Ab s t r a c t . The effect of organic-metallic compounds including lead, (C6H5)3PbCl, and tin, (C6H5)3SnCl, on cucumber leaves and green algae Scenedesmus quadricauda were studied. Both compounds, in concentration of 2 μmol dm, caused increased emission of ultra weak chemiluminescence (UCL) of cucumber leaf discs after 20 hours of treatment, and activity of tin triphenyl chloride was stronger ...

The phosphorus-limited growth kinetics of the chlorophyte Scenedesmus quadricauda and the cyanophyte Synechococcus Nägeli were studied by using batch and continuous culturing techniques. The steady-state phosphate transport capability and the phosphorus storage capacity is higher in S. Nägeli than in S. quadricauda. Synechococcus Nägeli can also deplete phosphate to much lower levels than can S...

This work examines the effects of six pesticides on five green algae: Pseudokirchneriella subcapitata, Scenedesmus quadricauda, Scenedesmus obliquus, Chlorella vulgaris and Chlorella pyrenoidosa. The results indicate that the decreasing order of the average toxicity to five algae was: fluazinam > propineb > maneb > mancozeb > zineb > bromoxynil octanoate. however, according to sensitivity magni...

DNA damage is a threat to genomic integrity in all living organisms. Plants and green algae are particularly susceptible to DNA damage especially that caused by UV light, due to their light dependency for photosynthesis. For survival of a plant, and other eukaryotic cells, it is essential for an organism to continuously check the integrity of its genetic material and, when damaged, to repair it...

UNLABELLED BACKGROUND Microalgae have attracted major interest as a sustainable source for biodiesel production on commercial scale. This paper describes the screening of six microalgal species, Scenedesmus quadricauda, Scenedesmus acuminatus, Nannochloropsis sp., Anabaena sp., Chlorella sp. and Oscillatoria sp., isolated from fresh and marine water resources of southern Pakistan for biodies...

This study aimed to investigate the potential use of microalgae Chlorella sorokiniana and Scenedesmus quadricauda for bioremediation olive mill wastewater (OMW), which is a major environmental issue waste product oil production. The investigated effects different dilutions (10% 50%) OMW on growth their ability remove phenolic component hydroxytyrosol (OH-Tyr) enhance antioxidant properties. res...

OBJECTIVE To investigate the impact of various levels of sublethal temperature (26 degrees C, 31 degrees C, 33 degrees C, 36 degrees C, and 39 degrees C) on growth and heat shock protein (hsp) expression in freshwater green alga Scenedesmus quadricauda. METHODS Impact of selected levels of temperature on growth rate (based on optical density), population count, chlorophyll-a and biomass of th...