A5042290158- Microbial Community Ecology and Physiology
- Genomics and Phylogenetic Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Biocrusts and Microbial Ecology
- Diatoms and Algae Research
- Marine and coastal ecosystems
- Protist diversity and phylogeny
- Antibiotics Pharmacokinetics and Efficacy
- Antibiotic Resistance in Bacteria
- Mycorrhizal Fungi and Plant Interactions
- Cephalopods and Marine Biology
- Metal Extraction and Bioleaching
- Marine and environmental studies
- Marine Bivalve and Aquaculture Studies
- Microbial Fuel Cells and Bioremediation
- Methane Hydrates and Related Phenomena
- Algal biology and biofuel production
- Photosynthetic Processes and Mechanisms
- Marine Biology and Ecology Research
- Pharmaceutical and Antibiotic Environmental Impacts
- Infections and bacterial resistance
- Physiological and biochemical adaptations
- Enzyme Production and Characterization
- Fatty Acid Research and Health
- Freshwater macroinvertebrate diversity and ecology
National Institute of Research and Development for Biological Sciences
2015-2025
Babeș-Bolyai University
2017
This report describes the biodiversity and ecology of microbial mats developed in thermal gradients (20 to 65°C) surroundings three drillings (Chiraleu [CH], Ciocaia [CI], Mihai Bravu [MB]) tapping a hyperthermal aquifer Romania. Using metabarcoding approach, 16S rRNA genes were sequenced from both DNA RNA transcripts (cDNA) compared. The relationships between diversity physicochemical factors explored. Additionally, cDNA data used for silico functionality predictions, bringing new insights...
Abstract Global warming and ocean acidification are having an unprecedented impact on marine ecosystems, yet we do not know how phytoplankton will respond to simultaneous changes in multiple drivers. To better comprehend the combined of oceanic acidification, experimentally estimated evolution shifted temperature-CO2 growth response surfaces two strains Skeletonema marinoi that were each previously adapted four different temperature x CO2 combinations. These then grown under a factorial...
The spatiotemporal variation of several carbapenemase-encoding genes (CRGs) was investigated in the influent and effluent municipal WWTPs, with or without hospital sewage input. Correlations among gene abundances, bacterial community composition, wastewater quality parameters were tested to identify possible predictors CRGs presence. Also, role wastewaters mirroring clinical resistance is discussed. taxonomic groups abundances showed an even distribution types, meaning that does not...
Carbapenemase-producing Klebsiella pneumoniae (CPKP) isolated from influent (I) and effluent (E) of two wastewater treatment plants, with (S1) or without (S2) hospital contribution, were investigated. The strains belonged to the Kp1 phylogroup, their highest frequency being observed in S1, followed by S2. phenotypic genotypic hypervirulence tests negative for all tested. At least one carbapenemase gene (CRG), belonging blaKPC, blaOXA-48, blaNDM blaVIM families, was 63% CPKP, more than half...
In freshwater systems, cyanobacteria are strong competitors under enhanced temperature and eutrophic conditions. Understanding their adaptive evolutionary potential to multiple environmental states allows us accurately predict response future To better understand if the combined impacts of nutrient limitation could suppress cyanobacterial blooms, a single strain Microcystis aeruginosa was inoculated into natural phytoplankton communities with different conditions: oligotrophic, addition...
Abstract The positive effect of global warming on the growth cyanobacteria has been widely predicted, but long‐term studies targeting their adaptive potential to higher temperature have not carried out so far. Predicting magnitude and impact cyanobacterial blooms in future as a response requires an understanding how might change long term due climate change. Here we examined exposing three Microcystis aeruginosa strains isolated Romania ambient (22°C) high (26°C) for 6 months. Then,...
In this study the molecular analysis of 24 potentially toxic cyanobacterial strains genus Microcystis isolated from Romania is presented. The potential was assessed by Matrix Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS), which indicated that five out are able to produce microcystins. Beside this, were shown various peptides, including aeruginosins, microginins or cyanopeptolins. Identification PCR performed using primers described in known literature....
Abstract Cyanobacteria have a strong potential to compete well under elevated temperatures. Understanding how they acclimate and evolve climatic stressors can help us accurately predict their response forecasted future conditions. However, it is unclear whether increased temperature results in microevolution and/or changes gene expression. This the first study investigate long‐term exposure influences cyanobacterial genomes. Here, we cultivated three strains of Microcystis aeruginosa (M10,...
Desmodesmus maximus (West & G.S.West) Hegewald, D. perforatus (Lemmermann) E.Hegewald and tropicus (W.B.Crow) form the series Maximi within genus Desmodesmus. is a rare species although it widely distributed in tropical regions including South-East Asia, South America USA. It less common temperate fresh waters, known only from Ukraine. In this study, we report for first time its presence Danube Delta (Puiu Lake), Romania. The morphology molecular phylogeny of two newly isolated strains were...
Understanding the long-term response of key marine phytoplankton species to ongoing global changes is pivotal in determining how oceanic community composition will respond over coming decades. To better understand impact ocean acidification and warming, we acclimated two strains Skeletonema marinoi isolated from natural communities three p CO 2 (400 μatm, 600 μatm 1000 μatm) for 8 months five temperature conditions (7°C, 10°C, 13°C, 16°C 19°C) 11 months. These were then tested microbial...
Series Maximi is a group within Desmodesmus (Chlorophyta) which contains the three species D. maximus, perforatus and tropicus. Besides their large cell sizes, most striking morphological trait unique to members of this genus presence perforations between coenobial cells. The are either present (D. tropicus) or space cells completely sealed maximus). We report here fourth series based on two strains (AICB 1155 AICB 1572) from freshwater environments Danube Delta, Romania. ultrastructure...