Rickettsiales


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Related to Rickettsiales: Rickettsiaceae, Wolbachia

Rickettsiales

 [rĭ-ket″se-a´lez]
an order of bacteria comprising small, gram-negative, rod-shaped or coccoid, often pleomorphic microorganisms occurring as elementary bodies that typically multiply only inside the cells of the host. Found as parasites in both vertebrates and invertebrates, which may serve as vectors, they may be pathogenic for both humans and other animals.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
References in periodicals archive ?
We also analyzed three bacterial species Escherichia coli K12 MG1655 [62], the cyanobacterium Synechococcus elongatus PCC 7942 [63], and the alphaproteobacterium Rickettsiales bacterium Ac37b [64] and three Archaea species Ignicoccus hospitalis kin4/i, Nanoarchaeum equitans [29], and Lokiarchaeum sp.
Bekker et al., "Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia and Ehrlichia with Neorickettsia, descriptions of six new species combinations and designation of Ehrlichia equi and "HGE agent" as subjective synonyms of Ehrlichia phagocytophila" International Journal of Systematic and Evolutionary Microbiology, vol.
We used Wolbachia pipientis (Alphaproteobacteria: Rickettsiales) as an outgroup.
Focusing on five of the six genera of Rickettsiales (excluding Wolbachia), they discuss the human disease manifestations, the evolution of treatment for infections, challenges for treatment and management, and treatment failures or persistent complaints; epidemiology and public health in the US, as well as the global impact; phylogeny and comparative genomics; the cell biology involved in host invasion; stages of intracellular infection; physiology and metabolism; innate immune response and inflammation in pathogenesis and protection; adaptive immune responses to infection and opportunities for vaccine development; persistence and antigenic variation; transmission; and improving genetic systems.
In Hydra oligactis, the majority of phylotypes belong to the [beta]-Proteobacteria (Rickettsiales).
The significance of an HZ (as a region where genetically different taxa hybridize and leave viable descendants) to this type of study is beyond dispute, but this example is especially relevant: we have recently noticed that Wolbachia (Rickettsiales) infects C.
Natural history of Ehrlichia chaffeensis (Rickettsiales: Ehrlichieae) in the piedmont physiographic province of Georgia.
Other tick-borne obligate intracellular bacteria pathogenic to humans are E chaffeensis and E ewingii, members of the order Rickettsiales, and agents of human monocytotropic ehrlichiosis (HME) and ewingii ehrlichiosis, respectively.
Prevalence of Ehrlichia canis (Rickettsiales: Anaplasmataceae) in dogs and Rhipicephalus sanguineus (Acari: Ixodidae) ticks from Brazil.