The effects of three different initial degrees of infection (30, 45 and 70%) of the green alga Scenedesmus incrassatulus with the unicellular fungal parasite Phlyctidium scenedesmi on cell growth, protein, polypeptide and isoenzyme profiles of both SOD and CAT in the host cells were investigated. The effects of the strong oxidant sanosil with algicide and fungicide action and pathogen invasion ...

The effect of indigo dye effluent on the freshwater microalga Scenedesmus quadricauda ABU12 was investigated under controlled laboratory conditions. The microalga was exposed to different concentrations of the effluent obtained by diluting the dye effluent from 100 to 175 times in bold basal medium (BBM). The growth rate of the microalga decreased as indigo dye effluent concentration increased ...

The green alga, Scenedesmus acutus, grows in culture in unicellular form, but it forms colonies (coenobia) when exposed for 48 h to a chemical released by the grazer Daphnia magna. The colony-forming response can be evoked only in growing cells. The Daphnia factor affects colony size but not algal growth rate. The minimum concentration of Daphnia factor that induces colony formation is equivale...

Critical algal blooms in lakes increased the concentration of algal organic matter (AOM), significantly altering the drinking water treatment requirements, including coagulation, oxidation and disinfection. This study utilized Microcystis aeruginosa (cyanobacteria), Scenedesmus quadricauda (Chlorella) and Nitzschia palea (diatom) as models to investigate the AOM's primary characteristics and th...

BACKGROUND Microalgae are diverse in terms of their speciation and function. More than 35,000 algal strains have been described, and thousands of algal cultures are maintained in different culture collection centers. The ability of CO2 uptake by microalgae varies dramatically among algal species. It becomes challenging to select suitable algal candidates that can proliferate under high CO2 conc...

Objective: Green microalgae are fast growing organisms and known to have diverse bioactive compounds biomolecules. The chemical composition antibacterial activities of a green microalga, A. dimorphus BIOTECH 4039 were studied. 
 Material Method: Dried algal biomass was subjected proximate elemental analysis. Methanolic extract used determine the total phenolic content activity microalga. a...

The influence of nutrient limitation on the quality of Scenedesmus acutus as food for Daphnia obtusa is examined. The nature and degree of nutrient limitation greatly influences the rate at which Daphnia converts Scenedesmus biomass into herbivore biomass. From high to low quality, Scenedesmus food is ranked moderately N limited, severely N limited, and severely P limited. Even a very high conc...

BACKGROUND Simultaneous wastewater treatment and lipid production by oleaginous microalgae show great potential to alleviate energy shortage and environmental pollution, because they exhibit tremendous advantages over traditional activated sludge. Currently, most research on wastewater treatment by microalgal are carried out at optimized temperature conditions (25-35 °C), but no information abo...

Fermented swine urine (3%) (v/v) was added to a control medium (CT), named KEP I, and an aquatic microalgal culture (10% Bold's Basal Medium) for growing mixed Scenedesmus species. During a two-month period, the KEP I medium effected, the delayed onset of the stationary phase of cell division in a batch culture. After 31 days, of culturing, the growth rate (3-fold), dry weight (2.6-fold) and am...

The interm ediate o f chlorophyll b iosynthesis, 5-am inolevulinic acid (A L A ), is a necessary prerequisite for the form ation o f protochlorophyllide (PChlide) and protochlorophyll (PChl) in the dark. The application o f A L A to a dark-grown culture o f the pigm ent m utant C-2 A' o f Scenedesmus obliquus increased the am ount o f PChlide 30-fold and the am ount o f PChl about 10-fold. The ...