The Holosporaceae are a family of bacteria, included in the order Rickettsiales. The member Holospora is an intracellular parasite found in the unicellular protozoa Paramecium.[1]

The genera Caedibacter, Holospora, Lyticum, Odyssella, Pseudocaedibacter, Pseudolyticum and Tectibacter are Incertae sedis.[1]


Draft genome sequences are available for three Holospora species [2] and Odyssella thessalonicensis [3] .[4]


  1. ^ a b Garrity, George M.; Brenner, Don J.; Krieg, Noel R.; Staley, James T. (eds.) (2005). Bergey's Manual of Systematic Bacteriology, Volume Two: The Proteobacteria, Part C: The Alpha-, Beta-, Delta-, and Epsilonproteobacteria. New York, New York: Springer. ISBN 978-0-387-24145-6.
  2. ^ Dohra et al. (2014). "Draft genome sequences of three Holospora species (Holospora obtusa, Holospora undulata, and Holospora elegans), endonuclear symbiotic bacteria of the ciliate Paramecium caudatum.". FEMS Microbiol Lett. 359 (1): 16–8. doi:10.1111/1574-6968.12577. PMID 25115770. 
  3. ^ "'Candidatus Odyssella thessalonicensis' gen. nov., sp. nov., an obligate intracellular parasite of Acanthamoeba species.". Int J Syst Evol Microbiol. 50 Pt 1: 63–72. Jan 2000. doi:10.1099/00207713-50-1-63. PMID 10826788. 
  4. ^ "Phylogenomic analysis of Odyssella thessalonicensis fortifies the common origin of Rickettsiales, Pelagibacter ubique and Reclimonas americana mitochondrion.". PLoS One 6 (9): e24857. 2011. doi:10.1371/journal.pone.0024857. PMID 21957463. 
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