Labile synthetic cadmium complexes are not bioavailable to Pseudokirchneriella subcapitata in resin buffered solutions
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Toxicity Assessment of Expired Pesticides to Green Algae Pseudokirchneriella subcapitata
In order to investigate the effect of expired pesticides on the yield and growth rate of green algae Pseudokirchneriella subcapitata, a study was conducted as per the Organisation for Economic Cooperation and Development (OECD) guideline number 201. Fifteen expired pesticide formulations, most commonly used in Indian agriculture, were tested in comparison with their unexpired counterparts. The ...
متن کاملResponses of the alga Pseudokirchneriella subcapitata to long-term exposure to metal stress.
The green alga Pseudokirchneriella subcapitata has been widely used in ecological risk assessment, usually based on the impact of the toxicants in the alga growth. However, the physiological causes that lead algal growth inhibition are not completely understood. This work aimed to evaluate the biochemical and structural modifications in P. subcapitata after exposure, for 72 h, to three nominal ...
متن کاملOptimization of a Microplate-Based Assay to Assess Esterase Activity in the Alga Pseudokirchneriella subcapitata
The present work describes the optimization of a short-term assay, based on the inhibition of the esterase activity of the alga Pseudokirchneriella subcapitata, in a microplate format. The optimization of the staining procedure showed that the incubation of the algal cells with 20 μmolL fluorescein diacetate (FDA) for 40 min allowed discrimination between metabolic active and inactive cells. Th...
متن کاملToxicity of chlorophenols to Pseudokirchneriella subcapitata under air-tight test environment.
A closed-system algal toxicity test with no headspace was applied to evaluate the toxicity of chlorophenols to Pseudokirchneriella subcapitata. The dissolved oxygen production and the growth rate based on cell density were the response endpoints. Phenol and seven chlorophenols were tested using the above test technique. Median effective concentrations (EC50) range from 0.004 to 25.93 mg/l (base...
متن کاملModification of cell volume and proliferative capacity of Pseudokirchneriella subcapitata cells exposed to metal stress.
The impact of metals (Cd, Cr, Cu and Zn) on growth, cell volume and cell division of the freshwater alga Pseudokirchneriella subcapitata exposed over a period of 72 h was investigated. The algal cells were exposed to three nominal concentrations of each metal: low (closed to 72 h-EC10 values), intermediate (closed to 72 h-EC50 values) and high (upper than 72 h-EC90 values). The exposure to low ...
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ژورنال
عنوان ژورنال: Aquatic Toxicology
سال: 2012
ISSN: 0166-445X
DOI: 10.1016/j.aquatox.2012.07.010