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Microbiota of Attine Ants' Gardens: Visualizing a Microbial Landscape by Scanning Electron Microscopy
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Yard vegetation is associated with gut microbiota composition.

Anirudra Parajuli1, Nan Hui2, Riikka Puhakka1

  • 1Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Lahti, Finland.

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Living environments impact gut microbes. Diverse yard vegetation is linked to beneficial gut bacteria, while built environments correlate with increased Bacteroides, suggesting gardening influences gut health.

Keywords:
Built area coverageElderly gut microbiotaGarden diversityGut microbiotaLiving environment

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Area of Science:

  • Microbiology
  • Human Health
  • Environmental Science

Background:

  • Gut microbiota is crucial for immune system development and function.
  • Gut dysbiosis is linked to immune-mediated diseases and other health disorders.
  • Previous research suggests environmental exposures, like gardening, can modify gut microflora.

Purpose of the Study:

  • To investigate the association between living environment and gut microbiota composition.
  • To explore the impact of urban-rural gradients and yard vegetation on gut bacteria.
  • To identify specific bacterial phylotypes associated with different environmental factors.

Main Methods:

  • Collected stool samples from 48 elderly Finns along an urban-rural gradient.
  • Identified bacterial phylotypes using 16S rRNA Illumina MiSeq sequencing.
  • Analyzed associations between yard vegetation, land cover, and gut microbiota using generalized linear mixed models.

Main Results:

  • Diverse yard vegetation correlated with reduced Clostridium sensu stricto and increased Faecalibacterium and Prevotellaceae.
  • The abundance of Bacteroides showed a strong positive association with the built environment.
  • These associations remained significant even after excluding animal owners.

Conclusions:

  • Diverse vegetation surrounding homes is associated with health-promoting shifts in gut microbiota composition.
  • Environmental factors, specifically garden diversity, can influence gut microbial communities.
  • Manipulating garden diversity, potentially with urban planning, may offer future interventions for maintaining gut homeostasis.