Abstract:
:Acanthamoebae feed on bacteria but are also frequent hosts of bacterial symbionts. Here, we describe the stable co-occurrence of two symbionts, one affiliated to the genus Parachlamydia and the other to the candidate genus Paracaedibacter (Alphaproteobacteria), within a clinical isolate of Acanthamoeba hatchetti genotype T4. We performed fluorescence in situ hybridization (FISH) and transmission electron microscopy (TEM) to describe this symbiosis. Our study adds to other reports of simultaneous co-occurrence of two symbionts within one Acanthamoeba cell.
journal_name
Eur J Protistoljournal_title
European journal of protistologyauthors
Müller A,Walochnik J,Wagner M,Schmitz-Esser Sdoi
10.1016/j.ejop.2016.04.002subject
Has Abstractpub_date
2016-10-01 00:00:00pages
21-25eissn
0932-4739issn
1618-0429pii
S0932-4739(16)30021-9journal_volume
56pub_type
杂志文章abstract::Nuclear phenomena at conjugation of the multimicronucleate ciliate Blepharisma japonicum were investigated by using fluorescence microscopy. Several hours after cells united in pairs, micronuclei differentiated into meiotic micronuclei and "somatomicronuclei". Meiotic micro-nuclei participated in conventional sexual p...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/S0932-4739(11)80340-8
更新日期:1991-06-21 00:00:00
abstract::The free-living anaerobic flagellate Psalteriomonas vulgaris n. spec. is described. The organism has four flagella of equal length which arise immediately subapically to the anterior part of the cell, within the apex of the ventral groove. The ultrastructural organization of the mastigont system and the ventral groove...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/S0932-4739(11)80302-0
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abstract::The apostome ciliate Hyalophysa chattoni, a symbiont of the estuarine grass shrimp Palaemonetes pugio, was tested for its growth and reproductive ability in a wide range of salinities from 0.1 to 55 ppt. Shrimp, with their attached ciliates, were slowly acclimated to different salinities in order to assess protozoan c...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/j.ejop.2007.11.002
更新日期:2008-05-01 00:00:00
abstract::Copidognathus nautilei Bartsch, 1997, from a hydrothermal vent field of the Mid-Atlantic Ridge at about 13 degrees N, 45 degrees W and 4090 m depth, was infested with the suctorian Corynophrya abyssalis n. sp., with up to 58 epizoans per mite. The new suctorian has a sacciform body with seven longitudinal ribs, a comp...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/j.ejop.2010.02.001
更新日期:2010-08-01 00:00:00
abstract::I discuss how different feeding modes and related cellular structures map onto the eukaryote evolutionary tree. Centrally important for understanding eukaryotic cell diversity are Loukozoa: ancestrally biciliate phagotrophic protozoa possessing a posterior cilium and ventral feeding groove into which ciliary currents ...
journal_title:European journal of protistology
pub_type: 杂志文章,评审
doi:10.1016/j.ejop.2012.06.001
更新日期:2013-05-01 00:00:00
abstract::A new Naegleria species, N. andersoni, is described that occurs world-wide. The new species consists of two subspecies and can be distinguished from previously described species on the basis of antigenic, isoenzyme and restriction enzyme DNA fragment differences and in maximum growth temperature tolerated. N. anderson...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/S0932-4739(88)80022-1
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journal_title:European journal of protistology
pub_type: 杂志文章
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journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/S0932-4739(88)80038-5
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journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/S0932-4739(11)80004-0
更新日期:1992-11-20 00:00:00
abstract::This paper summarises the Symposium 'Concepts in Protistology', during the VI European Congress of Protistology, Berlin, 25-29 July 2011. There is an increasing focus on cataloguing the number of species on earth, species barcoding initiatives, and the increasing need to reconcile molecular with morphological data in ...
journal_title:European journal of protistology
pub_type:
doi:10.1016/j.ejop.2011.11.004
更新日期:2012-05-01 00:00:00
abstract::Noctiluca scintillans (Macartney) Kofoid et Swezy, 1921 is an unarmoured heterotrophic dinoflagellate with a global distribution, and has been considered as one of the ancestral taxa among dinoflagellates. Recently, 18S rDNA, actin, alpha-, beta-tubulin, and Hsp90-based phylogenies have shown the basal position of the...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/j.ejop.2009.11.001
更新日期:2010-05-01 00:00:00
abstract::Expression of surface antigens is usually mutually exclusive, meaning that only one protein is present on the cell surface. With the RNAi feeding technology we induce serotype shifts in Paramecium tetraurelia which are demonstrated to be incomplete, meaning that the cells remain in a shifting state. The coexpression o...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/j.ejop.2005.09.003
更新日期:2006-03-01 00:00:00
abstract::The effects of 0.2-2.0 mM PtCl(4) have been investigated, the purpose was to test whether the compound would affect Tetrahymena in a manner similar to that of cis-dichlorodiammine-platinum(II), or cisplatin, which in 0.83 mM inhibits cell proliferation for 24 h and induces diminution of the inner mitochondrial membran...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/S0932-4739(11)80044-1
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abstract::A new ciliate species (Cyclidium porcatum) is the first freshwater anaerobic scuticociliate to be cultured and described. It contains a unique tripartite structure consisting of hydrogenosomes (confirmed by cytochemical staining for hydrogenase), interspersed with methanogens (confirmed by auto fluorescence and in sit...
journal_title:European journal of protistology
pub_type: 杂志文章
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abstract::Protistan parasites have an undisputed global health impact. However, outside of a few key exceptions, e.g. the agent of malaria, most of these infectious agents are neglected as important health threats. The Symposium entitled "Free-living amoebae and neglected pathogenic protozoa: health emergency signals?" held at ...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/j.ejop.2020.125760
更新日期:2020-11-28 00:00:00
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journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/S0932-4739(11)80175-6
更新日期:1990-03-09 00:00:00
abstract::Hyalophysa clampi Browning and Landers, 2012 was reexamined to determine all stages in the life cycle of this symbiotic ciliate. The cell feeds as a normal exuviotroph within the exoskeleton of its molted crayfish host but does not encyst following the trophont stage. Trophonts transform into swimming tomont stages, w...
journal_title:European journal of protistology
pub_type: 杂志文章
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journal_title:European journal of protistology
pub_type: 杂志文章
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journal_title:European journal of protistology
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更新日期:2018-10-01 00:00:00
abstract::Lake Tanganyika is world famous for a fauna that is rich in endemic species. On the other hand, it seems to be particularly poor in species of planktonic ciliates. Only the coastal infusorial fauna, for the most part mesopsammic, constitutes an extensive biomass with relatively few species. However, some are character...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/S0932-4739(11)80144-6
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abstract::For many years, the genus Massisteria (Cercozoa, Leucodictyida) comprised only one species, M. marina. This small species has a biphasic life cycle and feeds through filose, radiating pseudopodia. It has a distinct swimming form and is regularly detected in association with detritus aggregates. However, environmental ...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/j.ejop.2015.05.002
更新日期:2015-08-01 00:00:00
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journal_title:European journal of protistology
pub_type: 杂志文章
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journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/j.ejop.2018.01.003
更新日期:2018-04-01 00:00:00
abstract::Human adenoviruses are responsible for a wide range of clinical infections and are present in aquatic environments, including river, seawater, drinking-water and sewage. Free-living amoebae (Acanthamoeba) in the same environments may internalize them and other microorganisms can act as a reservoir for the internalized...
journal_title:European journal of protistology
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journal_title:European journal of protistology
pub_type: 杂志文章
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更新日期:2010-08-01 00:00:00
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journal_title:European journal of protistology
pub_type: 杂志文章
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journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/S0932-4739(11)80317-2
更新日期:1992-02-21 00:00:00
abstract::We observed reproductive swarmer cells of the nassellarian and spumellarian polycystine radiolarians Didymocyrtis ceratospyris, Pterocanium praetextum, Tetrapyle sp., and Triastrum aurivillii using light, scanning and transmission electron microscopy. The swarmer cells had subspherical to ovoid or spindle shapes with ...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/j.ejop.2016.02.007
更新日期:2016-06-01 00:00:00
abstract::Species in the genera Hexasterias and Halodinium have been recorded over the last decades as acritarchs in palynological and/or plankton studies. In paleoenvironmental studies, these resting stages are often interpreted as indicators of freshwater input. The biological affinity of these genera has never been definitel...
journal_title:European journal of protistology
pub_type: 杂志文章
doi:10.1016/j.ejop.2018.09.002
更新日期:2018-10-01 00:00:00