Results 111 to 120 of about 913 (156)

Promutagen activation by the green algaSelenastrum capricornutum

Environmental Toxicology and Chemistry, 1998
AbstractThe capability of Selenastrum capricornutum to activate o-phenylenediamine (OPD) and 2-aminofluorene (2-AF) was tested in a modified Ames assay in which the activation component (S9) was replaced by the algal cells. Normal-grown algae did not activate OPD but these cells activated 2-AF by sixfold. Copper induces a peroxidase in S. capricornutum.
Tit-Yee Wong
exaly   +2 more sources

Toxic Effects of Organic Solvents on the Growth of Chlorella vulgaris and Selenastrum capricornutum

Bulletin of Environmental Contamination and Toxicology, 1996
Organic solvents can make their way into the environment as industrial wastes and components of pesticide formulations. In laboratory bioassays, the use of organic solvents is unavoidable since many pesticides and organic pollutants have low water solubilities and need to be dissolved in organic solvents prior to addition into experimental systems. So,
exaly   +4 more sources

Impact of Fuel Oil on the Freshwater Alga Selenastrum capricornutum

Bulletin of Environmental Contamination and Toxicology, 1997
M A, el-Dib, H F, Abou-Waly, A M, el-Naby   +2 more
exaly   +3 more sources

Sorption of organics by Selenastrum capricornutum

Water Research, 1983
Abstract The sorption of eight organic compounds by a representative green alga, Selenastrum capricornutum , was determined by gas-liquid chromatography using a series of linear model experiments. The log 10 bioconcentration factors (BCF), defined as the ratio of the concentration on in the algae to the concentration in the aqueous medium, are as ...
Dennis M. Casserly, Ernst M. Davis, Thomas D. Downs, Rufus K. Guthrie   +3 more
openaire   +1 more source

ADAPTATION OF SELENASTRUM CAPRICORNUTUM (CHLOROPHYCEAE) TO COPPER

Environmental Toxicology and Chemistry, 1986
Abstract Selenastrum capricornutum Printz, growing in a chemically defined medium, was used as a model for studying adaptation of algae to a toxic metal (copper) ion. Cells exhibited lag-phase adaptation to 0.8 μM total Cu (10−12 M free ion concentration) after 20 generations of Cu exposure.
J.S. Kuwabara, H.V. Leland
openaire   +1 more source

Toxicity studies of tetracycline on Microcystis aeruginosa and Selenastrum capricornutum

Environmental Toxicology and Pharmacology, 2013
The assays of first exposure and second exposure effects with tetracycline (TC) on the freshwater cyanobacterium Microcystis aeruginosa and chlorophyceae Selenastrum capricornutum were investigated by determining a battery of parameters including algal biomass, chlorophyll fluorescence index Fv/Fm, superoxide dismutase (SOD) and malonaldehyde (MDA) in ...
Wanwan, Yang, Zepei, Tang, Fanqi, Zhou, Weihao, Zhang, Lirong, Song   +4 more
openaire   +2 more sources

The phototoxicity of benzo[a]pyrene in the green alga Selenastrum capricornutum

Environmental Research, 1984
The effects of selected polycyclic aromatic hydrocarbons (PAHs) on the growth of the green alga Selenastrum capricornutum in three light regimens were examined. In gold fluorescent light, benzo[a]pyrene (BaP) at 12 mg/liter (48 mumole/liter), benz[a]anthracene (BaA) at 40 mg/liter (175 mumole/liter), anthracene (A) at 40 mg/liter (224 mumole/liter ...
T E, Cody, M J, Radike, D, Warshawsky
openaire   +2 more sources

Effects of environmental factors and metals on selenastrum capricornutum lipids

Phytochemistry, 1998
Abstract Studies of the effects of illumination, temperature and heavy metal exposure (Cu 2 , Zn 2 , Cd 2 ) on Selenastrum capricornutum have shown that these factors alter both the total fatty acid and free sterol composition of cells in batch culture.
Christian J McLarnon-Riches, Carole E Rolph, David L.A Greenway, Peter K Robinson   +3 more
openaire   +1 more source

Response of the Ascorbate-Peroxidase of Selenastrum capricornutum to Copper and Lead in Stormwaters

Environmental Monitoring and Assessment, 2001
The green alga Selenastrum capricornutum expresses a unique ascorbate peroxidase, that responds to copper and lead. Attempts were made to test if this peroxidase could be used to monitor the levels of copper and lead in natural waters. When S. capricornutum was exposed to a stormwater sample, the specific activity of the peroxidase in the cell extract ...
M Y, Wong, K R, Sauser, K T, Chung, T Y, Wong, J K, Liu   +4 more
openaire   +2 more sources

Comparative Sensitivity of Selenastrum capricornutum and Lemna minor to Sixteen Herbicides

Archives of Environmental Contamination and Toxicology, 1997
Aquatic plant toxicity tests are frequently conducted in environmental risk assessments to determine the potential impacts of contaminants on primary producers. An examination of published plant toxicity data demonstrates that wide differences in sensitivity can occur across phylogenetic groups of plants.
J F, Fairchild, D S, Ruessler, P S, Haverland, A R, Carlson   +3 more
openaire   +2 more sources