DOI: 10.1016/j.watres.2019.01.003
Scopus记录号: 2-s2.0-85060227172
论文题名: Coupled virus - bacteria interactions and ecosystem function in an engineered microbial system
作者: Brown M.R. ; Baptista J.C. ; Lunn M. ; Swan D.L. ; Smith S.J. ; Davenport R.J. ; Allen B.D. ; Sloan W.T. ; Curtis T.P.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 264
结束页码: 273
语种: 英语
英文关键词: Activated sludge
; Viruses
; Wastewater treatment
Scopus关键词: Activated sludge process
; Ammonia
; Bacteria
; Computer viruses
; Ecosystems
; Effluents
; Wastewater treatment
; Water quality
; Activated sludge
; Activated sludge systems
; Ammoniaoxidising bacteria (AOB)
; Community composition
; Effluent concentrations
; Full scale activated sludges
; Operational parameters
; Wastewater treatment system
; Viruses
; arsenic
; cadmium
; calcium
; magnesium
; nitrate
; nitrite
; potassium
; sodium hydroxide
; sulfate
; abiotic factor
; abundance
; activated sludge
; bacteriophage
; bioreactor
; chemical oxygen demand
; community composition
; community structure
; ecosystem function
; effluent
; interspecific interaction
; microbial ecology
; virus
; wastewater treatment
; Article
; bacterium
; community structure
; controlled study
; ecosystem
; effluent
; liquid
; microbial community
; microbial interaction
; Microthrix
; nitrification
; nonhuman
; priority journal
; Tetrasphaera
; Thiothrix
; virus
; virus concentration
; waste water
; Bacteria (microorganisms)
英文摘要: Viruses are thought to control bacterial abundance, affect community composition and influence ecosystem function in natural environments. Yet their dynamics have seldom been studied in engineered systems, or indeed in any system, for long periods of time. We measured virus abundance in a full-scale activated sludge plant every week for two years. Total bacteria and ammonia oxidising bacteria (AOB) abundances, bacterial community profiles, and a suite of environmental and operational parameters were also monitored. Mixed liquor virus abundance fluctuated over an order of magnitude (3.18 × 108–3.41 × 109 virus's mL−1) and that variation was statistically significantly associated with total bacterial and AOB abundance, community composition, and effluent concentrations of COD and NH4 +- N and thus system function. This suggests viruses play a far more important role in the dynamics of activated sludge systems than previously realised and could be one of the key factors controlling bacterial abundance, community structure and functional stability and may cause reactors to fail. These findings are based on statistical associations, not mechanistic models. Nevertheless, viral associations with abiotic factors, such as pH, make physical sense, giving credence to these findings and highlighting the role that physical factors play in virus ecology. Further work is needed to identify and quantify specific bacteriophage and their hosts to enable us to develop mechanistic models of the ecology of viruses in wastewater treatment systems. However, since we have shown that viruses can be related to effluent quality and virus quantification is simple and cheap, practitioners would probably benefit from quantifying viruses now. © 2019 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122004
Appears in Collections: 气候变化事实与影响
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作者单位: School of Engineering, Newcastle UniversityNE1 7RU, United Kingdom; Department of Statistics, University of OxfordOX1 3TG, United Kingdom; Department of Civil Engineering, University of GlasgowG12 8LT, United Kingdom
Recommended Citation:
Brown M.R.,Baptista J.C.,Lunn M.,et al. Coupled virus - bacteria interactions and ecosystem function in an engineered microbial system[J]. Water Research,2019-01-01