Soil cyanobacteria isolated from the rice paddy fields of 10 different locations across Korea were evaluated by agar plate diffusion test for antifungal activity. Aqueous, petroleum ether, and methanol extracts from one hundred and forty two cyanobacterial strains belonging to the 14 genera were examined for antifungal properties against seven phytopathogenic fungi causing diseases in hot peppe...

The cyanobacterial communities of Lake Pskov were studied in several seasons 2021, and a comparison was made with the data earlier studies. Data on taxonomic composition quantitative characteristics cyanobacteria have been obtained, some species toxic to living organisms are shown. 196 taxa phytoplankton total recorded at four permanent stations lake, 15.8% which cyanobacteria. most similar ter...

In this study, we conducted long-term laboratory and field feeding experiments to investigate the ability of a freshwater bivalve, Nodularia douglasiae (recently renamed N. nipponensis) utilize cyanobacterial cells as food. experiment, which was fed with 15N-labeled Microcystis aeruginosa over 80 days showed an assimilation efficiency 47%. The fatty acid compositions in bivalves reflected sligh...

Cyanobacteria are the most ancient phytoplankton that first appeared at least 2.5 billion years ago and have a prolonged evolutionary history. They can form impenetrable toxic blooms in aquatic ecosystems such as freshwater marine environments. Cyanobacterial produce cyanotoxins endanger ecosystem functioning deteriorate water quality used for recreation, drinking, fisheries, thus, adversely af...

Lichens are symbiotic associations between fungi and photosynthetic algae or cyanobacteria. Microcystins are potent toxins that are responsible for the poisoning of both humans and animals. These toxins are mainly associated with aquatic cyanobacterial blooms, but here we show that the cyanobacterial symbionts of terrestrial lichens from all over the world commonly produce microcystins. We scre...