Archives of Microbiology

, Volume 145, Issue 1, pp 9–12 | Cite as

Occurrence of Curtobacterium sp. possessing ω-cyclohexyl fatty acids in soil with zinc added

  • Hiroshi Ohya
  • Yutaka Komai
  • Masuro Yamaguchi
Original Papers


A bacterial strain, Curtobacterium sp., isolated from a soil with zinc added possessed ω-cyclohexyl fatty acids. ω-Cyclohexyl undecanoic acid made up 47% of the total fatty acids; it was the most abundant fatty acid in the strain grown in tryptone medium. 12-Methyl tetradecanoic acid (23%) and 14-methyl hexadecanoic acid (22%) were also major fatty acids. The proportion of ω-cyclohexyl undecanoic acid increased as the pH of the medium decreased and as the culture temperature increased.

The bacteria grew almost normally in zinc-enriched medium, and ω-cyclohexyl undecanoic acid increased with zinc concentration. Zinc added to the medium was not abundant in the cell fraction, and the ratio of increase of zinc in the cells was not so high as in the culture medium. These results suggested that ω-cyclohexyl fatty acids are related to the zinc tolerance of the isolated strain, and that this tolerance depends on low permeability of the membrane to zinc.

Key words

ω-Cyclohexyl undecanoic acid Zinc-tolerant bacteria Fatty acid composition Cyclohexyl fatty acid Bacillus acidocaldarius Curtobacterium pusillum Curtobacterium sp. 


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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Hiroshi Ohya
    • 1
  • Yutaka Komai
    • 1
  • Masuro Yamaguchi
    • 1
  1. 1.Department of Agricultural ChemistryUniversity of Osaka PrefectureSakai, OsakaJapan

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