Abstract
In alkaline conditions, Listeria monocytogenes cells develop higher proportions of branched-chain fatty acids (FAs), including more anteiso forms. In acid conditions, the opposite occurs. Reduced growth of pH-sensitive mutants at adverse pH (5.0/9.0) was alleviated by the addition of 2 -methylbutyrate (an anteiso-FA precursor), suggesting that anteiso-FAs are important in adaptation to adverse pH. The balance between anteiso- and iso-FAs may be more important than changes in the amounts and/or degrees of saturation of FAs in pH adaptation.
| Original language | English |
|---|---|
| Pages (from-to) | 997-1001 |
| Journal | Applied and Environmental Microbiology |
| Volume | 73 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published (in print/issue) - 2007 |
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Keywords
- membrane-lipid-composition
- streptococcus-mutans
- bacillus-subtilis
- escherichia-coli
- enhance survival
- low-temperatures
- growth
- adaptation
- resistance
- biosynthesis