Bacterial community structure within an activated sludge reactor added with phenolic compounds

Gómez-Acata, Selene; Esquivel-Rios, Ivonne; Pérez-Sandoval, Mariana Vivian; Navarro‐Noya, Yendi E.; Rojas-Valdez, Aketzally; Thalasso, F.; Luna‐Guido, Marco; Dendooven, Luc

doi:10.1007/s00253-016-8000-z

Cited by 40 publications

(6 citation statements)

References 37 publications

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Section: Resultsmentioning

confidence: 99%

“…In this sense, sequences M3, M22, M23, and M25 were related to an uncultured actinobacterium, an Acidobacteria bacterium, a Salinibacterium xinjiangense, and an Actinobacterium, respectively. These species have been found in bacterial communities of activated sludge reactors fed with phenolic compounds 50 or of wastewater treatment in SBR reactors with low concentrations of 4-CP (1.5 mg L −1 ). 49 According to the above, 2-CP could be consumed by heterotrophic and/or by ammonium-oxidizing species through the AMO participation, since they remained present in most of the operating cycles in both reactors, even with the increase in the concentration of 2-CP.…”

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confidence: 99%

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Population dynamics of nitrifying sludge supplemented with 2‐chlorophenol in SBR reactors

Martínez-Jardines

González-Robles

González‐Márquez

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND The metabolic improvement and reduction of the inhibitory effect of 2‐chlorophenol (2‐CP) on the nitrification process occurring in nitrifying SBR systems can be associated with changes in the microbial community. The physiologic, kinetic, and microbial population behaviors of two nitrifying sludges were evaluated in two parallel sequencing batch reactors (SBR1 and SBR2) amended with 2‐CP. Seven cycles were performed with 20 to 60 mg 2‐CP‐C/L. RESULTS Ammonium‐oxidizing and nitrite‐oxidizing processes were physiologically disturbed in SBR1 and SBR2 due to increased 2‐CP concentrations, attaining ammonium consumption efficiencies (ENH4+‐N) and nitrate yields (YNO3−‐N) as low as 38% and 0.32 mg NO3−‐N/mg NH4+‐N consumed, respectively. Nevertheless, in cycle 7, both sludges recovered their physiological capacities, as ENH4+‐N of 100% and YNO3−‐N > 0.94 mg NO3−‐N/mg NH4+‐N consumed were achieved in both nitrifying processes. Increase in 2‐CP concentration also affected the kinetics of nitrification processes, wherein a higher inhibition on the specific rate of ammonium‐oxidizing process was observed. Despite the increase in 2‐CP concentration, no predominance of species was noted, as the bacterial community evenness index remained above 0.97, whereas the richness index increased along with SBR operation. CONCLUSION The stable, complete, and efficient nitrifying process achieved in both SBRs could be related to the higher bacterial community richness and to the regular maintenance of ammonium and nitrite oxidizing bacteria tolerant to 2‐CP along experimentation. Total 2‐CP consumption might be associated with ammonium‐oxidizing and/or heterotrophic bacteria related to Nitrosospira, Luteimonas, and Cohnella. © 2021 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Population dynamics of nitrifying sludge supplemented with 2‐chlorophenol in SBR reactors

Martínez-Jardines

González-Robles

González‐Márquez

et al. 2021

J of Chemical Tech & Biotech

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“…Again, to our knowledge, no direct links between this bacterial genus and PBDE exposures in wildlife or in experimental studies could be found in the literature. It had been observed that certain Actinobacteria have a strong ability to utilize phenolic compounds in bioreactors and wastewater treatment plants (Gómez-Acata et al, 2016;Baskaran et al, 2017). These phenolic compounds may include products derived from the degradation or enzyme-mediated biotransformation of PBDEs.…”

Section: Correlations Between Contaminants and The Sle Beluga Skin Mi...mentioning

confidence: 99%

Investigating the relationship between the skin microbiome and flame retardant exposure of the endangered St. Lawrence Estuary beluga

Jia

Garlock²,

Allison³

et al. 2022

Front. Environ. Sci.

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The endangered beluga (Delphinapterus leucas) population in the St. Lawrence Estuary (SLE) in eastern Canada, the largest estuary in the world, is declining. Elevated tissue concentrations of a wide range of environmental contaminants, for example, halogenated flame retardants (HFRs) including polybrominated diphenyl ethers (PBDEs), might play a role in the non-recovery of this population. In mammals, HFRs have been reported to impair the metabolic regulation, including amino acid and fatty acid pathways. In the present study, we collected both blubber and skin swab samples from tissue biopsies from 56 adult SLE belugas and analyzed their blubber for the concentrations of a comprehensive suite of PBDEs and other HFRs. Using 16S rRNA marker and shotgun metagenomic approaches using skin swabs, we investigated, for the first time, the SLE beluga skin microbiome and the SLE water microbiome, providing valuable comparative taxonomic and functional microbiome information. We found that belugas have a unique skin microbiome that is distinct from surrounding SLE water, regardless of the beluga sex or location in the SLE. We further characterized the core microbiome of SLE beluga skin and surrounding SLE water, and identified bacterial taxa and gene functional pathways associated with the skin microbiome that correlated with beluga blubber HFR concentrations. Namely, we identified the phylum Nitrospinae and candidate phylum PAUC34f as potential taxa of interest that are associated with blubber HFR concentrations. We hypothesize that the biodegradation of HFRs within the beluga blubber and skin results in an increase in local metabolite concentrations that leads to the proliferation of Nitrospinae and PAUC32f. This work demonstrates the utility of studying the core microbiome of the SLE beluga skin using a swab method that could be adapted to field sampling. Further studies of the temporal effects of contaminant exposure on SLE beluga skin and SLE water microbiomes is warranted for potentially better monitoring and protecting this marine mammal which is at risk.

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“…Phenol can alter the microbial community structure in manmade ecosystems (Gomez-Acata et al 2017;Pereira et al 2014;Poirier et al 2016;Wu et al 2019). But the shift in bacterial community structure in natural ecosystems induced by phenol is still unknown.…”

Section: Effects Of Phenol On Sediment Bacterial Community Structurementioning

confidence: 99%

Shifts in structure and function of bacterial community in river and fish pond sediments after a phenol spill

Chen

Feng

Zheng

et al. 2021

Environ Sci Pollut Res

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Phenol is widely used in industrial processes and has microbial toxicity. However, the effects of a phenol spill on the microbial community are not clear. The present study explored the changes of bacterial communities in river and fish pond sediments after a phenol spill. The bacterial richness and diversity in river sediments were lower on day 30 (36 days after the spill) than on day 0, while they increased in fish pond sediments. The structures and functions of bacterial communities in both river and fish pond sediments were changed, and a more dramatical variation was detected in fish pond sediments. In river sediments, Proteobacteria, Chloroflexi, Acidobacteria, Bacteroidetes, and Nitrospirae were the major bacterial phyla, and Chloroflexi was enriched. In fish pond sediments, genera Brevibacillus dominated bacterial communities initially, and bacterial composition showed a dramatic change on day 30. Most predicted metabolism functions, as well as genetic information processing functions of translation, replication, and repair, were enhanced in both river and fish pond sediments, while they showed an opposite change trend for xenobiotic degradation function. This work could strengthen our understanding of the effects of phenol spills on sediment bacterial communities in both lotic and lentic ecosystems.

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Bacterial community structure within an activated sludge reactor added with phenolic compounds

Cited by 40 publications

References 37 publications

Population dynamics of nitrifying sludge supplemented with 2‐chlorophenol in SBR reactors

Population dynamics of nitrifying sludge supplemented with 2‐chlorophenol in SBR reactors

Investigating the relationship between the skin microbiome and flame retardant exposure of the endangered St. Lawrence Estuary beluga

Shifts in structure and function of bacterial community in river and fish pond sediments after a phenol spill

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