ArticleScientific reports2019
Diversity and environmental distribution of the cosmopolitan endosymbiont "Candidatus Megaira".
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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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.
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Who cites it
27 citing papers in PubMed, 52 citations in OpenAlex.
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- Rhodotorula mucilaginosa: a new potential human pathogen found in the ciliate Paramecium bursaria.Protoplasma · 2025Article
- Differential gut microbiome composition in three-spined stickleback populations with contrasting levels of mercury accumulation.Frontiers in microbiology · 2025Article
- Addictive manipulation: a perspective on the role of reproductive parasitism in the evolution of bacteria-eukaryote symbioses.Biology letters · 2024Review
- Time-series metagenomics reveals changing protistan ecology of a temperate dimictic lake.Microbiome · 2024Article
- "Candidatus Intestinibacterium parameciiphilum"-member of the "Candidatus Paracaedibacteraceae" family (Alphaproteobacteria, Holosporales) inhabiting the ciliated protist Paramecium.International microbiology : the official journal of the Spanish Society for Microbiology · 2024Article
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- Host association and intracellularity evolved multiple times independently in the Rickettsiales.Nature communications · 2024Article
- 'Microbial genomics · 2023Article
- Metagenome diversity illuminates origins of pathogen effectors.bioRxiv : the preprint server for biology · 2023Article
- Red mark syndrome: Is the aquaculture water microbiome a keystone for understanding the disease aetiology?Frontiers in microbiology · 2023Article
- The Relationship betweenAnimals : an open access journal from MDPI · 2022Article
- Genomic diversity across the Rickettsia and 'Candidatus Megaira' genera and proposal of genus status for the Torix group.Nature communications · 2022Article
- The "Other"Applied and environmental microbiology · 2022Review
- Article
- Natural Shifts in Endosymbionts' Occurrence and Relative Frequency in Their Ciliate Host Population.Frontiers in microbiology · 2021Article
- Morphology, ultrastructure, genomics, and phylogeny of Euplotes vanleeuwenhoeki sp. nov. and its ultra-reduced endosymbiont "Candidatus Pinguicoccus supinus" sp. nov.Scientific reports · 2020Article
- Assigning the Origin of Microbial Natural Products by Chemical Space Map and Machine Learning.Biomolecules · 2020Article
Corrections and comments
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Authors and funding
9 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Members of the order Rickettsiales are often found in association with ciliated protists. An interesting case is the bacterial endosymbiont "Candidatus Megaira", which is phylogenetically closely related to the pathogen Rickettsia. "Candidatus Megaira" was first described as an intracellular bacterium in several ciliate species. Since then it has been found in association with diverse evolutionary distantly-related hosts, among them other unicellular eukaryotes, and also algae, and metazoa, such as cnidarians. We provide the characterization of several new strains of the type species "Candidatus Megaira polyxenophila", and the multidisciplinary description of a novel species, "Candidatus Megaira venefica", presenting peculiar features, which highlight the diversity and variability of these widespread bacterial endosymbionts. Screening of the 16S rRNA gene short amplicon database and phylogenetic analysis of 16S rRNA gene hypervariable regions revealed the presence of further hidden lineages, and provided hints on the possibility that these bacteria may be horizontally transmitted among aquatic protists and metazoa. The phylogenetic reconstruction supports the existence of at least five different separate species-level clades of "Candidatus Megaira", and we designed a set of specific probes allowing easy recognition of the four major clades of the genus.
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