Ammonia-oxidizing archaea involved in nitrogen removal

You, Jing; Das, Atreyee; Dolan, Elizabeth M.; Hu, Zhiqiang

doi:10.1016/j.watres.2009.01.016

Cited by 172 publications

(94 citation statements)

References 73 publications

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“…Copies of bacterial amoA genes were further positively correlated with DON. DON is the precursor of ammonia (mineralization) and thus is essential for the constant replenishment of the ammonia pool as substrate for nitrification, thus indicating that DON is essential for maintaining ammonia oxidizing bacteria metabolism (You et al, 2009;Brierley et al, 2001). Moist soil conditions pronouncing the diffusion of substrates (for example, nitrate and ammonia) to microbes offered obviously a favourable environment for sustaining and increasing the abundance of ammonia oxidizing bacteria, which is in agreement with previously published information Adair and Schwartz, 2008).…”

Section: Discussionmentioning

confidence: 99%

Seasonality and resource availability control bacterial and archaeal communities in soils of a temperate beech forest

et al. 2010

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It was hypothesized that seasonality and resource availability altered through tree girdling were major determinants of the phylogenetic composition of the archaeal and bacterial community in a temperate beech forest soil. During a 2-year field experiment, involving girdling of beech trees to intercept the transfer of easily available carbon (C) from the canopy to roots, members of the dominant phylogenetic microbial phyla residing in top soils under girdled versus untreated control trees were monitored at bimonthly intervals through 16S rRNA gene-based terminal restriction fragment length polymorphism profiling and quantitative PCR analysis. Effects on nitrifying and denitrifying groups were assessed by measuring the abundances of nirS and nosZ genes as well as bacterial and archaeal amoA genes. Seasonal dynamics displayed by key phylogenetic and nitrogen (N) cycling functional groups were found to be tightly coupled with seasonal alterations in labile C and N pools as well as with variation in soil temperature and soil moisture. In particular, archaea and acidobacteria were highly responsive to soil nutritional and soil climatic changes associated with seasonality, indicating their high metabolic versatility and capability to adapt to environmental changes. For these phyla, significant interrelations with soil chemical and microbial process data were found suggesting their potential, but poorly described contribution to nitrification or denitrification in temperate forest soils. In conclusion, our extensive approach allowed us to get novel insights into effects of seasonality and resource availability on the microbial community, in particular on hitherto poorly studied bacterial phyla and functional groups.

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Section: Discussionmentioning

confidence: 99%

Seasonality and resource availability control bacterial and archaeal communities in soils of a temperate beech forest

et al. 2010

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“…In a word, the majority of AOA isolates and enrichment cultures are mesophilic or moderately thermophilic [36]. Previous studies have demonstrated that AOA could thrive in the environments with very low DO level and achieve higher ammonia oxidation rate than AOB [37].…”

Section: Discussionmentioning

confidence: 99%

Enrichment and characteristics of ammonia-oxidizing archaea in wastewater treatment process

Chen

Yue

Jin

et al. 2017

Chemical Engineering Journal

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Abstract: High purity ammonia-oxidizing archaea (AOA) culture containing a single AOA strain was enriched from the filtering materials of biological aerated filter. The concentration of AOA reached 3.27×10 7 copies/mL, while its proportion was 91.40%. The AOA amoA gene sequence belonged to Nitrososphaera cluster. Ammonia concentration significantly influenced the growth of AOA in culture, while total organic carbon (TOC) concentration had no obvious effect. The optimum ammonia concentration, temperature, pH and DO concentration for growth of AOA were 1 mM, 30 ˚C, 7.5 and 2.65 mg/L, respectively. Under the optimum growth conditions, the AOA abundance and ammonia oxidation rate were 3.53×10 7 copies/mL and 2.54×10 -10 mg/(copies·d).

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“…The archaeal membrane lipids (isoprenoid glycerol dialkyl glycerol tetraethers) have been suggested as a bioindicator for investigating the ecophysiology of AOA in wastewater treatment bioreactors. These lipids have been observed to correlate with archaeal amoA gene copies (You et al 2009). Recently, AOA that were deficient in both carbon fixation and NH 3 oxidation abilities despite possessing amoA gene were reported (Mussmann et al 2011;Stahl and de la Torre 2012).…”

Section: Ammonia-oxidizing Archaea (Aoa): the New Player In Mbr Nitrimentioning

confidence: 98%

“…Among the different AOA, Candidatus Nitrosopumilus maritimus was the first member of the group to be isolated (Stahl and de la Torre 2012). This species is reported to have the same growth and cell production rates as those of AOB and is capable of using ammonia as the sole energy source for growth (You et al 2009). AOA can tolerate environment with oxygen concentration over the range of \3.1 lM-0.2 mM; however, the environment with low oxygen may select them in contrast to AOB (Limpiyakorn et al 2011).…”

Section: Ammonia-oxidizing Archaea (Aoa): the New Player In Mbr Nitrimentioning

confidence: 99%

Ecophysiology of nitrifying communities in membrane bioreactors

Awolusi

Kumari

Bux

2014

Int. J. Environ. Sci. Technol.

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Membrane bioreactors (MBRs) are rapidly becoming the technology of choice over conventional activated sludge treatment systems due to their smaller footprint, reduced sludge production, rapid start-up of biological processes, complete removal of suspended solids and better effluent quality. The retention of sufficient amount of slow-growing nitrifiers makes it feasible for the MBRs to achieve strong tolerance against the shock loads with stable and highly efficient nitrogen removal. Various studies have focused on the ecophysiology of nitrifiers in MBRs as well as their distinctive operational parameters as well as their impact on the selection and activity of nitrifying community. Several techniques have been employed over the years to understand the nitrifying community and their interaction within the MBR system, which led to its modification from the initial design. This review focuses on the identification of optimal operational and environmental conditions for efficient nitrification in MBRs. The advantages and limitations of different techniques employed for investigating the nitrifying communities in MBRs are also emphasized.

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Ammonia-oxidizing archaea involved in nitrogen removal

Cited by 172 publications

References 73 publications

Seasonality and resource availability control bacterial and archaeal communities in soils of a temperate beech forest

Seasonality and resource availability control bacterial and archaeal communities in soils of a temperate beech forest

Enrichment and characteristics of ammonia-oxidizing archaea in wastewater treatment process

Ecophysiology of nitrifying communities in membrane bioreactors

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