DOI: 10.1016/j.watres.2017.12.033
Scopus记录号: 2-s2.0-85039722354
论文题名: Insights into Feast-Famine polyhydroxyalkanoate (PHA)-producer selection: Microbial community succession, relationships with system function and underlying driving forces
作者: Huang L. ; Chen Z. ; Wen Q. ; Zhao L. ; Lee D.-J. ; Yang L. ; Wang Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131 起始页码: 167
结束页码: 176
语种: 英语
英文关键词: Driving force
; Feast-Famine (FF)
; Microbial community succession
; Mixed culture (MC)
; Polyhydroxyalkanoate (PHA)
; Turnover
Scopus关键词: Food supply
; Physiology
; Driving forces
; Feast famines
; Microbial communities
; Mixed cultures
; Polyhydroxyalkanoates
; Turnover
; Microorganisms
; polyhydroxyalkanoic acid
; acclimation
; bacterium
; ecophysiology
; enrichment
; ester
; famine
; maturation
; microbial community
; microbial ecology
; polymer
; turnover
; acclimatization
; Article
; gene function
; microbial community
; nonhuman
; ordination analysis
; Paracoccus
; priority journal
; synthesis
; Thauera
; waste water treatment plant
; Bacteria (microorganisms)
; Paracoccus (bacterium)
; Thauera
英文摘要: The Feast-Famine (FF) process has been frequently used to select polyhydroxyalkanoate (PHA)-accumulating mixed cultures (MCs), but there has been little insight into the ecophysiology of the microbial community during the selection process. In three FF systems with well-defined conditions, synchronized variations in higher-order properties of MCs and complicate microbial community succession mainly including enrichment and elimination of non-top competitors and unexpected turnover of top competitors, were observed. Quantification of PHA-accumulating function genes (phaC) revealed that the top competitors maintained the PHA synthesis by playing consecutive roles when the highly dynamic turnover occurred. Due to its specific physiological characteristics during the PHA-accumulating process, Thauera strain OTU 7 was found to be responsible for the fluctuating SVI, which threatened the robustness of the FF system. This trait was also responsible for its later competitive exclusion by the other PHA-producer, Paracoccus strain OTU 1. Deterministic processes dominated the entire FF system, resulting in the inevitable microbial community succession in the acclimation phase and maintenance of the stable PHA-accumulating function in the maturation phase. However, neutral processes, likely caused by predation from bacterial phages, also occurred, which led to the unpredictable temporal dynamics of the top competitors. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112998
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan; Department of Chemical Engineering, National Taiwan University, Taipei, 106, Taiwan
Recommended Citation:
Huang L.,Chen Z.,Wen Q.,et al. Insights into Feast-Famine polyhydroxyalkanoate (PHA)-producer selection: Microbial community succession, relationships with system function and underlying driving forces[J]. Water Research,2018-01-01,131