ABSTRACT
Pure cultures of Microcystis aeruginosa, Platymonas viridis and Nephrochloris salina have been grown on the media with different nitrogen and phosphorus content. Their supernatants and pellets, as well as lipid complex, terpene fraction and some its components from M. aeruginosa had selective antibacterial characteristics. The increase of nitrogen content in the medium correlated with the intensification (M. aeruginosa, N. salina) or conservation (P. viridis) of bactericidal activity. The pellet fraction was more active than supernatant (P. viridis) one. The specific cyanobacterial and microalgal inhibitory effect is supposed with respect to the organisms of different evolutionary level.
Subject(s)
Bacteria/drug effects , Cyanobacteria/metabolism , Eukaryota/metabolism , Culture Media/chemistry , Culture Media, Conditioned/chemistry , Cyanobacteria/growth & development , Eukaryota/growth & development , Lipids/pharmacology , Nitrogen , Phosphorus , Proteus mirabilis/drug effects , Staphylococcus aureus/drug effects , Terpenes/pharmacology , Time FactorsABSTRACT
The review includes the analysis of the world literature (1913-1995) about the problems of interrelations, between microorganisms (microphytic algae and cyanobacteria) and marine mammals (whales and dolphins). Special attention is payed to the parasitological, bioindicative and toxicological aspects of microalgae inhabiting the surface of the skin integuments and respiratory organs of cetaceans, as well as their environment. There is the list of the algal species overgrowing the animals bodies and their hosts. The most of the epibionts are belonging to diatoms, there are also some cyanobacteria and green algae. The probability of the influence of the algological factor on the hosts health and a possibility of the microalgae use to evaluate the status of animals and their environment have been discussed.
Subject(s)
Cetacea , Eukaryota/pathogenicity , Animal Diseases , Animals , Cetacea/parasitology , Dinoflagellida , Eukaryota/classification , Protozoan Infections/parasitology , Protozoan Infections, Animal , Respiratory System , SkinABSTRACT
Data on the biological activity of cyanobacterial phagolysates were obtained in experiments. They concern the organisms of different evolutional level, such as some conventional pathogenic bacteria, plant and root parasitic nematodes and phytophagous insects. The authors suppose the specific mechanism of biocidal and inhibitory action of cyanobacteria and their phagolysates in respect to different living systems. These facts are very important for the elaboration of practical aspects of algal metabolites employment in agriculture and medicine.
