Peculiarities of fatty acid composition of the genusCaulobacter |
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Authors: | L V Andreev V N Akimov D I Nikitin |
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Affiliation: | 1. Institute of Biochemistry and Physiology of Microorganisms, USSR Academy of Sciences, 142 292, Pushchino, Moscow region, USSR 2. Institute of Microbiology, USSR Academy of Sciences, Moscow, USSR
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Abstract: | The fatty acid composition of 35 strains of stalked bacteria belonging to 17 of the hitherto described 19 species and 10 unidentified strains of the genusCaulobacter was studied. ll-Methyl-cis-octadec-11-enoic acid presumably synthesized fromcis-vaccenic acid was detected in all the strains in amounts of 0.4 – 34.7 % and was considered as a chemotaxonomic marker of the genus. During growth on a peptone-yeast medium, the caulobacters synthesized, along with the fatty acids which are typical of gram-negative bacteria, some normal and branched fatty acids with 15 and 17 carbon atoms (1–49 %). The synthesis of these acids was inhibited by glucose. The cell shape of stalked bacteria (fusiform, vibrioid or bacteroid) is not obviously associated with the contents of individual fatty acids. |
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