Diversity and dynamics of Archaea in an activated sludge wastewater treatment plant

Fredriksson, Nils Johan; Hermansson, Malte; Wilén, Britt‐Marie

doi:10.1186/1471-2180-12-140

Cited by 39 publications

(23 citation statements)

References 62 publications

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“…A better understanding of the complex microbial ecology in activated sludge could provide valuable information for the improvement of wastewater treatment efficiency. To date, bacterial and archaeal communities from activated sludge WWTPs have been widely examined (Fredriksson et al 2012, Hashimoto et al 2014); however, fungal community structure and functions have still not been well-studied (Niazi et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

Niu

Xu³

et al. 2016

Environ Sci Pollut Res

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Fungi are important contributors to the various functions of activated sludge wastewater treatment plants (WWTPs); however, the diversity and geographic characteristics of fungal populations have remained vastly unexplored. Here, quantitative polymerase chain reaction and 454 pyrosequencing were combined to investigate the abundance and diversity of the activated sludge fungal communities from 18 full-scale municipal WWTPs in China. Phylogenetic taxonomy revealed that the members of the fungal communities were assigned to 7 phyla and 195 genera. Ascomycota and Basidiomycota were the most abundant phyla, dominated by Pluteus, Wickerhamiella, and Penicillium. Twenty-three fungal genera, accounting for 50.1 % of the total reads, were shared by 18 WWTPs and constituted a core fungal community. The fungal communities presented similar community diversity but different community structures across the WWTPs. Significant distance decay relationships were observed for the dissimilarity in fungal community structure and altitudinal distance between WWTPs. Additionally, the community evenness increased from 0.25 to 0.7 as the altitude increased. Dissolved oxygen and the C/N ratio were determined to be the most dominant contributors to the variation in fungal community structure via redundancy analysis. The observed data demonstrated the diverse occurrence of fungal species and gave a marked view of fungal community characteristics based on the previously unexplored fungal communities in activated sludge WWTPs.

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Section: Introductionmentioning

confidence: 99%

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

Niu

Xu³

et al. 2016

Environ Sci Pollut Res

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“…However, a great majority cannot be obtained by conventional techniques (Wagner et al, 1993) and, consequently, current molecular techniques such as sequence analysis of 16S rRNA gene clone libraries (Snaidr et al, 1997), fingerprinting methods such as denaturing gradient gel electrophoresis (DGGE; Boon et al, 2002), thermal gradient gel electrophoresis (TGGE; Eichner et al, 1999) and terminal restriction fragment length polymorphism (Saikaly et al, 2005) along with fluorescence in situ hybridization (FISH) have been employed in wastewater microbiology to analyse and compare the microbial structure of activated sludge. Recently, PCR-based 454 pyrosequencing has been applied to investigate the microbial populations of activated sludge in different WWTPs as well as in full-scale bioreactors (Sanapareddy et al, 2009;Kwon et al, 2010;Kim et al, 2011;Ye et al, 2011;Zhang et al, 2011a;b), greatly expanding our knowledge on activated sludge biodiversity.…”

Section: Introductionmentioning

confidence: 99%

- Bacterial Communities in Different Sections of a Municipal Wastewater Treatment Plant Revealed by 16S rDNA 454 Pyrosequencing

Sánchez¹

2016

Bioremediation of Wastewater

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SummaryThe bacterial community composition of activated sludge from a wastewater treatment plant (Almería, Spain) with the particularity of using seawater was investigated by applying 454-pyrosequencing. The results showed that Deinococcus-Thermus, Proteobacteria, Chloroflexi and Bacteroidetes were the most abundant retrieved sequences, while other groups, such as Actinobacteria, Chlorobi, Deferribacteres, Firmicutes, Planctomycetes, Spirochaetes and Verrumicrobia were reported at lower proportions. Rarefaction analysis showed that very likely the diversity is higher than what could be described despite most of the unknown microorganisms probably correspond to rare diversity. Furthermore, the majority of taxa could not be classified at the genus level and likely represent novel members of these groups. Additionally, the nitrifiers in the sludge were characterized by pyrosequencing the amoA gene. In contrast, the nitrifying bacterial community, dominated by the genera Nitrosomonas, showed a low diversity and rarefaction curves exhibited saturation. These results suggest that only a few populations of low abundant but specialized bacteria are responsible for removal of ammonia in these saline wastewater systems.

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“…Despite these reports, there is still very little data on the association of archaea with biofilm formation on MBR membranes and their impact on MBR performance (Calderón et al, 2013). Since some archaeal groups, such as methanogenic archaea and ammonia oxidizing archaea, are very important in nitrogen and carbon removal processes and prevailing in wastewater treatment activated sludge (Fredriksson et al, 2012;Tabatabaei et al, 2010), it is necessary to study the community diversity of archaeal biofilm on membranes in order to control the biofouling phenomenon in MBR systems.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the archaeal community fouling a membrane bioreactor

Luo

Zhang

Tan

et al. 2015

Journal of Environmental Sciences

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Biofilm formation, one of the primary causes of biofouling, results in reduced membrane flux or increased transmembrane pressure and thus represents a major impediment to the wider implementation of membrane bioreactor (MBR) technologies for water purification. Most studies have focused on the role of bacteria in membrane fouling as they are the most dominant and best studied organisms present in the MBR. In contrast, there is limited information on the role of the archaeal community in biofilm formation in MBRs. This study investigated the composition of the archaeal community during the process of biofouling in an MBR. The archaeal community was observed to have lower richness and diversity in the biofilm than the sludge during the establishment of biofilms at low transmembrane pressure (TMP). Clustering of the communities based on the Bray-Curtis similarity matrix indicated that a subset of the sludge archaeal community formed the initial biofilms. The archaeal community in the biofilm was mainly composed of Thermoprotei, Thermoplasmata, Thermococci, Methanopyri, Methanomicrobia and Halobacteria. Among them, the Thermoprotei and Thermoplasmata were present at higher relative proportions in the biofilms than they were in the sludge. Additionally, the Thermoprotei, Thermoplasmata and Thermococci were the dominant organisms detected in the initial biofilms at low TMP, while as the TMP increased, the Methanopyri, Methanomicrobia, Aciduliprofundum and Halobacteria were present at higher abundances in the biofilms at high TMP.

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Diversity and dynamics of Archaea in an activated sludge wastewater treatment plant

Cited by 39 publications

References 62 publications

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

- Bacterial Communities in Different Sections of a Municipal Wastewater Treatment Plant Revealed by 16S rDNA 454 Pyrosequencing

Characterization of the archaeal community fouling a membrane bioreactor

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