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Manganese oxide biomineralization is a social trait protecting
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Zerfaß, Christian, Christie-Oleza, Joseph Alexander and Soyer, Orkun S. (2018) Manganese oxide biomineralization is a social trait protecting. Applied and Environmental Microbiology, 85 (92). e02129-18. doi:10.1128/AEM.02129-18 ISSN 0099-2240.
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Official URL: https://doi.org/10.1128/AEM.02129-18
Abstract
Manganese bio-mineralization is a widespread process among bacteria and fungi. To date there is no conclusive experimental evidence for, how and if this process impacts microbial fitness in the environment. Here we show how a model organism for manganese oxidation is growth-inhibited by nitrite, and that this inhibition is mitigated in presence of manganese. We show that such manganese-mediated mitigation of nitrite-inhibition is dependent on the culture inoculum size and that manganese oxide (MnOX) forms granular precipitates in the culture, rather than sheaths around individual cells. We provide evidence that MnOX protection involves both its ability to catalyze nitrite oxidation into (non-toxic) nitrate under physiological conditions, and its potential role in influencing processes involving reactive oxygen species (ROS). Taken together, these results demonstrate improved microbial fitness through MnOX deposition in an ecological setting, i.e. mitigation of nitrite toxicity, and point to a key role of MnOX in handling stresses arising from ROS.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > QR Microbiology | ||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Bacterial growth, Manganese oxides, Nitrites, Biomineralization | ||||||||||||||||||
Journal or Publication Title: | Applied and Environmental Microbiology | ||||||||||||||||||
Publisher: | American Society for Microbiology | ||||||||||||||||||
ISSN: | 0099-2240 | ||||||||||||||||||
Official Date: | 9 November 2018 | ||||||||||||||||||
Dates: |
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Volume: | 85 | ||||||||||||||||||
Number: | 92 | ||||||||||||||||||
Article Number: | e02129-18 | ||||||||||||||||||
DOI: | 10.1128/AEM.02129-18 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||
Date of first compliant deposit: | 6 November 2018 | ||||||||||||||||||
Date of first compliant Open Access: | 17 December 2018 | ||||||||||||||||||
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