Publications by authors named "Tuohong Liu"
Article Synopsis
- Ammonia oxidation microorganisms typically struggle in acidic conditions because protonated ammonia can't be processed by ammonia monooxygenase, which is crucial for ammonia oxidation.
- The study focused on the heterotrophic ammonia-oxidizing bacteria Pseudomonas citronellolis strain YN-21, which efficiently removed ammonia even at a low pH of 4.5 by maintaining intracellular pH neutrality through several mechanisms.
- Transcriptome analysis revealed that genes related to amino acid and nitrogen metabolism, among others, were up-regulated, enabling Pseudomonas citronellolis to thrive in acidic environments and even utilize urea as an alternative nitrogen source.
Heterotrophic nitrifying bacteria are found to be promising candidates for implementation in wastewater treatment systems due to their tolerance to extreme environments. A novel acid-resistant bacterium, Pseudomonas citronellolis YN-21, was isolated and reported to have exceptional heterotrophic nitrification capabilities in acidic condition. At pH 5, the highest NH removal rate of 7.
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