气候变化领域集成服务门户(CCPortal): Mass-immigration determines the assembly of activated sludge microbial communities

CCPortal

DOI	10.1073/pnas.2021589118
	Mass-immigration determines the assembly of activated sludge microbial communities
	Dottorini G.; Michaelsen T.Y.; Kucheryavskiy S.; Andersen K.S.; Kristensen J.M.; Peces M.; Wagner D.S.; Nierychlo M.; Nielsen P.H.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:27
英文摘要	The assembly of bacterial communities in wastewater treatment plants (WWTPs) is affected by immigration via wastewater streams, but the impact and extent of bacterial immigrants are still unknown. Here, we quantify the effect of immigration at the species level in 11 Danish full-scale activated sludge (AS) plants. All plants have different source communities but have very similar process design, defining the same overall environmental growth conditions. The AS community composition in each plant was strongly reflected by the corresponding influent wastewater (IWW) microbial composition. Most species in AS across the plants were detected and quantified in the corresponding IWW, allowing us to identify their fate in the AS: growing, disappearing, or surviving. Most of the abundant species in IWW disappeared in AS, so their presence in the AS biomass was only due to continuous mass-immigration. In AS, most of the abundant growing species were present in the IWW at very low abundances. We predicted the AS species abundances from their abundance in IWW by using a partial least square regression model. Some species in AS were predicted by their own abundance in IWW, while others by multiple species abundances. Detailed analyses of functional guilds revealed different prediction patterns for different species. We show, in contrast to the present understanding, that the AS microbial communities were strongly controlled by the IWW source community and could be quantitatively predicted by taking into account immigration. This highlights a need to revise the way we understand, design, and manage the microbial communities in WWTPs. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Activated sludge; Community assembly; Immigration
语种	英语
scopus关键词	activated sludge; article; biomass; human; immigration; least square analysis; microbial community; population abundance; prediction; process design; quantitative analysis; waste water treatment plant; biodiversity; microbiology; microflora; principal component analysis; sewage; species difference; theoretical model; wastewater; Biodiversity; Biomass; Microbiota; Models, Theoretical; Principal Component Analysis; Sewage; Species Specificity; Waste Water
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251140
作者单位	Department of Chemistry and Bioscience, Section of Biotechnology, Center for Microbial Communities, Aalborg University, Aalborg, 9220, Denmark; Department of Chemistry and Bioscience, Section of Chemical Engineering, Aalborg University, Esbjerg, 6700, Denmark
推荐引用方式 GB/T 7714	Dottorini G.,Michaelsen T.Y.,Kucheryavskiy S.,et al. Mass-immigration determines the assembly of activated sludge microbial communities[J],2021,118(27).
APA	Dottorini G..,Michaelsen T.Y..,Kucheryavskiy S..,Andersen K.S..,Kristensen J.M..,...&Nielsen P.H..(2021).Mass-immigration determines the assembly of activated sludge microbial communities.Proceedings of the National Academy of Sciences of the United States of America,118(27).
MLA	Dottorini G.,et al."Mass-immigration determines the assembly of activated sludge microbial communities".Proceedings of the National Academy of Sciences of the United States of America 118.27(2021).