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. 1978 Aug;135(2):324–333. doi: 10.1128/jb.135.2.324-333.1978

Biodegradation of acyclic isoprenoids by Pseudomonas species.

S G Cantwell, E P Lau, D S Watt, R R Fall
PMCID: PMC222387  PMID: 681275

Abstract

The ability of various pseudomonads to utilize acyclic isoprenoids as a sole carbon source was investigated. Tests for utilization of acyclic isoprenols such as citronellol and geraniol were complicated by toxic effects of these alcohols, and most species tested were killed by exposure to citronellol or geraniol (0.1%, vol/vol) in liquid culture. In the case of Pseudomonas citronellolis, sensitivity to isoprenols is reduced by prior induction of the isoprenoid degradative pathway via either growth on succinate in the presence of citronellol or growth on citronellic acid. For this species, citronellic acid proved to be the best isoprenoid growth substrate tested. Geraniol utilization as a taxonomic indicator for different subgroups of pseudomonads is discussed. Only a few of the species tested were able to utilize acyclic isoprenoids. Two species which utilize C10 acyclic isoprenoids, P. aeruginosa and P. mendocina, were shown to contain the inducible enzyme geranyl-coenzyme A carboxylase, one of the unique enzymes in the isoprenol degradative pathway known to occur in P. citronellolis. Of the species which utilized geranitol, none showed definite growth on the homologous C15 and C20 isoprenols.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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