Brucella spp. are facultative anaerobic bacteria under denitrifying conditions

Respiration is a fundamental and complex process that bacteria use to produce energy. Despite aerobic respiration being the most common, some bacteria make use of a mode of respiration in the absence of oxygen, called anaerobic respiration, which can yield advantages in adaptation to various environ...

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Published inMicrobiology spectrum Vol. 11; no. 6; p. e0276723
Main Authors Freddi, Luca, de la Garza-García, Jorge A, Al Dahouk, Sascha, Occhialini, Alessandra, Köhler, Stephan
Format Journal Article
LanguageEnglish
Published United States American Society for Microbiology 26.10.2023
Subjects
anoxia
Bacteriology
Brucella
denitrification
facultative anaerobic
Life Sciences
nitrate reductase
nitrite reductase
Research Article
anoxia
nitrous oxide reductase
Brucella
nitrite reductase
nitrate reductase
denitrification
facultative anaerobic
nitric oxide reductase
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Summary:Respiration is a fundamental and complex process that bacteria use to produce energy. Despite aerobic respiration being the most common, some bacteria make use of a mode of respiration in the absence of oxygen, called anaerobic respiration, which can yield advantages in adaptation to various environmental conditions. Denitrification is part of this respiratory process ensuring higher respiratory flexibility under oxygen depletion. Here, we report for the first time the evidence of anaerobic growth of spp. under denitrifying conditions, which implies that this genus should be reconsidered as facultative anaerobic. Our study further describes that efficient denitrification is not equally found within the genus, with atypical species showing a greater ability to denitrify, correlated with higher expression of the genes involved, as compared to classical species.
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The authors declare no conflict of interest.
Present address: Unité des Zoonoses Bactériennes, ANSES, Maisons-Alfort, France
Present address: Indical Bioscience GmbH, Leipzig, Germany
ISSN:2165-0497
2165-0497
DOI:10.1128/spectrum.02767-23