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Substrate type determines metagenomic profiles from diverse chemical habitats.

ABSTRACT: Environmental parameters drive phenotypic and genotypic frequency variations in microbial communities and thus control the extent and structure of microbial diversity. We tested the extent to which microbial community composition changes are controlled by shifting physiochemical properties within a hypersaline lagoon. We sequenced four sediment metagenomes from the Coorong, South Australia from samples which varied in salinity by 99 Practical Salinity Units (PSU), an order of magnitude in ammonia concentration and two orders of magnitude in microbial abundance. Despite the marked divergence in environmental parameters observed between samples, hierarchical clustering of taxonomic and metabolic profiles of these metagenomes showed striking similarity between the samples (>89%). Comparison of these profiles to those derived from a wide variety of publically available datasets demonstrated that the Coorong sediment metagenomes were similar to other sediment, soil, biofilm and microbial mat samples regardless of salinity (>85% similarity). Overall, clustering of solid substrate and water metagenomes into discrete similarity groups based on functional potential indicated that the dichotomy between water and solid matrices is a fundamental determinant of community microbial metabolism that is not masked by salinity, nutrient concentration or microbial abundance.

SUBMITTER: Jeffries TC

PROVIDER: S-EPMC3179486 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature

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Substrate type determines metagenomic profiles from diverse chemical habitats.

Jeffries Thomas C TC Seymour Justin R JR Gilbert Jack A JA Dinsdale Elizabeth A EA Newton Kelly K Leterme Sophie S C SS Roudnew Ben B Smith Renee J RJ Seuront Laurent L Mitchell James G JG

PloS one 20110923 9

Environmental parameters drive phenotypic and genotypic frequency variations in microbial communities and thus control the extent and structure of microbial diversity. We tested the extent to which microbial community composition changes are controlled by shifting physiochemical properties within a hypersaline lagoon. We sequenced four sediment metagenomes from the Coorong, South Australia from samples which varied in salinity by 99 Practical Salinity Units (PSU), an order of magnitude in ammoni ...[more]

PMID: 21966446

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Substrate type determines metagenomic profiles from diverse chemical habitats.

Publications

Substrate type determines metagenomic profiles from diverse chemical habitats.

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