Light Intensity Influences Chromium Bioaccumulation and Toxicity in Scenedesmus acutus (Chlorophyceae)

A study of the effects of chromium exposure on the growth of Pseudokirchneriella subcapitata (Korshikov) hindak evaluated by Central Composite Design and Response Surface Methodology

“…In addition, a direct relationship between Cr content and cell mortality was found only when the amount of Cr was related to protein content in S. acutus treated with Cr (VI) Gorbi et al (2001). Corradi et al (1998)) suggested that the ability of S. acutus to detoxify chromium was related to the higher production of carbohydrates and proteins in response to metal exposure.…”

Interaction between a Synthetic Dye Bath and Selenium in Their Toxicity to Dunaliella tertiolecta under Two Light Intensities

“…At 38.4 lE s -1 m -2 , although selenate did not influence the algal response as compared to control, selenite stimulated the growth of algae. This stimulation effect of selenite at low light intensity can be attributed to the adaptation of Dunaliella to the darker environment in the presence of selenite, and this effect is linked to energy-dependent processes as stated by Gorbi et al (2001). The algal growth response to a higher concentration of Se species was not determined, because it is well known that the growth of some species of marine microalgae could be affected by a high concentration of selenite and selenate (Wong and Luis, 1991).…”

Effects of chemicals on microorganisms

“…The herbicide, thiobencarb (3 ppm) reduced the protein content and elevated the carbohydrate content of Anabaena variabilis . The chromium toxicity and chromium bioaccumulation by the green alga, Scenedesmus acutus, was shown to be influenced by light intensity (Gorbi et al, 2001). Low N to P ratios (<1) were found to increase the inhibitory effect of high doses of the herbicide pendimethalin on the green alga, Protosiphon botryoides .…”