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Microbiome analysis reveals Microcystis blooms endogenously seeded from benthos within wastewater maturation ponds.

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Title: Microbiome analysis reveals Microcystis blooms endogenously seeded from benthos within wastewater maturation ponds.
Authors: Romanis, C. S.1, Timms, V. J.1,2, Nebauer, D. J.1, Crosbie, N. D.3, Neilan, B. A.1,2 Brett.Neilan@Newcastle.edu.au
Source: Applied & Environmental Microbiology. Jan2024, Vol. 90 Issue 1, p1-19. 19p.
Subjects: Microcystis, Sewage lagoons, Sewage disposal plants, Lagoons, Benthos, Ponds, Sewage
Geographic Terms: Australia
Abstract: Toxigenic Microcystis blooms periodically disrupt the stabilization ponds of wastewater treatment plants (WWTPs). Dense proliferations of Microcystis cells within the surface waters (SWs) impede the water treatment process by reducing the treatment efficacy of the latent WWTP microbiome. Further, water quality is reduced when conventional treatment leads to Microcystis cell lysis and the release of intracellular microcystins into the water column. Recurrent seasonal Microcystis blooms cause significant financial burdens for the water industry and predicting their source is vital for bloom management strategies. We investigated the source of recurrent toxigenic Microcystis blooms at Australia's largest lagoon-based municipal WWTP in both sediment core (SC) and SW samples between 2018 and 2020. Bacterial community composition of the SC and SW samples according to 16S rRNA gene amplicon sequencing showed that Microcystis sp. was dominant within SW samples throughout the period and reached peak relative abundances (32%) during the summer. The same Microcystis Amplicon sequence variants were present within the SC and SW samples indicating a potential migratory population that transitions between the sediment water and SWs during bloom formation events. To investigate the potential of the sediment to act as a repository of viable Microcystis cells for recurrent bloom formation, a novel in-vitro bloom model was established featuring sediments and sterilized SW collected from the WWTP. Microcystin-producing Microcystis blooms were established through passive resuspension after 12 weeks of incubation. These results demonstrate the capacity of Microcystis to transition between the sediments and SWs in WWTPs, acting as a perennial inoculum for recurrent blooms. [ABSTRACT FROM AUTHOR]
Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Microbiome analysis reveals Microcystis blooms endogenously seeded from benthos within wastewater maturation ponds.
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  Data: <searchLink fieldCode="AR" term="%22Romanis%2C+C%2E+S%2E%22">Romanis, C. S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Timms%2C+V%2E+J%2E%22">Timms, V. J.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Nebauer%2C+D%2E+J%2E%22">Nebauer, D. J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Crosbie%2C+N%2E+D%2E%22">Crosbie, N. D.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Neilan%2C+B%2E+A%2E%22">Neilan, B. A.</searchLink><relatesTo>1,2</relatesTo><i> Brett.Neilan@Newcastle.edu.au</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+%26+Environmental+Microbiology%22">Applied & Environmental Microbiology</searchLink>. Jan2024, Vol. 90 Issue 1, p1-19. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Microcystis%22">Microcystis</searchLink><br /><searchLink fieldCode="DE" term="%22Sewage+lagoons%22">Sewage lagoons</searchLink><br /><searchLink fieldCode="DE" term="%22Sewage+disposal+plants%22">Sewage disposal plants</searchLink><br /><searchLink fieldCode="DE" term="%22Lagoons%22">Lagoons</searchLink><br /><searchLink fieldCode="DE" term="%22Benthos%22">Benthos</searchLink><br /><searchLink fieldCode="DE" term="%22Ponds%22">Ponds</searchLink><br /><searchLink fieldCode="DE" term="%22Sewage%22">Sewage</searchLink>
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  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22Australia%22">Australia</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Toxigenic Microcystis blooms periodically disrupt the stabilization ponds of wastewater treatment plants (WWTPs). Dense proliferations of Microcystis cells within the surface waters (SWs) impede the water treatment process by reducing the treatment efficacy of the latent WWTP microbiome. Further, water quality is reduced when conventional treatment leads to Microcystis cell lysis and the release of intracellular microcystins into the water column. Recurrent seasonal Microcystis blooms cause significant financial burdens for the water industry and predicting their source is vital for bloom management strategies. We investigated the source of recurrent toxigenic Microcystis blooms at Australia's largest lagoon-based municipal WWTP in both sediment core (SC) and SW samples between 2018 and 2020. Bacterial community composition of the SC and SW samples according to 16S rRNA gene amplicon sequencing showed that Microcystis sp. was dominant within SW samples throughout the period and reached peak relative abundances (32%) during the summer. The same Microcystis Amplicon sequence variants were present within the SC and SW samples indicating a potential migratory population that transitions between the sediment water and SWs during bloom formation events. To investigate the potential of the sediment to act as a repository of viable Microcystis cells for recurrent bloom formation, a novel in-vitro bloom model was established featuring sediments and sterilized SW collected from the WWTP. Microcystin-producing Microcystis blooms were established through passive resuspension after 12 weeks of incubation. These results demonstrate the capacity of Microcystis to transition between the sediments and SWs in WWTPs, acting as a perennial inoculum for recurrent blooms. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied & Environmental Microbiology is the property of American Society for Microbiology and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1128/aem.01585-23
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 19
        StartPage: 1
    Subjects:
      – SubjectFull: Microcystis
        Type: general
      – SubjectFull: Sewage lagoons
        Type: general
      – SubjectFull: Sewage disposal plants
        Type: general
      – SubjectFull: Lagoons
        Type: general
      – SubjectFull: Benthos
        Type: general
      – SubjectFull: Ponds
        Type: general
      – SubjectFull: Sewage
        Type: general
      – SubjectFull: Australia
        Type: general
    Titles:
      – TitleFull: Microbiome analysis reveals Microcystis blooms endogenously seeded from benthos within wastewater maturation ponds.
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            NameFull: Romanis, C. S.
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            NameFull: Timms, V. J.
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            – D: 01
              M: 01
              Text: Jan2024
              Type: published
              Y: 2024
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