ArticleFrontiers in microbiology2016
Expanding the Diet for DIET: Electron Donors Supporting Direct Interspecies Electron Transfer (DIET) in Defined Co-Cultures.
Article in Frontiers in microbiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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Who cites it
25 citing papers in PubMed, 105 citations in OpenAlex.
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- Emerging Strategies for Enhancing Propionate Conversion in Anaerobic Digestion: A Review.Molecules (Basel, Switzerland) · 2023Review
- A Biochemical Deconstruction-Based Strategy to Assist the Characterization of Bacterial Electric Conductive Filaments.International journal of molecular sciences · 2023Article
- Extracellular electron uptake from a cathode by the lactic acid bacteriumFrontiers in microbiology · 2023Article
- Different outer membranemLife · 2022Article
- The Role of Exopolysaccharides in Direct Interspecies Electron Transfer.Frontiers in microbiology · 2022Article
- Disentangling the syntrophic electron transfer mechanisms of Candidatus geobacter eutrophica through electrochemical stimulation and machine learning.Scientific reports · 2021Article
- Sparking Anaerobic Digestion: Promoting Direct Interspecies Electron Transfer to Enhance Methane Production.iScience · 2020Review
- Syntrophus conductive pili demonstrate that common hydrogen-donating syntrophs can have a direct electron transfer option.The ISME journal · 2020Article
- New Frontiers of Anaerobic Hydrocarbon Biodegradation in the Multi-Omics Era.Frontiers in microbiology · 2020Review
- COThe ISME journal · 2019Article
- Conductive Iron Oxides Promote Methanogenic Acetate Degradation by Microbial Communities in a High-Temperature Petroleum Reservoir.Microbes and environments · 2019Article
- The Hydrogen Economy of Methanosarcina barkeri: Life in the Fast Lane.Journal of bacteriology · 2018Article
- Syntrophic growth with direct interspecies electron transfer between pili-free Geobacter species.The ISME journal · 2018Article
- Differentiated stimulating effects of activated carbon on methanogenic degradation of acetate, propionate and butyrate.Waste management (New York, N.Y.) · 2018Article
- Article
- Necessity of electrically conductive pili for methanogenesis with magnetite stimulation.PeerJ · 2018Article
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Direct interspecies electron transfer (DIET) has been recognized as an alternative to interspecies H2 transfer as a mechanism for syntrophic growth, but previous studies on DIET with defined co-cultures have only documented DIET with ethanol as the electron donor in the absence of conductive materials. Co-cultures of Geobacter metallireducens and Geobacter sulfurreducens metabolized propanol, butanol, propionate, and butyrate with the reduction of fumarate to succinate. G. metallireducens utilized each of these substrates whereas only electrons available from DIET supported G. sulfurreducens respiration. A co-culture of G. metallireducens and a strain of G. sulfurreducens that could not metabolize acetate oxidized acetate with fumarate as the electron acceptor, demonstrating that acetate can also be syntrophically metabolized via DIET. A co-culture of G. metallireducens and Methanosaeta harundinacea previously shown to syntrophically convert ethanol to methane via DIET metabolized propanol or butanol as the sole electron donor, but not propionate or butyrate. The stoichiometric accumulation of propionate or butyrate in the propanol- or butanol-fed cultures demonstrated that M. harundinaceae could conserve energy to support growth solely from electrons derived from DIET. Co-cultures of G. metallireducens and Methanosarcina barkeri could also incompletely metabolize propanol and butanol and did not metabolize propionate or butyrate as sole electron donors. These results expand the range of substrates that are known to be syntrophically metabolized through DIET, but suggest that claims of propionate and butyrate metabolism via DIET in mixed microbial communities warrant further validation.
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