A5080547644- Protist diversity and phylogeny
- Microbial Community Ecology and Physiology
- Marine and coastal ecosystems
- Genomics and Phylogenetic Studies
- Diatoms and Algae Research
- Marine Toxins and Detection Methods
- Wastewater Treatment and Nitrogen Removal
- Calcium Carbonate Crystallization and Inhibition
- Paleontology and Stratigraphy of Fossils
- Methane Hydrates and Related Phenomena
- Parasite Biology and Host Interactions
- Legionella and Acanthamoeba research
- Antifungal resistance and susceptibility
- Cellular transport and secretion
- Bacteriophages and microbial interactions
- Legume Nitrogen Fixing Symbiosis
- Lipid Membrane Structure and Behavior
- Marine Ecology and Invasive Species
- Marine and coastal plant biology
- Electrospun Nanofibers in Biomedical Applications
- Cystic Fibrosis Research Advances
- Plant and Fungal Species Descriptions
- Supramolecular Self-Assembly in Materials
- Hydrogels: synthesis, properties, applications
- Geochemistry and Elemental Analysis
University of Stuttgart
2012-2023
Focus (Germany)
2019-2022
Stuttgart Observatory
2018
Ecological Consulting (Czechia)
2012
Walter de Gruyter (Germany)
2012
Heidelberg University
1996-2003
University of Kaiserslautern
2000
"Neglected Rickettsiaceae" (i.e. those harboured by non-hematophagous eukaryotic hosts) display greater phylogenetic variability and more widespread dispersal than pathogenic ones; yet, the knowledge about their actual host range shift mechanism is scarce. The present work reports characterization following full-cycle rRNA approach (SSU sequence, specific in situ hybridization, ultrastructure) of a novel rickettsial bacterium, herewith proposed as 'Candidatus Megaira polyxenophila' gen....
Abstract Colourless, nonscaled chrysophytes comprise morphologically similar or even indistinguishable flagellates which are important bacterivors in water and soil crucial for ecosystem functioning. However, phylogenetic analyses indicate a multiple origin of such colourless, flagellate lineages. These often referred to as “ Spumella ‐like flagellates” ecological biogeographic studies. Although this denomination reflects an assumed polyphyly, it obscures the taxonomic diversity group and,...
Molecular analyses and subsequent morphological reinvestigation of clonal isolates germinated from cysts previously assigned to Scrippsiella hangoei (Schiller) Larsen revealed considerable differences vegetative cell this cold‐water dinoflagellate the northern Baltic Sea. The presence hexagonal platelets on surface a characteristic acrobase episome agree with description Gymnodinium halophilum Biecheler. However, arrangement amphiesmal vesicles in more than nine latitudinal series indicates...
ABSTRACT Obligate bacterial endosymbionts of paramecia able to form refractile inclusion bodies (R bodies), thereby conferring a killer trait upon their ciliate hosts, have traditionally been grouped into the genus Caedibacter . Of six species described date, only Paramecium caudatum symbiont caryophilus has phylogenetically characterized by its 16S rRNA gene sequence, and it was found be member Alphaproteobacteria related Rickettsiales In this study, taeniospiralis type strain, an...
Bacteria of the family Rickettsiaceae have always been largely studied not only for their importance in medical field, but also as model systems evolutionary biology. In fact, they share a recent common ancestor with mitochondria. The most species, belonging to genera Rickettsia and Orientia, are hosted by terrestrial arthropods include many human pathogens. Nevertheless, findings show that large part biodiversity actually resides outside group well-known pathogenic bacteria. Collecting data...
Coat protein I (COPI)-coated transport vesicles mediate and lipid in the early secretory pathway. The basic machinery required for formation of these intermediates has been elucidated based on reconstitution COPI-coated vesicle from chemically defined liposomes. In this experimental system, coat components coatomer GTP-bound ADP-ribosylation factor (ARF), as well p23 a membrane-bound receptor COPI proteins, were shown to be both necessary sufficient promote formation. Based biochemical...
Chlamydiae are a unique group of obligate intracellular bacteria comprising important pathogens vertebrates as well symbionts free-living amoebae. Although there is ample molecular evidence for huge diversity and wide distribution chlamydiae in nature, environmental currently represented by only few isolates. This paper reports the recovery novel chlamydia strain from activated sludge co-cultivation with Acanthamoeba sp. The recovered UV-7 showed characteristic morphology chlamydial...
Abstract Among the bacterial symbionts harbored by model organism Paramecium , many still lack a recent investigation that includes molecular characterization. The genus Lyticum consists of two species large-sized bacteria displaying numerous flagella, despite their inability to move inside hosts' cytoplasm. We present multidisciplinary redescription both species, using deposited type strains as well newly collected material. On basis 16S rRNA gene sequences, we assigned order Rickettsiales...
Holospora and related bacteria are a group of obligate Paramecium symbionts. Characteristic features their infectivity, the presence two distinct morphotypes, usually strict specialization for single species as host nuclear compartment (either somatic or generative nucleus) reproduction. caryophila steps out line, naturally occurring in biaurelia caudatum. This study addresses phylogenetic relationship among H. other based on 16S rRNA gene sequence comparison analyzing type strain seven new...
Abstract Ciliates are abundant unicellular organisms capable of resisting high concentrations metal ions in the environment caused by various anthropogenic activities. Understanding cellular pathways involved resistance to and detoxification elements is required predict impact ciliates on environmental element cycles. Here, we investigated so far unknown process tolerance, uptake bioaccumulation emerging rare earth gadolinium (Gd) common ciliate Tetrahymena pyriformis. Gd treatment results...