnose, Sucrose

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