Open AccessLow-Temperature-Induced Changes in Composition and Fluidity of Lipopolysaccharides in the Antarctic Psychrotrophic Bacterium Pseudomonas syringae
Author(s) -
Govind Kumar,
Medicharla V. Jagannadham,
Malay Kumar Ray
Publication year - 2002
Publication title -
journal of bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.652
H-Index - 246
eISSN - 1067-8832
pISSN - 0021-9193
DOI - 10.1128/jb.184.23.6746-6749.2002
Subject(s) - pseudomonas syringae , biology , bacteria , microbiology and biotechnology , pseudomonadaceae , lipopolysaccharide , pseudomonas , pseudomonadales , genetics , endocrinology
The Antarctic psychrotrophic bacterium Pseudomonas syringae was more sensitive to polymyxin B at a lower (4 degrees C) temperature of growth than at a higher (22 degrees C) temperature. The amount of hydroxy fatty acids in the lipopolysaccharides (LPS) also increased at the lower temperature. These changes correlated with the increase in fluidity of the hydrophobic phase of lipopolysaccharide aggregates in vitro.