Evidence map›Paper›PMID 23001649›Full record

ArticleApplied and environmental microbiology2012

Choline and N,N-dimethylethanolamine as direct substrates for methanogens.

Andrew J Watkins, Erwan G Roussel, Gordon Webster, R John Parkes, Henrik Sass

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.0field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Methyl-Based Methanogenesis: an Ecological and Genomic Review.Microbiology and molecular biology reviews : MMBR · 2023
    Review
  5. Article
  6. Diverse methylotrophic methanogenic archaea cause high methane emissions from seagrass meadows.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  7. Article
  8. Article
  9. Several ways one goal-methanogenesis from unconventional substrates.Applied microbiology and biotechnology · 2020
    Review
  10. Genome Sequences of Two Choline-Utilizing Methanogenic Archaea,Microbiology resource announcements · 2019
    Article
  11. Article
  12. Article
  13. Article
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  15. Article
  16. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Andrew J WatkinsSchool of Earth and Ocean Sciences, Cardiff University, Cardiff, United Kingdom.
Erwan G Roussel
Gordon Webster
R John Parkes
Henrik Sass
Cardiff University · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Choline (N,N,N-trimethylethanolamine), which is widely distributed in membrane lipids and is a component of sediment biota, has been shown to be utilized anaerobically by mixed prokaryote cultures to produce methane but not by pure cultures of methanogens. Here, we show that five recently isolated Methanococcoides strains from a range of sediments (Aarhus Bay, Denmark; Severn Estuary mudflats at Portishead, United Kingdom; Darwin Mud Volcano, Gulf of Cadiz; Napoli mud volcano, eastern Mediterranean) can directly utilize choline for methanogenesis producing ethanolamine, which is not further metabolized. Di- and monomethylethanolamine are metabolic intermediates that temporarily accumulate. Consistent with this, dimethylethanolamine was shown to be another new growth substrate, but monomethylethanolamine was not. The specific methanogen inhibitor 2-bromoethanesulfonate (BES) inhibited methane production from choline. When choline and trimethylamine are provided together, diauxic growth occurs, with trimethylamine being utilized first, and then after a lag (∼7 days) choline is metabolized. Three type strains of Methanococcoides (M. methylutens, M. burtonii, and M. alaskense), in contrast, did not utilize choline. However, two of them (M. methylutens and M. burtonii) did metabolize dimethylethanolamine. These results extend the known substrates that can be directly utilized by some methanogens, giving them the advantage that they would not be reliant on bacterial syntrophs for their substrate supply.

Indexed as

Environmental MicrobiologyCholineDeanolDNA, ArchaealDNA, RibosomalEthanolamineMethaneMethanosarcinaceaeMolecular Sequence DataRNA, Ribosomal, 16SSequence Analysis, DNACholineDeanolDNA, ArchaealDNA, RibosomalEthanolamineMethaneRNA, Ribosomal, 16S

Identifiers

PMID23001649
PMCPMC3497383
OpenAlexW2101494184

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.