Role of Branched-Chain Fatty Acids in pH Stress Tolerance in Listeria monocytogenes-Reference-Cited by-同舟云学术

Role of Branched-Chain Fatty Acids in pH Stress Tolerance in Listeria monocytogenes

Published:2007-02 Issue:3 Volume:73 Page:997-1001
ISSN:0099-2240
Container-title:Applied and Environmental Microbiology
language:en
Short-container-title:Appl Environ Microbiol

Author:

Giotis Efstathios S.¹,McDowell David A.¹,Blair Ian S.¹,Wilkinson Brian J.²

Affiliation:

1. Food Microbiology Research Group, University of Ulster, Whiteabbey, Northern Ireland, United Kingdom

2. Microbiology Group, Illinois State University, Normal, Illinois

Abstract

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.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

Link

https://journals.asm.org/doi/pdf/10.1128/AEM.00865-06

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