Unexpected Diversity and High Abundance of Putative Nitric Oxide Dismutase (Nod) Genes in Contaminated Aquifers and Wastewater Treatment Systems.
Baoli ZhuLauren BradfordSichao HuangAnna SzalayCarmen LeixMax WeissbachAndrás TáncsicsJörg E DrewesTillmann LüdersPublished in: Applied and environmental microbiology (2017)
NO dismutation into N2 and O2 is a novel process catalyzed by putative NO dismutase (Nod). To date, only two bacteria, the anaerobic methane-oxidizing bacterium "Ca Methylomirabilis oxyfera" and the alkane-oxidizing gammaproteobacterium HdN1, are known to harbor nod genes. In this study, we report efficient molecular tools that can detect and quantify a wide diversity of nod genes in environmental samples. A surprisingly high diversity and abundance of nod genes were found in contaminated aquifers as well as wastewater treatment systems. This evidence indicates that NO dismutation may be a much more widespread physiology in natural and man-made environments than currently perceived. The molecular tools presented here will facilitate further studies on these enigmatic microbes in the future.
Keyphrases
- wastewater treatment
- antibiotic resistance genes
- genome wide
- nitric oxide
- bioinformatics analysis
- innate immune
- genome wide identification
- heavy metals
- microbial community
- drinking water
- depressive symptoms
- anaerobic digestion
- mental health
- genome wide analysis
- climate change
- dna methylation
- hydrogen peroxide
- sewage sludge