Aerotolerant methanogens use seaweed and seagrass metabolites to drive marine methane emissions
Hall, N.; Wong, W. W.; Lappan, R.; Ricci, F.; Glud, R. N.; Kawaichi, S.; Rotaru, A.-E.; Greening, C.; Cook, P.
Show abstract
Methanogenesis is classically thought to be limited to strictly anoxic environments. While oxygenated oceans are a known methane source, it is argued that methanogenesis is driven by methylphosphonate-degrading bacteria or potentially is associated to zooplankton gut microbiomes rather than by methanogenic archaea. Here we show through in situ monitoring and ex situ manipulations that methane is rapidly produced by archaea in frequently oxygenated sandy sediments. By combining biogeochemical, metagenomic, and culture-based experiments, we show this activity is driven by aerotolerant methylotrophic methanogens (Methanococcoides spp.) broadly distributed in surface layers of sandy sediments, providing evidence of a hidden process contributing to marine methane emissions. Moreover, we show that methane emissions are driven by methylated seaweed and seagrass metabolites, revealing an unexpected feedback loop between eutrophication-driven algal blooms and greenhouse gas emissions.
Matching journals
The top 3 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- The dynamic trophic architecture of open-ocean protist communities revealed through machine- guided metatranscriptomics 95%
- Diatom Modulation of Microbial Consortia Through Use of Two Unique Secondary Metabolites 95%
- Hydrogen stable isotope probing of lipids demonstrates slow rates of microbial growth in soil 94%
Similar papers in this journal
- Atribacteria reproducing over millions of years in the Atlantic abyssal subseafloor 98%
- Uncultivated DPANN archaea are ubiquitous inhabitants of global oxygen deficient zones with diverse metabolic potential 96%
- DNA and RNA-SIP reveal Nitrospira spp. as key drivers of nitrification in groundwater-fed biofilters 96%
Similar papers in this journal
Similar papers in this journal
- Evidence for a growth zone for deep subsurface microbial clades in near-surface anoxic sediments 96%
- Genome-resolved metagenomics and detailed geochemical speciation analyses yield new insights into microbial mercury cycling in geothermal springs 96%
- Methane Cycling Microbes are Important Predictors of Methylmercury Accumulation in Rice Paddies 95%
Similar papers in this journal
- Diversity and function of methyl-coenzyme M reductase-encoding archaea in Yellowstone hot springs revealed by metagenomics and mesocosm experiments 97%
- Meta-omics reveals role of photosynthesis in Microbially Induced Carbonate Precipitation at a CO2-rich Geyser 96%
- Culexarchaeia, a novel archaeal class of anaerobic generalists inhabiting geothermal environments 96%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.