Dominance of<i>Candidatus saccharibacteria</i>in SBRs achieving partial denitrification: effects of sludge acclimating methods on microbial communities and nitrite accumulation

Wang, Xiu‐Jie; Wang, Weiqi; Zhang, Jing; Wang, Siyu; Li, Jun

doi:10.1039/c8ra09518c

Cited by 45 publications

(3 citation statements)

References 35 publications

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“…NIBRBAC000502772 [ 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 ]. Bacterial taxa with nitrogen-related capabilities (nitrogen fixer, nitrogen reducer) are Gaiella occulta , Nitrospira japonica , Clostridium magnum , Candidatus Saccharibacteria , Geobacter sp., Microvirga ossetica , Azospira restricta , Nitrosospira multiformis , Paenibacillus massiliensis , Paenibacillus xylanilyticus , Microvirga zambiensis , Aromatoleum aromaticum , and Bacillus megaterium [ 50 , 59 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 ]. For the non-autoclaved cover crop treatment, alfalfa’s rhizosphere bacteriome is the treatment that overlaps with the no crop control the least ( Figure 7 A), and the lack of bacteria species in higher abundancies that are common among multiple cover crops of three or more are few, indicating that there are multiple bacteriomes that can alleviate RS with relatively minimal shifts.…”

Section: Discussionmentioning

confidence: 99%

A Microbiological Approach to Alleviate Soil Replant Syndrome in Peaches

et al. 2023

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Replant syndrome (RS) is a global problem characterized by reduced growth, production life, and yields of tree fruit/nut orchards. RS etiology is unclear, but repeated monoculture plantings are thought to develop a pathogenic soil microbiome. This study aimed to evaluate a biological approach that could reduce RS in peach (Prunus persica) orchards by developing a healthy soil bacteriome. Soil disinfection via autoclave followed by cover cropping and cover crop incorporation was found to distinctly alter the peach soil bacteriome but did not affect the RS etiology of RS-susceptible ‘Lovell’ peach seedlings. In contrast, non-autoclaved soil followed by cover cropping and incorporation altered the soil bacteriome to a lesser degree than autoclaving but induced significant peach growth. Non-autoclaved and autoclaved soil bacteriomes were compared to highlight bacterial taxa promoted by soil disinfection prior to growing peaches. Differential abundance shows a loss of potentially beneficial bacteria due to soil disinfection. The treatment with the highest peach biomass was non-autoclaved soil with a cover crop history of alfalfa, corn, and tomato. Beneficial bacterial species that were cultivated exclusively in the peach rhizosphere of non-autoclaved soils with a cover crop history were Paenibacillus castaneae and Bellilinea caldifistulae. In summary, the non-autoclaved soils show continuous enhancement of beneficial bacteria at each cropping phase, culminating in an enriched rhizosphere which may help alleviate RS in peaches.

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Section: Discussionmentioning

confidence: 99%

A Microbiological Approach to Alleviate Soil Replant Syndrome in Peaches

et al. 2023

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“…Due to the diverse necessities for environmental conditions, these two processes cannot occur simultaneously, but can only sequentially, that is, the nitrification reaction occurs under aerobic conditions, and the denitrification reaction occurs under anoxic or anaerobic conditions (Mrkonjic et al, 2007). Generally, the biological denitrification processes developed from this separate the anoxic zone from the aerobic zone, forming a hierarchical nitrification and denitrification process, so that nitrification and denitrification can be carried out independently (Xiujie et al, 2019). There has been lot of work on this research of microorganisms involved in these processes but still there is gap as biotechnology is involved in environment field.…”

Section: Denitrification Microbiologymentioning

confidence: 99%

“…Several enzymes which catalyze these reactions contain nitrite reductase, nitrate reductase, nitrous oxide reductase and nitric oxide reductase. These enzymes are synthesized when conditions are favorable for denitrification (Xiujie, et al, 2019). The process of enzyme synthesis is typically a highly regulated process and the enzymes are inducible.…”

Section: Role Of Enzymes In Nitrogen Removalmentioning

confidence: 99%

A review on application of external carbon sources for denitrification for wastewater treatment

2022

Global NEST: The International Journal

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<p>With the increase in industrial and agricultural activities, huge amount of wastewater containing nitrogen is produced. Biological denitrification is currently the most widely used, sustainable and cost-effective process to remove nitrogen from wastewater. In biological denitrification, application of external carbon sources for denitrification is important because it is the way to boost the denitrification process and it is necessary for wastewater treatment plants that have to meet very stringent effluent nitrogen limits. This review study focused with treatment of wastewater using biological denitrification as advantages. This also deals with advantages of different external carbon sources with emphasis on biological denitrification as the cost of biological denitrification is controlled by the carbon source because the cost of biological denitrification is controlled by the carbon source.. Hence, use of alternative carbon sources such as agricultural wastes, and food waste is reviewed in this paper. This study recommend other waste material such as textile waste can be a part of denitrification because carbon source such as methanol, ethanol and acetic acid/acetate can be recovered from textile waste.</p>

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Metagenome metabolic analysis revealing the mechanism of simultaneous methanogenesis, aerobic methane oxidation and denitrification (SMAMOD) in a microaerobic up‐flow sludge bed biofilm reactor

Zhou

Yin

Daling

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUNDImproved denitrification with methane as alternative electron donor is regarded as a promising low‐cost approach for organic nitrate‐containing wastewater treatment. However, in situ capture of methane released from a methanogenic system for enhancing nitrogen removal seems to be scarcely reported. The applications of simultaneous denitrification, methanogenesis, and aerobic methane oxidation coupled to denitrification provide the possibility for solving the challenging issue.RESULTSIn this study, simultaneous methanogenesis, aerobic methane oxidation, and denitrification (SMAMOD) was firstly established in a microaerobic up‐flow sludge bed biofilm reactor (MUSBBR) treating high‐strength synthetic wastewater with 2000 mg L−1 Chemical oxygen demand (COD) and 400 mg L−1 nitrate. The operation demonstrated 98.8% COD, 98.8% NO3−‐N, and 93.5% TN removals were stably obtained. Microbial community found the coexistence and cooperation of Methanothrix as methanogens, Methylogaea as aerobic methanotrophs, as well as facultative denitrification genera in SMAMOD system. Gene profiling demonstrated key functional genes involved in aerobic and anaerobic fermentation, methanogenesis and aerobic methane oxidation, as well as nitrate reduction induced by nitrate reductase systems. In organic oxygen‐limited biotransformation, glucose was degraded mainly through aerobic respiration, anaerobic fermentation into methane by decarboxylation of acetic acid, and further methane aerobic oxidation pathways, while acetate‐ and methanol‐denitrification and dissimilatory nitrate reduction to ammonium pathways participated in the nitrogen bioconversion. Further, the metabolic mechanism of SMAMOD might be unraveled by spatial interactions of key metagenomes in core microbial consortiums in the MUSBBR reactor.CONCLUSIONThe study offers valuable metagenomic insights into SMAMOD as a potentially compact process for sustainable treatment of high‐strength organic nitrate‐containing wastewater. © 2020 Society of Chemical Industry

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Dominance ofCandidatus saccharibacteriain SBRs achieving partial denitrification: effects of sludge acclimating methods on microbial communities and nitrite accumulation

Abstract: Partial denitrification (NO3−-N → NO2−-N) was combined with anaerobic ammonium oxidation (ANAMMOX) to achieve nitrogen removal with a low C/N ratio and low energy consumption.

Cited by 45 publications

References 35 publications

A Microbiological Approach to Alleviate Soil Replant Syndrome in Peaches

A Microbiological Approach to Alleviate Soil Replant Syndrome in Peaches

A review on application of external carbon sources for denitrification for wastewater treatment

Metagenome metabolic analysis revealing the mechanism of simultaneous methanogenesis, aerobic methane oxidation and denitrification (SMAMOD) in a microaerobic up‐flow sludge bed biofilm reactor

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