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Title: Beyond the tip of the iceberg; a new view of the diversity of sulfite- and sulfate-reducing microorganisms

Journal Article · · The ISME Journal
 [1];  [2];  [3]; ORCiD logo [4];  [5]; ORCiD logo [1]
  1. Newcastle Univ., Newcastle Upon Tyne (United Kingdom); Shell International Exploration and Production Inc., Houston, TX (United States)
  2. INRA, Montferrier-sur-Lez (France)
  3. Shell International Exploration and Production Inc., Houston, TX (United States); USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
  4. Heriot Watt Univ., Edinburgh (United Kingdom)
  5. Newcastle Univ., Newcastle Upon Tyne (United Kingdom)

Sulfite-reducing and sulfate-reducing microorganisms (SRM) play important roles in anoxic environments, linking the sulfur and carbon cycles. With climate warming, the distribution of anoxic habitats conductive to dissimilatory SRM is expanding. Consequently, we hypothesize that novel SRM are likely to emerge from the rare biosphere triggered by environmental changes. Using the dsrB gene as a molecular marker of sulfite-reducers and sulfate-reducers, we analyzed the diversity, community composition, and abundance of SRM in 200 samples representing 14 different ecosystems, including marine and freshwater environments, oil reservoirs, and engineered infrastructure. Up to 167,397 species-level OTUs affiliated with 47 different families were identified. Up to 96% of these can be considered as “rare biosphere SRM”. One third of the dsrB genes identified belonged to uncharacterized lineages. The dsrB sequences exhibited a strong pattern of selection in different ecosystems. These results expand our knowledge of the biodiversity and distribution of SRM, with implications for carbon and sulfur cycling in anoxic ecosystems.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1543738
Journal Information:
The ISME Journal, Vol. 12, Issue 8; ISSN 1751-7362
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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Cited By (6)

Environmental filtering determines family-level structure of sulfate-reducing microbial communities in subsurface marine sediments journal March 2019
Hydrogen sulfide signaling in mitochondria and disease journal December 2019
Draft Genome Sequence of Desulfofundulus thermobenzoicus subsp. thermosyntrophicus DSM 14055, a Moderately Thermophilic Sulfate Reducer journal January 2020
The Active Sulfate-Reducing Microbial Community in Littoral Sediment of Oligotrophic Lake Constance journal February 2019
Shotgun Metagenomics Reveals the Benthic Microbial Community Response to Plastic and Bioplastic in a Coastal Marine Environment journal June 2019
A Bioinformatics Guide to Plant Microbiome Analysis journal October 2019