Parcourir par auteur "Kormas, K. A."
Voici les éléments 1-20 de 51
-
Abdominal setae and midgut bacteria of the mudshrimp Pestarella tyrrhena
Demiri, A.; Meziti, A.; Papaspyrou, S.; Thessalou-Legaki, M.; Kormas, K. A. (2009)We investigated the diversity of the bacterial 16S rRNA genes occurring on the abdominal setal tufts and in the emptied midgut of the marine mudshrimp Pestarella tyrrhena (Decapoda: Thalassinidea). There were no dominant ... -
Active biomonitoring in Greek coastal waters: Application of the integrated biomarker response index in relation to contaminant levels in caged mussels
Tsangaris, C.; Hatzianestis, I.; Catsiki, V. A.; Kormas, K. A.; Strogyloudi, E.; Neofitou, C.; Andral, B.; Galgani, F. (2011)An integrated approach using biomarkers and contaminant levels in mussels Mytilus galloprovincialis L was employed to assess chemical contamination in Greek coastal waters within the framework of the MYTIMED program. ... -
Airborne algae and cyanobacteria: Occurrence and related health effects
Genitsaris, S.; Kormas, K. A.; Moustaka-Gouni, M. (2011)Published information on airborne algae and cyanobacteria worldwide and the related human health effects is scarce. Since 1844, a total of 353 morphological taxa (genera or species) have been identified in aerobiological ... -
Airborne microeukaryote colonists in experimental water containers: diversity, succession, life histories and established food webs
Genitsaris, S.; Moustaka-Gouni, M.; Kormas, K. A. (2011)Airborne freshwater and marine microeukaryotes in the city of Thessaloniki, situated in Thermaikos Bay, Greece, were examined as sources of colonization of experimental water containers during the period autumn 2007 to ... -
Apparent richness and community composition of Bacteria and Archaea in geothermal springs
Kormas, K. A.; Tamaki, H.; Hanada, S.; Kamagata, Y. (2009)The archaeal and bacterial 16S rRNA gene diversities of the Polihnitos (89 degrees C), Edipsos (81.8 degrees C), Thermopiles (38.9 degrees C), Eleftheres (41.2 degrees C) and Lagadas (35.2 degrees C) geothermal springs in ... -
Application of rpoB sequence similarity analysis, REP-PCR and BOX-PCR for the differentiation of species within the genus Geobacillus
Meintanis, C.; Chalkou, K. I.; Kormas, K. A.; Lymperopoulou, D. S.; Katsifas, E. A.; Hatzinikolaou, D. G.; Karagouni, A. D. (2008)Aim: To investigate the applicability of rpoB gene, which encodes the beta subunit of RNA polymerase, to be used as an alternative to 16S rRNA for sequence similarity analysis in the thermophilic genus Geobacillus. Rapid ... -
Artificially-born "killer" lake: Phytoplankton based water quality and microcystin affected fish in a reconstructed lake
Papadimitriou, T.; Katsiapi, M.; Kormas, K. A.; Moustaka-Gouni, M.; Kagalou, I. (2013)Lake Karla (Greece) is an example of a lake ecosystem which was dried in 1960's and now is restored, facing various anthropogenic pressures, whereas it is also listed in the network of Greek protected areas in terms of its ... -
Bacterial and archaeal phylotypes associated with distinct mineralogical layers of a white smoker spire from a deep-sea hydrothermal vent site (9 degrees N, East Pacific Rise)
Kormas, K. A.; Tivey, M. K.; Von Damm, K.; Teske, A. (2006)A diffusely venting chimney spire from the East Pacific Rise (9 degrees N) was analysed by petrographic thin sectioning and 16S rRNA gene cloning and sequencing in parallel, to correlate microbial community composition ... -
Bacterial and archaeal phylotypes associated with distinct mineralogical layers of a white smoker spire from a deep-sea hydrothermal vent site (9°N, East Pacific Rise)
Kormas, K. A.; Tivey, M. K.; Von Damm, K.; Teske, A. (2006)A diffusely venting chimney spire from the East Pacific Rise (9°N) was analysed by petrographic thin sectioning and 16S rRNA gene cloning and sequencing in parallel, to correlate microbial community composition with ... -
Bacterial phylotypes associated with the digestive tract of the sea urchin Paracentrotus lividus and the ascidian Microcosmus sp
Meziti, A.; Kormas, K. A.; Pancucci-Papadopoulou, M. A.; Thessalou-Legaki, M. (2007)We used sequencing and phylogenetic analysis of PCR-amplified 16S rRNA genes from bacteria that are associated with the esophagus/pharynx, stomach and intestine of two marine sympatric invertebrates but with different ... -
Bacterioplankton growth on extracellular organic carbon from marine microalgal cultures
Kormas, K. A. (2005)Marine bacterial growth on extracellular organic carbon (EOC) of Chlorella minutissima, Dimaliella tertiolecta and Chaetoceros gracilis was studied. EOC was retrieved after filtration of optimum growing algal cultures at ... -
Biodegradation of crude oil by thermophilic bacteria isolated from a volcano island
Meintanis, C.; Chalkou, K. I.; Kormas, K. A.; Karagouni, A. D. (2006)One-hundred and fifty different thermophilic bacteria isolated from a volcanic island were screened for detection of an alkane hydroxylase gene using degenerated primers developed to amplify genes related to the Pseudomonas ... -
Biodiversity of Cold Seep Ecosystems Along the European Margins
Vanreusel, A.; Andersen, A. C.; Boetius, A.; Connelly, D.; Cunha, M. R.; Decker, C.; Hilario, A.; Kormas, K. A.; Maignien, L.; Olu, K.; Pachiadaki, M.; Ritt, B.; Rodrigues, C.; Sarrazin, J.; Tyler, P.; Van Gaever, S.; Vanneste, H. (2009)During the European Commission's Framework Six Programme, HERMES, we investigated three main areas along the European margin, each characterized by the presence of seep-related structures exhibiting different intensity of ... -
Changes of bacterioplankton apparent species richness in two ornamental fish aquaria
Vlahos, N.; Kormas, K. A.; Pachiadaki, M. G.; Meziti, A.; Hotos, G. N.; Mente, E. (2013)We analysed the 16S rRNA gene diversity within the bacterioplankton community in the water column of the ornamental fish Pterophyllum scalare and Archocentrus nigrofasciatus aquaria during a 60-day growth experiment in ... -
Changes of the bacterial assemblages throughout an urban drinking water distribution system
Kormas, K. A.; Neofitou, C.; Pachiadaki, M.; Koufostathi, E. (2010)We analyzed the bacterial 16S rRNA gene diversity throughout the major components of the drinking water distribution system of a ca. 52,000-inhabitants city (Trikala City, Greece) in order to describe the changes of the ... -
Characterization of methanogenic and prokaryotic assemblages based on mcrA and 16S rRNA gene diversity in sediments of the Kazan mud volcano (Mediterranean Sea)
Kormas, K. A.; Meziti, A.; Dahlmann, A.; De Lange, G. J.; Lykousis, V. (2008)The diversity of the methyl-coenzyme reductase A (mcrA) and 16S rRNA genes was investigated in gas hydrate containing sediment from the Kazan mud volcano, eastern Mediterranean Sea. mcrA was detected only at 15 and 20 cm ... -
Comparison of the Norway lobster (Nephrops norvegicus) gut bacterial communities using 16S rDNA clone libraries and pyrosequencing
Meziti, A.; Kormas, K. A. (2013)By comparing 16S rDNA cloning and 454 pyrosequencing in the Nephrops norvegicus midgut, several common bacterial OTUs were detected. However, when only one method is to be selected, it needs to be considered whether the ... -
Cosmopolitan heterotrophic microeukaryotes are active bacterial grazers in experimental oil-polluted systems
Dalby, A. P.; Kormas, K. A.; Christaki, U.; Karayanni, H. (2008)We investigated the population dynamics and prevailing 18S rDNA phylotypes of microeukaryotes (<= 10 mu m) in microcosms containing seawater from either an unpolluted oligotrophic site or a chronically oil-polluted mesotrophic ... -
Cyanobacterial Toxin Degrading Bacteria: Who Are They?
Kormas, K. A.; Lymperopoulou, D. S. (2013)Cyanobacteria are ubiquitous in nature and are both beneficial and detrimental to humans. Benefits include being food supplements and producing bioactive compounds, like antimicrobial and anticancer substances, while their ... -
Dietary differences are reflected on the gut prokaryotic community structure of wild and commercially reared sea bream (Sparus aurata)
Kormas, K. A.; Meziti, A.; Mente, E.; Frentzos, A. (2014)We compared the gut prokaryotic communities in wild, organically-, and conventionally reared sea bream (Sparus aurata) individuals. Gut microbial communities were identified using tag pyrosequencing of the 16S rRNA genes. ...