Enhanced performance of “Candidatus Brocadia sinica” treating nitrogen-laden saline wastewater resulting from sorbitol addition: Enzyme activities and kinetics

Bai, Lei; Li, Jin; Biswal, Basanta Kumar; Chen, Guanghao

doi:10.1016/j.desal.2019.114304

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…Kuenenia, and polyols for Ca . Brocadia sinica. , Our genomic analysis accounted for these results, indicating the high osmoadaptative capability of Ca . Kuenenia through exogenous osmolytes.…”

Section: Discussionmentioning

confidence: 99%

“…Because anammox bacteria have group- and species-specific ecological niches, their osmoadaptation strategies and capabilities likely vary. Although systematic information and experimental evidence regarding compatible solutes is unavailable for anammox bacteria, several studies have noted that the addition of osmolytes such as glycine, glycine betaine, ectoine, and sweet-tasting C 5 and C 6 polyols , enhanced the performance of anammox reactors treating saline wastewater. However, compatible solutes for wastewater treatment are expensive, and the high cost of the osmolytes constitutes a major bottleneck for their application .…”

Section: Introductionmentioning

confidence: 99%

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Glutamate Enhances Osmoadaptation of Anammox Bacteria under High Salinity: Genomic Analysis and Experimental Evidence

Naufal

Shao

2022

Environ. Sci. Technol.

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An osmoprotectant that alleviates the bacterial osmotic stress can improve the bioreactor treatment of saline wastewater. However, proposed candidates are expensive, and osmoprotectants of anammox bacteria and their ecophysiological roles are not fully understood. In this study, a comparative analysis of 34 high-quality public metagenome-assembled genomes from anammox bacteria revealed two distinct groups of osmoadaptation. Candidatus Scalindua and Kuenenia share a close phylogenomic relation and osmoadaptation gene profile and have pathways for glutamate transport and metabolisms for enhanced osmoadaptation. The batch assay results demonstrated that the reduced Ca. Kuenenia activity in saline conditions was substantially alleviated with the addition and subsequent synergistic effects of potassium and glutamate. The operational test of two reactors demonstrated that the reduced anammox performance under brine conditions rapidly recovered by 35.7−43.1% as a result of glutamate treatment. The Ca. Kuenenia 16S rRNA and hydrazine gene expressions were upregulated significantly (p < 0.05), and the abundance increased by approximately 19.9%, with a decrease in dominant heterotrophs. These data demonstrated the effectiveness of glutamate in alleviating the osmotic stress of Ca. Kuenenia. This study provides genomic insight into group-specific osmoadaptation of anammox bacteria and can facilitate the precision management of anammox reactors under high salinity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Glutamate Enhances Osmoadaptation of Anammox Bacteria under High Salinity: Genomic Analysis and Experimental Evidence

Naufal

Shao

2022

Environ. Sci. Technol.

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“…Polyols, sugars, and amino acids are the common osmotic active molecules. Sorbitol is a usual polyol compound, and it has been proved to be simple and effective in improving the thermostability of many enzymes (Bai et al, 2020;Ge et al, 2017;Xu et al, 2021).…”

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confidence: 99%

Adding sorbitol improves the thermostability of α‐ l ‐rhamnosidase from Aspergillus niger and increases the conversion of hesperidin

Sun

Liao

et al. 2021

Journal of Food Biochemistry

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Flavonoids, a large proportion of secondary metabolites produced by higher plants (Agati et al., 2013), have an important role in organoleptic properties of various foods and physiological processes (Agati et al., 2012;Santos-Buelga & González-Paramás, 2016;Su et al., 2018). These compounds exist naturally in forms of their glycosides (Slamova et al., 2018) with low aqueous solubility and lipophilicity, and deglycosylation of flavonoids are commonly able to improve the biological activity through solubility improvement

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Simultaneous desalination and ammonia recovery using microbial electrolysis desalination and chemical-production cell: A feasibility study of alkaline soil washing wastewater

Liang

Nong

et al. 2021

Desalination

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Enhanced performance of “Candidatus Brocadia sinica” treating nitrogen-laden saline wastewater resulting from sorbitol addition: Enzyme activities and kinetics

Cited by 7 publications

References 21 publications

Glutamate Enhances Osmoadaptation of Anammox Bacteria under High Salinity: Genomic Analysis and Experimental Evidence

Glutamate Enhances Osmoadaptation of Anammox Bacteria under High Salinity: Genomic Analysis and Experimental Evidence

Adding sorbitol improves the thermostability of α‐ l ‐rhamnosidase from Aspergillus niger and increases the conversion of hesperidin

Simultaneous desalination and ammonia recovery using microbial electrolysis desalination and chemical-production cell: A feasibility study of alkaline soil washing wastewater

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