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Asgard archaea modulate potential methanogenesis substrates in wetland soil

Journal Article · · Nature Communications
 [1];  [2];  [3];  [4];  [5];  [5];  [6];  [7];  [5];  [8];  [5];  [3];  [9]
  1. University of California, Berkeley, CA (United States); OSTI
  2. University of Texas, Port Aransas, TX (United States)
  3. University of Texas, Port Aransas, TX (United States); University of Texas, Austin, TX (United States)
  4. University of California, Berkeley, CA (United States); ETH Zürich (Switzerland)
  5. University of California, Berkeley, CA (United States)
  6. Cultivarium, Watertown, MA (United States); University of California, Berkeley, CA (United States)
  7. Oxford Nanopore Technologies Inc, New York, NY (United States)
  8. Monash University, Clayton, VIC (Australia)
  9. University of California, Berkeley, CA (United States); Monash University, Clayton, VIC (Australia)
The roles of Asgard archaea in eukaryogenesis and marine biogeochemical cycles are well studied, yet their contributions in soil ecosystems remain unknown. Of particular interest are Asgard archaeal contributions to methane cycling in wetland soils. To investigate this, we reconstructed two complete genomes for soil-associated Atabeyarchaeia, a new Asgard lineage, and a complete genome of Freyarchaeia, and predicted their metabolism in situ. Metatranscriptomics reveals expression of genes for [NiFe]-hydrogenases, pyruvate oxidation and carbon fixation via the Wood-Ljungdahl pathway. Also expressed are genes encoding enzymes for amino acid metabolism, anaerobic aldehyde oxidation, hydrogen peroxide detoxification and carbohydrate breakdown to acetate and formate. Overall, soil-associated Asgard archaea are predicted to include non-methanogenic acetogens, highlighting their potential role in carbon cycling in terrestrial environments.
Research Organization:
University of California, Oakland, CA (United States)
Sponsoring Organization:
Bill & Melinda Gates Foundation; Simons Foundation; USDOE Office of Science (SC)
Grant/Contract Number:
SC0016240
OSTI ID:
2472052
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 15; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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