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Estuarine microbial diversity and nitrogen cycling increase along sand–mud gradients independent of salinity and distance.

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Název: Estuarine microbial diversity and nitrogen cycling increase along sand–mud gradients independent of salinity and distance.
Autoři: Boey, Jian Sheng, Mortimer, Redmond, Couturier, Agathe, Worrallo, Katie, Handley, Kim M.
Zdroj: Environmental Microbiology; Jan2022, Vol. 24 Issue 1, p50-65, 16p
Témata: MICROBIAL diversity, TIDAL flats, SALINITY, MICROBIAL communities, MUD, ELECTRODIALYSIS, NITROGEN cycle, COMMUNITIES
Abstrakt: Summary: Estuaries are depositional environments prone to terrigenous mud sedimentation. While macrofaunal diversity and nitrogen retention are greatly affected by changes in sedimentary mud content, its impact on prokaryotic diversity and nitrogen cycling activity remains understudied. We characterized the composition of estuarine tidal flat prokaryotic communities spanning a habitat range from sandy to muddy sediments, while controlling for salinity and distance. We also determined the diversity, abundance and expression of ammonia oxidizers and N2O‐reducers within these communities by amoA and clade I nosZ gene and transcript analysis. Results show that prokaryotic communities and nitrogen cycling fractions were sensitive to changes in sedimentary mud content, and that changes in the overall community were driven by a small number of phyla. Significant changes occurred in prokaryotic communities and N2O‐reducing fractions with only a 3% increase in mud, while thresholds for ammonia oxidizers were less distinct, suggesting other factors are also important for structuring these guilds. Expression of nitrogen cycling genes was substantially higher in muddier sediments, and results indicate that the potential for coupled nitrification–denitrification became increasingly prevalent as mud content increased. Altogether, results demonstrate that mud content is a strong environmental driver of diversity and N‐cycling dynamics in estuarine microbial communities. [ABSTRACT FROM AUTHOR]
Copyright of Environmental Microbiology is the property of Wiley-Blackwell 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.)
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Estuarine microbial diversity and nitrogen cycling increase along sand–mud gradients independent of salinity and distance.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Boey%2C+Jian+Sheng%22">Boey, Jian Sheng</searchLink><br /><searchLink fieldCode="AR" term="%22Mortimer%2C+Redmond%22">Mortimer, Redmond</searchLink><br /><searchLink fieldCode="AR" term="%22Couturier%2C+Agathe%22">Couturier, Agathe</searchLink><br /><searchLink fieldCode="AR" term="%22Worrallo%2C+Katie%22">Worrallo, Katie</searchLink><br /><searchLink fieldCode="AR" term="%22Handley%2C+Kim+M%2E%22">Handley, Kim M.</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: Environmental Microbiology; Jan2022, Vol. 24 Issue 1, p50-65, 16p
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22MICROBIAL+diversity%22">MICROBIAL diversity</searchLink><br /><searchLink fieldCode="DE" term="%22TIDAL+flats%22">TIDAL flats</searchLink><br /><searchLink fieldCode="DE" term="%22SALINITY%22">SALINITY</searchLink><br /><searchLink fieldCode="DE" term="%22MICROBIAL+communities%22">MICROBIAL communities</searchLink><br /><searchLink fieldCode="DE" term="%22MUD%22">MUD</searchLink><br /><searchLink fieldCode="DE" term="%22ELECTRODIALYSIS%22">ELECTRODIALYSIS</searchLink><br /><searchLink fieldCode="DE" term="%22NITROGEN+cycle%22">NITROGEN cycle</searchLink><br /><searchLink fieldCode="DE" term="%22COMMUNITIES%22">COMMUNITIES</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Summary: Estuaries are depositional environments prone to terrigenous mud sedimentation. While macrofaunal diversity and nitrogen retention are greatly affected by changes in sedimentary mud content, its impact on prokaryotic diversity and nitrogen cycling activity remains understudied. We characterized the composition of estuarine tidal flat prokaryotic communities spanning a habitat range from sandy to muddy sediments, while controlling for salinity and distance. We also determined the diversity, abundance and expression of ammonia oxidizers and N2O‐reducers within these communities by amoA and clade I nosZ gene and transcript analysis. Results show that prokaryotic communities and nitrogen cycling fractions were sensitive to changes in sedimentary mud content, and that changes in the overall community were driven by a small number of phyla. Significant changes occurred in prokaryotic communities and N2O‐reducing fractions with only a 3% increase in mud, while thresholds for ammonia oxidizers were less distinct, suggesting other factors are also important for structuring these guilds. Expression of nitrogen cycling genes was substantially higher in muddier sediments, and results indicate that the potential for coupled nitrification–denitrification became increasingly prevalent as mud content increased. Altogether, results demonstrate that mud content is a strong environmental driver of diversity and N‐cycling dynamics in estuarine microbial communities. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Environmental Microbiology is the property of Wiley-Blackwell 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: 10.1111/1462-2920.15550
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 50
    Subjects:
      – SubjectFull: MICROBIAL diversity
        Type: general
      – SubjectFull: TIDAL flats
        Type: general
      – SubjectFull: SALINITY
        Type: general
      – SubjectFull: MICROBIAL communities
        Type: general
      – SubjectFull: MUD
        Type: general
      – SubjectFull: ELECTRODIALYSIS
        Type: general
      – SubjectFull: NITROGEN cycle
        Type: general
      – SubjectFull: COMMUNITIES
        Type: general
    Titles:
      – TitleFull: Estuarine microbial diversity and nitrogen cycling increase along sand–mud gradients independent of salinity and distance.
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            NameFull: Boey, Jian Sheng
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            NameFull: Mortimer, Redmond
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            NameFull: Worrallo, Katie
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            – D: 01
              M: 01
              Text: Jan2022
              Type: published
              Y: 2022
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            – TitleFull: Environmental Microbiology
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