Prokaryotic community interchange between distinct microhabitats causes community pressure on anammox biofilm development

Cai, Weiwei; Cai, Linna; Zhao, Jing; Yao, Hong

doi:10.1016/j.watres.2023.119726

Cited by 22 publications

(6 citation statements)

References 47 publications

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“…The results indicated that the phyla Proteobacteria and Chlorof lexi were more abundant in the Q-AnMBR (42.3 and 9.5%, compared to the C-AnMBR (14.0 and 0.8%, respectively) (Figure 5a), while the phyla Euryarchaeota and Bacteroidota were less prevalent in Q-AnMBR (18.4 and 3.8%, respectively) relative to C-AnMBR (50.9 and 11.3%, respectively). 38 Addition of QQ beads greatly changed the community structure.…”

Section: Qq Impacts On Epsmentioning

confidence: 99%

Biofouling Control by Facultative Quorum Quenching Bacteria in Anaerobic Membrane Bioreactors for High-Strength Wastewater Treatment

An,

Fan,

Wang

et al. 2023

ACS EST Eng.

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Quorum quenching (QQ) by bacterial strains has been demonstrated to be a cost-efficient approach for biofouling control in an anaerobic membrane bioreactor (AnMBR). In this study, a facultative anaerobic QQ consortium was screened and encapsulated in beads (QQ beads) to mitigate biofouling in AnMBR for high-strength wastewater treatment. The operation time of membrane fouling in QQ-AnMBR was 3.5 times longer than that of control-AnMBR. The biofouling mitigation was attributed to the QQ effect on the reduction of quorum sensing signals and extracellular polymeric substances (EPS) in the cake layer. However, the retarded membrane biofouling and lower EPS in the QQ-AnMBR led to a higher level of irreversible membrane resistance. The addition of QQ beads enriched the genus Thauera and Methanothrix, while reduced the abundance of Methanosarcina. Moreover, the relative abundance of QQ-related genes in the cake layer increased from 0.014% in the Control-AnMBR to 0.022% in the QQ-AnMBR. These findings indicate significant promise for the facultative anaerobic QQ strains in implementing a biofouling strategy in AnMBR for high-strength wastewater treatment.

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Section: Qq Impacts On Epsmentioning

confidence: 99%

Biofouling Control by Facultative Quorum Quenching Bacteria in Anaerobic Membrane Bioreactors for High-Strength Wastewater Treatment

An,

Fan,

Wang

et al. 2023

ACS EST Eng.

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“…17−19 SourceTracker, applying a Bayesian framework to estimate the proportion of each source contributing to a given sink, permits a traceable assessment of the origin of regrowth bacteria in reclaimed water. 20,21 The above technologies may contribute to quantitatively assessing the impact of storage conditions on opportunistic pathogens and bacterial communities and provide feasible guidance for enhancing the storage conditions of reclaimed water.…”

Section: Introductionmentioning

confidence: 99%

Reconsidering the Rationality of Ultrafiltration as the Ultimate Safeguard for Reclaimed Water Biosafety: Unexpected Risks Arise under Different Storage Conditions

Cui,

Ding,

et al. 2024

ACS EST Water

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Ultrafiltration, an advanced process for producing biologically safe reclaimed water, has confronted challenges from bacterial regrowth. We conducted a comprehensive investigation into the biosafety risks of ultrafiltration-treated reclaimed water under five distinct storage conditions, considering temperature variations, airborne bacterial invasion, and light. Although ultrafiltration removed over 97% of the bacterial load, bacterial regrowth occurred during storage. Elevated temperatures resulted in the highest heterotrophic plate count (HPC), while lower temperatures favored increased total cell count (TCC). Notably, lower temperatures facilitated a surge in the number of potential pathogenic bacteria. Light exposure also elevated the potential pathogenic bacteria. Surprisingly, high temperatures posed minimal biosafety risk. While airborne bacterial invasion insignificantly affected potential pathogenic bacterial count, it constituted 67 ± 4% of total regrowth bacteria, with membrane breakthrough bacteria comprising the remaining 33 ± 4%, as revealed by SourceTracker. The impact of storage conditions on the bacterial community structure varied, with temperature exerting the most significant effect. Correlation analysis affirmed the potential of UV254 and total fluorescence intensity as alternative indicators for HPC, and polysaccharide content emerged as a suitable substitute indicator for potential pathogenic bacterial count. Future endeavors should prioritize the development of integrated ultrafiltration processes designed to inhibit pathogen regrowth in reclaimed water treatment.

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“…Network analysis can also identify species and substrates that are closely connected to other community members, so‐called “core” species (Shi et al, 2016; Toju et al, 2018; Wang et al, 2021). Shifts in core species will change the topological structure of networks and ultimately microbial metabolism (Cai et al, 2023; Xiao et al, 2023; Yuan et al, 2021). However, whether changes in microbial community impact network stability and carbon utilization across large‐scale temperature gradients remain an open question.…”

Section: Introductionmentioning

confidence: 99%

Temperature‐mediated microbial carbon utilization in China's lakes

Guo

et al. 2023

Global Change Biology

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Microbes play an important role in aquatic carbon cycling but we have a limited understanding of their functional responses to changes in temperature across large geographic areas. Here, we explored how microbial communities utilized different carbon substrates and the underlying ecological mechanisms along a space-for-time substitution temperature gradient of future climate change. The gradient included 47 lakes from five major lake regions in China spanning a difference of nearly 15°C in mean annual temperatures (MAT). Our results indicated that lakes from warmer regions generally had lower values of variables related to carbon concentrations and greater carbon utilization than those from colder regions. The greater utilization of carbon substrates under higher temperatures could be attributed to changes in bacterial community composition, with a greater abundance of Cyanobacteria and Actinobacteriota and less Proteobacteria in warmer lake regions. We also found that the core species in microbial networks changed with increasing temperature, from Hydrogenophaga and Rhodobacteraceae, which inhibited the utilization of amino acids and carbohydrates, to the CL500-29-marine-group, which promoted the utilization of all almost carbon substrates. Overall, our findings suggest that temperature can mediate aquatic carbon utilization by changing the interactions between bacteria and individual carbon substrates, and the discovery of core species that affect carbon utilization provides insight into potential carbon sequestration within inland water bodies under future climate warming.

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Prokaryotic community interchange between distinct microhabitats causes community pressure on anammox biofilm development

Cited by 22 publications

References 47 publications

Biofouling Control by Facultative Quorum Quenching Bacteria in Anaerobic Membrane Bioreactors for High-Strength Wastewater Treatment

Biofouling Control by Facultative Quorum Quenching Bacteria in Anaerobic Membrane Bioreactors for High-Strength Wastewater Treatment

Reconsidering the Rationality of Ultrafiltration as the Ultimate Safeguard for Reclaimed Water Biosafety: Unexpected Risks Arise under Different Storage Conditions

Temperature‐mediated microbial carbon utilization in China's lakes

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