CO2- and anaerobiosis-induced changes in physiology and gene expression of different Listeria monocytogenes strains

Applied and Environmental Microbiology
Anne-Marie Jydegaard-AxelsenSusanne Knøchel

Abstract

Although carbon dioxide (CO(2)) is known to inhibit growth of most bacteria, very little is known about the cellular response. The food-borne pathogen Listeria monocytogenes is characterized by its ability to grow in high CO(2) concentrations at refrigeration temperatures. We examined the listerial responses of different strains to growth in air, 100% N(2), and 100% CO(2). The CO(2)-induced changes in membrane lipid fatty acid composition and expression of selected genes were strain dependent. The acid-tolerant L. monocytogenes LO28 responded in the same manner to CO(2) as to other anaerobic, slightly acidic environments (100% N(2), pH 5.7). An increase in the expression of the genes encoding glutamate decarboxylase (essential for survival in strong acid) as well as an increased amount of branched-chain fatty acids in the membrane was observed in both atmospheres. In contrast, the acid-sensitive L. monocytogenes strain EGD responded differently to CO(2) and N(2) at the same pH. In a separate experiment with L. monocytogenes 412, an increased isocitrate dehydrogenase activity level was observed for cells grown in CO(2)-containing atmospheres. Together, our findings demonstrate that the CO(2)-response is a partly strain-dependent...Continue Reading

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Citations

Dec 22, 2004·Journal of Applied Microbiology·L NilssonA Gravesen
Nov 23, 2006·Applied and Environmental Microbiology·Efstathios S GiotisBrian J Wilkinson
Apr 2, 2013·Canadian Journal of Microbiology·James L SmithGeorge C Paoli
Aug 29, 2012·Journal of Applied Microbiology·C Feehily, K A G Karatzas
Jan 24, 2014·Microbiology·Stefanie Müller-HerbstSiegfried Scherer
Nov 26, 2008·Advances in Applied Microbiology·Sheila RyanCormac G M Gahan
Mar 13, 2019·Microorganisms·Morgan L DavisJanet R Donaldson
Mar 16, 2017·Archives of Microbiology·Nathan WallaceYvonne Sun
Aug 28, 2021·Critical Reviews in Food Science and Nutrition·Seyed Mohammad Hassan MortazaviA Mark Osborn
Dec 7, 2021·Frontiers in Microbiology·Damayanti ChakravartyJanet R Donaldson

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