Host And Environmental Determinants Of Microbial Community Structure In The Marine Phyllosphere
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Host And Environmental Determinants Of Microbial Community Structure In The Marine Phyllosphere

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Details:

  • Journal Title:
    PLoS One
  • Personal Author:
  • NOAA Program & Office:
  • Sea Grant Program:
    FLSGP (Florida Sea Grant)
  • Description:
    Although seagrasses are economically and ecologically critical species, little is known about their blade surface microbial communities and how these communities relate to the plant host. To determine microbial community composition and diversity on seagrass blade surfaces and in the surrounding seawater,16S rRNA gene sequencing (iTag) was used for samples collected at five sites along a gradient of freshwater input in the northern Gulf of Mexico on three separate sampling dates. Additionally, seagrass surveys were performed and environmental parameters were measured to characterize host characteristics and the abiotic conditions at each site. Results showed that Thalassia testudinum (turtle grass) blades hosted unique microbial communities that were distinct in composition and diversity from the water column. Environmental conditions, including water depth, salinity, and temperature, influenced community structure as blade surface microbial communities varied among sites and sampling dates in correlation with changes in environmental parameters. Microbial community composition also correlated with seagrass host characteristics, including growth rates and blade nutrient composition. There is some evidence for a core community for T. testudinum as 21 microorganisms from five phyla (Cyanobacteria, Proteobacteria, Planctomycetes, Chloroflexi, and Bacteroidetes) were present in all blade surface samples. This study provides new insights and understanding of the processes that influence the structure of marine phyllosphere communities, how these microbial communities relate to their host, and their role as a part of the seagrass holobiont, which is an important contribution given the current decline of seagrass coverage worldwide.
  • Keywords:
  • Source:
    PLOS ONE 16(10): e0259357
  • DOI:
  • Sea Grant Document Number:
    FLSGP-R-20-018
  • Document Type:
    Journal Article
  • Place as Subject:
    Mexico, Gulf of
  • Rights Information:
    CC BY
  • Compliance:
    Library
  • Main Document Checksum:
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