ArticleThe ISME journal2026
Intracellular accumulation of hydrophobic 1,3-PDN inhibits methanogenesis in rumen methanogens.
Article in The ISME journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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.
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.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
18 authors.
Funding
Abstract
Methane (CH4) from ruminants is a major source of agricultural greenhouse gas and represents a loss of dietary energy. 3-Nitrooxypropanol (3-NOP) is a known methanogenesis inhibitor, but its hydrophilic nature may limit the cellular accessibility to methanogens. Here, we systematically evaluated 1,3-propanediol dinitrate (1,3-PDN), a more hydrophobic derivative of 3-NOP, for its antimethanogenic potential and underlying mode of action using ruminal fermentation, pure-culture assays, multi-omics analyses, and molecular docking. Intracellular accumulation assays indicated greater cellular accumulation of 1,3-PDN than 3-NOP in rumen-derived methanogen Methanobrevibacter olleyae. Ruminal fermentation assays showed that 1,3-PDN reduced CH4 production by ~55%, and altered hydrogen (H2) metabolism, leading to 11-fold increase in H2 accumulation. Metatranscriptomic profiling revealed that 1,3-PDN significantly altered the active archaeal community, with a notable reduction in Methanobrevibacter_A and suppression of hydrogenotrophic methanogenesis. Molecular docking suggested that 1,3-PDN may bind to the conserved active site of methyl-coenzyme M reductase (MCR), potentially contributing to MCR-associated inhibition. Proteomic analysis further indicated that 1,3-PDN supplementation downregulated key MCR subunits and simultaneously affected other redox-sensitive methanogenesis-related processes, including tetrahydromethanopterin S-methyltransferase subunits and proteins involved in the biosynthesis of cofactors F430 and cobalamin. Nitrogen-equivalent assay suggested partial contribution of nitrite to the methanogenesis inhibition and oxidative effects induced by 1,3-PDN. Together, these findings identify 1,3-PDN as an effective inhibitor of ruminal methanogenesis with enhanced cellular enrichment, providing mechanistic insights for the rational development of new CH4 inhibitors.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.