Genomic diversity across the Rickettsia and 'Candidatus Megaira' genera and proposal of genus status for the Torix group

HR Davison, J Pilgrim, N Wybouw, J Parker… - Nature …, 2022 - nature.com
Members of the bacterial genus Rickettsia were originally identified as causative agents of
vector-borne diseases in mammals. However, many Rickettsia species are arthropod …

Lists of names of prokaryotic Candidatus taxa

A Oren, GM Garrity, CT Parker, M Chuvochina… - 2020 - microbiologyresearch.org
We here present annotated lists of names of Candidatus taxa of prokaryotes with ranks
between subspecies and class, proposed between the mid-1990s, when the provisional …

Deianiraea, an extracellular bacterium associated with the ciliate Paramecium, suggests an alternative scenario for the evolution of Rickettsiales

M Castelli, E Sabaneyeva, O Lanzoni… - The ISME …, 2019 - academic.oup.com
Rickettsiales are a lineage of obligate intracellular Alphaproteobacteria, encompassing
important human pathogens, manipulators of host reproduction, and mutualists. Here we …

'Candidatus Sarmatiella mevalonica' endosymbiont of the ciliate Paramecium provides insights on evolutionary plasticity among Rickettsiales

M Castelli, O Lanzoni, T Nardi… - Environmental …, 2021 - Wiley Online Library
Members of the bacterial order Rickettsiales are obligatorily associated with a wide range of
eukaryotic hosts. Their evolutionary trajectories, in particular concerning the origin of shared …

Diversity and environmental distribution of the cosmopolitan endosymbiont “Candidatus Megaira”

O Lanzoni, E Sabaneyeva, L Modeo, M Castelli… - Scientific Reports, 2019 - nature.com
Members of the order Rickettsiales are often found in association with ciliated protists. An
interesting case is the bacterial endosymbiont “Candidatus Megaira”, which is …

The Hidden World of Rickettsiales Symbionts: “Candidatus Spectririckettsia obscura,” a Novel Bacterium Found in Brazilian and Indian Paramecium caudatum

M Castelli, V Serra, MVX Senra, CK Basuri… - Microbial Ecology, 2019 - Springer
Symbioses between bacteria and eukaryotes are widespread and may have significant
impact on the evolutionary history of symbiotic partners. The order Rickettsiales is a lineage …

'Candidatus Megaira' are diverse symbionts of algae and ciliates with the potential for defensive symbiosis

HR Davison, GDD Hurst, S Siozios - Microbial genomics, 2023 - microbiologyresearch.org
Symbiotic microbes from the genus' Candidatus Megaira'(Rickettsiales) are known to be
common associates of algae and ciliates. However, genomic resources for these bacteria …

A Robust Symbiotic Relationship Between the Ciliate Paramecium multimicronucleatum and the Bacterium Ca. Trichorickettsia Mobilis

T Mironov, E Sabaneyeva - Frontiers in Microbiology, 2020 - frontiersin.org
Close reciprocal interactions in symbiotic systems have suggested the holobiont concept, in
which the host and its microbiota are considered as a single entity. Ciliates are known for …

Novel evolutionary insights on the interactions of the Holosporales (Alphaproteobacteria) with eukaryotic hosts from comparative genomics

M Giovannini, G Petroni… - Environmental …, 2024 - Wiley Online Library
Holosporales are an alphaproteobacterial order engaging in obligate and complex
associations with eukaryotes, in particular protists. The functional and evolutionary features …

Widespread Torix Rickettsia in New Zealand amphipods and the use of blocking primers to rescue host COI sequences

E Park, R Poulin - Scientific Reports, 2020 - nature.com
Endosymbionts and intracellular parasites are common in arthropod hosts. As a
consequence,(co) amplification of untargeted bacterial sequences has been occasionally …