The taxonomy of cyanobacteria has been substantially modified in the last few decades, particularly after application of modern ultra structural and molecular methods. The present research, therefore, aimed to investigate, through a polyphasic approach, the differences in morphological and genotypic features of two cyanobacteria strains isolated from different agricultural and freshwaters areas...

The paper presents the results of a critical taxonomic revision list cyanobacteria Ukraine and analyzis their zonal, ecological typological distribution. includes 766 species from 150 genera. They belong to class Cyanophyceae Schaftner, four subclasses, 7 orders 46 families. subclass Oscillatoriophycideae (4 orders, 21 families, 65 genera, 333 species) is characterized by greatest diversity. le...

Fish collected after a mass mortality at an artificial lake in south-east Queensland, Australia, were examined for the presence of nodularin as the lake had earlier been affected by a Nodularia bloom. Methanol extracts of muscle, liver, peritoneal and stomach contents were analysed by HPLC and tandem mass spectrometry; histological examination was conducted on livers from captured mullet. Liver...

Cyanobacteria are a group of oxygenic photosynthetic prokaryotes found in almost all habitats on earth including those characterized as extreme environments. It has been observed that the number studies dealing with biodiversity extremophilic cyanobacteria is limited while exploring their bioactive potential even scarcer. The taxonomy three Nostoc-like cyanobacterial strains isolated from shall...

Modern cyanobacteria form a morphologically diversified group. In traditional taxonomy, morphological characters are used to divide them into five subsections [Rippka et al., 1979; Castenholz, 2001]. Cyanobacteria of subsection I (formerly order Chroococcales) and II (Pleurocapsales) are unicellular coccoids. Those of subsections III to V have filamentous forms with varying morphological comple...

Dear Editor, In their recent article published in Environmental Science and Pollution Research, Anna Ogar et al. (2015) have shown, thanks to a careful experimental design, that the addition of diazotrophic bacteria together with mycorrhizal fungi significantly improves plant growth and performance. Strikingly, the addition of inoculum containing only diazotrophs but not mycorrhizal fungi had c...

As part of an on-going project to detect extracellular algal compounds of potential medicinal value aqueous culture supernatants and methanolic cell extracts of randomly selected algae were screened for the presence of bioactive compounds using electrically stimulated guineapig ileum preparations[l] and a brine shrimp assay[2]. Bioactive compounds were detected in the methanolic extract of the ...