Prevalence and Phylogenetic Analysis of Lipoprotein-Gene of -A Pilot Study.

() is a key pathogen involved in periodontal diseases. The aim of this study was to investigate the prevalence and phylogenetic origin of the lipoprotein-gene in its most virulent variant, (co-transcribed with as locus ), in different strains collected worldwide. A total of 138 strains were analyzed for the presence of by pooled analysis and subsequently individual PCRs.

Long-term exposure of Daphnia magna to polystyrene microplastic (PS-MP) leads to alterations of the proteome, morphology and life-history.

In the past years, the research focus on the effects of MP on aquatic organisms extended from marine systems towards freshwater systems. An important freshwater model organism in the MP field is the cladoceran Daphnia, which plays a central role in lacustrine ecosystems and has been established as a test organism in ecotoxicology. To investigate the effects of MP on Daphnia magna, we performed a chronic exposure experiment with polystyrene MP under strictly standardized conditions.