TABLE 1.
Available genomes of symbionts of ciliates
| Host | Symbiont | Symbiont classification | Localization | GC content (%) | Genome size (Mb) | References |
|---|---|---|---|---|---|---|
| Paramecium caudatum | Holospora obtusa | Bacteria; Alphaproteobacteria; Holosporales; Holosporaceae | Macronucleus | 35.2 | 1.33 | Dohra et al. (2014) |
| Paramecium caudatum | Holospora elegans | Bacteria; Alphaproteobacteria; Holosporales; Holosporaceae | Macronucleus | 36 | 1.27 | Dohra et al. (2014) |
| Paramecium caudatum | Holospora undulata | Bacteria; Alphaproteobacteria; Holosporales; Holosporaceae | Macronucleus | 36.1 | 1.40 | Dohra et al. (2013, 2014) |
| Paramecium bursaria | Holospora curviuscula | Bacteria; Alphaproteobacteria; Holosporales; Holosporaceae | Macronucleus | 37.6 | 1.70 | Garushyants et al. (2018) |
| Paramecium biaurelia | "Caedimonas varicaedens" | Bacteria; Alphaproteobacteria; Holosporales; Caedimonadaceae | Cytoplasm or macronucleus | 42.1 | 1.68 | Suzuki et al. (2015) |
| Paramecium sp. | "Candidatus Fokinia solitaria" | Bacteria; Alphaproteobacteria; Rickettsiales; Midichloriaceae | Cytoplasm | 35.8 | 0.83 | Floriano et al. (2018) |
| Paramecium primaurelia | "Candidatus Deianiraea vastatrix" | Bacteria; Alphaproteobacteria; Rickettsiales; Deianiraeaceae | External cell surface | 32.9 | 1.2 | Castelli et al. (2019) |
| Paramecium tredecaurelia | "Candidatus Sarmatiella mevalonica" | Bacteria; Alphaproteobacteria; Rickettsiales; Rickettsiaceae | Cytoplasm | 38 | 1.27 | Castelli et al. (2021b) |
| Paramecium polycaryum | "Candidatus Gromoviella agglomerans" | Bacteria; Alphaproteobacteria; Holosporales; Holosporaceae | Cytoplasm | 32.2 | 0.589 | Castelli et al. (2021a) |
| Euplotes petzi | Francisella adeliensis | Bacteria; Gammaproteobacteria; Thiotrichales; Francisellaceae | Cytoplasm | 32.6 | 2.05 | Vallesi et al. (2019) |
| Undescribed Plagiopylea | "Candidatus Azoamicus ciliaticola" | Bacteria; Gammaproteobacteria | Cytoplasm | 24.4 | 0.29 | Graf et al. (2021) |
| Kentrophoros sp. | "Candidatus Kentron" clade | Bacteria; Gammaproteobacteria | External cell surface | Approximately 50 | 3.3–5.0 | Seah et al. (2019) |
| Paramecium tetraurelia | Caedibacter taeniospiralis | Bacteria; Gammaproteobacteria; Thiotrichales; Fastidiosibacteraceae | Cytoplasm | 41.3 | 1.32 | Pirritano et al. (2020) |
| Pseudoblepharisma tenue | "Candidatus Thiodictyon intracellulare" | Bacteria; Gammaproteobacteria; Chromatiales; Chromatiaceae | Cytoplasm | 64.2 | 2.9 | Muñoz‐Gómez et al. (2021) |
| Trimyema compressum | Unnamed, strain TC1 | Bacteria; Firmicutes | Cytoplasm | 32.8 | 1.59 | Shinzato et al. (2016) |
| All Euplotes spp. belonging to clade B | Polynucleobacter spp., including Polynucleobacter necessarius | Bacteria; Betaproteobacteria; Burkholderiales; Burkholderiaceae | Cytoplasm | 45.6 | 1.5–1.9 | Boscaro, Felletti, et al. (2013) |
| Euplotes sp. (AntOrgLke) | "Candidatus Organicella extenuata" | Bacteria; Verrucomicrobia | Unknown | 32 | 0.158 | Williams et al. (2021) |
| Euplotes vanleeuwenhoeki (clade A) | "Candidatus Pinguicoccus supinus" | Bacteria; Verrucomicrobia | Cytoplasm | 25.1 | 0.163 | Serra et al. (2020) |
| Metopus contortus | Methanocorpusculum sp. MCE | Archaea; Methanomicrobia; Methanomicrobiales | Cytoplasm | 50.1 | 1.69 | Lind et al. (2018) |
| Nyctotherus ovalis | Methanobrevibacter sp. NOE | Archaea; Methanobacteria; Methanobacteriales | Cytoplasm | 25.4 | 1.92 | Lind et al. (2018) |