ArticleMarine life science & technology2025
Distinct evolutionary origins and mixed-mode transmissions of methanogenic endosymbionts are revealed in anaerobic ciliated protists.
Article in Marine life science & technology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- FScanR reveals widespread programmed ribosomal frameshifting consistent with neutral evolution in a ciliate model.European journal of protistology · 2026Article
- New contributions to the taxonomy and phylogeny of Cyrtophoria ciliates (Alveolata, Ciliophora, Phyllopharyngea) from China, with description of Dysteria bella sp. nov. and two rare species.BMC microbiology · 2026Article
- Bromodomain protein IBD1 bridges histone acetylation and H2A.Z deposition to fine-tune transcription.Nucleic acids research · 2026Article
- Redox gradients define the ecological niche of ciliates with denitrifying endosymbionts in anoxic lake waters.The ISME journal · 2026Article
- Expanding the Family Tropidoatractidae: Characterization of Two New Tropidoatractus Species (Armophorea: Metopida) From South Korea Based on Morphology and Molecular Phylogeny.The Journal of eukaryotic microbiologyArticle
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11 authors.
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Abstract
Methanogenic endosymbionts are the only known intracellular archaeans and are especially common in anaerobic ciliated protists. Studies on the evolution of associations between anaerobic ciliates and their methanogenic endosymbionts offer an excellent opportunity to broaden our knowledge about symbiosis theory and adaptation of eukaryotes to anoxic environments. Here, the diversity of methanogenic endosymbionts was analyzed with the addition of nine anaerobic ciliate populations that were newly studied by various methods. Results showed that diverse anaerobic ciliates host methanogenic endosymbionts that are limited to a few genera in orders Methanomicrobiales, Methanobacteriales, and Methanosarcinales. For the first time, anaerobic ciliates of the classes Muranotrichea and Prostomatea were found to host methanogenic endosymbionts. Distinct origins of endosymbiosis were revealed for classes Armophorea and Plagiopylea. We posit that armophoreans and plagiopyleans might have harbored Supplementary Information: The online version contains supplementary material available at 10.1007/s42995-025-00295-9.
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