Defensive extrusive ectosymbionts of Euplotidium (Ciliophora) that contain microtubule-like structures are bacteria related to Verrucomicrobia.
- G. Petroni, S. Spring, K. Schleifer, F. Verni, G. Rosati
- BiologyProceedings of the National Academy of Sciences…
- 15 February 2000
The prokaryotic vs. eukaryotic nature of epixenosomes was resolved by comparative sequence analysis of amplified small subunit rRNA genes and in situ hybridization with fluorescently labeled rRNA-targeted polynucleotide probes.
A molecular approach to the tangled intrageneric relationships underlying phylogeny in Euplotes (Ciliophora, Spirotrichea).
Small subunit rRNA sequences of 11 morphologically defined species colonizing different habitats were determined and pointed to a high divergence between this genus and the other Spirotrichea, together with a high variability within the genus Euplotes.
Resting cysts: A survival strategy in Protozoa Ciliophora
The different phases and aspects of the encystment process in ciliates, such as the ecological role, the cyst formation, the morphological characteristics of the cysts and their dynamic state during the time and the excysting process are reviewed on the basis on the authors' own results and literature data.
A Multidisciplinary Approach to Describe Protists: a Morphological, Ultrastructural, and Molecular Study on Peritromus kahli Villeneuve-Brachon, 1940 (Ciliophora, Heterotrichea)
- G. Rosati, L. Modeo, M. Melai, G. Petroni, F. Verni
- BiologyJournal of Eukaryotic Microbiology
- 1 January 2004
The molecular phylogenetic analysis indicated that Peritromus diverged early from other members of the Class Heterotrichea, and the dorso-ventral differentiation that certainly influences the behavior of P. kahli may have been selected as an adaptation to the constraints of the interstitial habitat.
Focusing on genera to improve species identification: revised systematics of the ciliate Spirostomum.
Molecular systematics and ultrastructural characterization of a forgotten species: Chattonidium setense (Ciliophora, Heterotrichea)
- L. Modeo, G. Rosati, I. Andreoli, S. Gabrielli, F. Verni, G. Petroni
- BiologyProceedings of the Japan Academy. Series B…
- 12 February 2006
The presence of the aboral cavity complex, a unique feature never described in other ciliates, and its peculiar organization revealed by ultrastructural analysis fully justify the maintenance of Chattonidium in the separate family Chattonidiidae, established by Villeneuve-Brachon in 1940.
‘Candidatus Megaira polyxenophila’ gen. nov., sp. nov.: Considerations on Evolutionary History, Host Range and Shift of Early Divergent Rickettsiae
The presence of the same bacterial species within different, evolutionary distant, hosts indicates that 'Candidatus Megaira polyxenophila' recently underwent several distinct host shifts, thus suggesting the existence of horizontal transmission pathways and a new interpretation of the origin and phylogenetic diversification of rickettsia.
Polynucleobacter Bacteria in the Brackish‐Water Species Euplotes harpa (Ciliata Hypotrichia)
Antibiotic experiments showed that the elimination of the bacteria stops the reproductive cycle in E. harpa, as has been shown for the freshwater Euplotes species.
“Candidatus Gortzia shahrazadis”, a Novel Endosymbiont of Paramecium multimicronucleatum and a Revision of the Biogeographical Distribution of Holospora-Like Bacteria
A novel species belonging to the “Ca. Gortzia” genus, detected in P. multimicronucleatum, a ciliate for which infection by an HLB has not been reported, discovered in India is described.