Open AccessStability of short and long O‐chain lipopolysaccharide types in Rhizobium galegae and their correlation with symbiotic properties and growth conditions, tolerance of low pH, aluminum and salt in the growth medium
Author(s) -
Räsänen Leena A,
Lindström Kristina
Publication year - 1997
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1997.tb12680.x
Subject(s) - lipopolysaccharide , bacteria , rhizobium , strain (injury) , chemistry , salt (chemistry) , microbiology and biotechnology , osmotic shock , biochemistry , biology , food science , anatomy , genetics , gene , endocrinology
We recently showed that Rhizobium galegae strains had two different lipopolysaccharide types, short and long O‐chain. In the present study we observed that the lipopolysaccharide type was a stable feature of the strain. Both types persisted in cells at all phases of the growth cycle, during differentiation of bacteria into bacteroids and when the cells were grown under environmental stress. When R. galegae strains were grown at low pH or in medium containing aluminum or salt, simulating conditions in acid soils of temperate regions and osmotic stress, respectively, the tolerance of low pH was associated with the long O‐chain lipopolysaccharide and abundant acidic polysaccharide production.