Mitochondria are key eukaryotic organelles that perform several essential functions. Not
surprisingly, many intracellular bacteria directly or indirectly target mitochondria, interfering …

Rickettsiales are a lineage of obligate intracellular Alphaproteobacteria, encompassing
important human pathogens, manipulators of host reproduction, and mutualists. Here we …

Symbiosis between prokaryotes and microbial eukaryotes (protists) has broadly impacted
both evolution and ecology. Endosymbiosis led to mitochondria and plastids, the latter …

Elucidating the timescale of the evolution of Alphaproteobacteria, one of the most prevalent
microbial lineages in marine and terrestrial ecosystems, is key to testing hypotheses on their …

Rickettsiales are obligate intracellular bacteria originally found in metazoans, but more
recently recognized as widespread endosymbionts of various protists. One genus was …

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 …

Members of the order Rickettsiales are often found in association with ciliated protists. An
interesting case is the bacterial endosymbiont “Candidatus Megaira”, which is …

Midichloria spp. are intracellular bacterial symbionts of ticks. Representatives of this genus
colonise mitochondria in the cells of their hosts. To shed light on this unique interaction we …

Holosporales are an alphaproteobacterial lineage encompassing bacteria obligatorily
associated with multiple diverse eukaryotes. For most representatives, little is known on the …

We characterized a novel Holospora-like bacterium (HLB)(Alphaproteobacteria,
Holosporales) living in the macronucleus of the brackish water ciliate Frontonia salmastra …