Topic
Chlorococcum
About: Chlorococcum is a research topic. Over the lifetime, 268 publications have been published within this topic receiving 7317 citations.
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01 Jan 2013
TL;DR: In this article, the toxic effects of herbicide paraquat (1,1′-dimethyl-4,4′-bipyridinium dichlorine) on the algal ecosystem were assessed.
Abstract: To assess the toxic effects of herbicide paraquat (1,1′-dimethyl-4,4′-bipyridinium dichlorine) on the algal ecosystem, the growths of four cyanobacterial strains (Microcystis aeruginosa XW01, M. aeruginosa PCC7806, Merismopedia sp., and Synechocystis PCC6803) and two green alga strains (Chlorella pyrenoidosa, Chlorococcum sp.472) were measured with different concentrations of paraquat. The Median Effect Concentration (EC50), Lowest Observable Effective Concentration (LOEC), No Observable Effective Concentration (NOEC) and Chronic Value (ChV) of paraquat to the six strains were calculated. The experimental results showed that cyanobacteria were more sensitive than green algae to paraquat, and 96 h-EC50 value of C. pyrenoidosa was 7.4 times higher than the value of M. aeruginosa XW01. Longer exposure time displayed higher toxicity.
3 citations
Journal Article•
TL;DR: Based on the collections of vegetation from 14 sites by line transects in the Schirmacher oasis (SO) of east Antarctica, a total of 24 species consisting 12 species of lichens, 7 species of algae and 5 species of mosses were recorded as mentioned in this paper.
Abstract: Based on the collections of vegetation from 14 sites by line transects in the Schirmacher oasis (SO) of east Antarctica, a total of 24 species consisting 12 species of lichens, 7 species of algae and 5 species of mosses were recorded. The algal flora consists mainly of phytoplanktonic groups dominated by blue green algae cyanobacteria such as Oscillatoria limosa and Phormidium fragile. Only one green alga (Chlorococcum) was found in the present transect study. Rare occurrence of green algae and dominance of blue green algae in the SO suggests that cyanobacterial species are better adapted to the prevailing extremities of climatic conditions of Antarctica.
3 citations
01 Jan 2013
TL;DR: In this article, the microalgae potential of Chlorococcum vitiosum was studied in treating the dye industry wastewater and the results obtained showed promising potential for treatment of industrial effluents with micro algae.
Abstract: The microalgae potential of Chlorococcum vitiosum was studied in treating the dye industry wastewater. The results obtained showed promising potential for treatment of industrial effluents with microalgae. Significant pH reduction and 23.23% reduction in turbidity was obtained. COD of the wastewater was reduced by 13% while
3 citations
01 Jan 2001
TL;DR: The induction of astaxanthin formation by reactive oxygen species in mixotrophic culture of Chlorococcum sp.
Abstract: The induction of astaxanthin formation by reactive oxygen species in mixotrophic culture of Chlorococcum sp. was investigated. H2O2 (0.1 mM) enhanced the total astaxanthin formation from 5.8 to 6.5 mg/g cell dry weight Fe2+ (0.5 mM) added to the medium with H2O2 (0.1 mM) further promoted astaxanthin formation to 7.1 mg/g cell dry weight Similarly, Fe (0.5 mM) together with methyl viologen (0.01 mM) promoted astaxanthin formation to 6.3 mg/g cell dry weight In contrast, an addition of KI (1 mM), a specific scavenger for hydroxyl radicals (OH•), together with H2O2 (0.1 mM) and Fe2+ (0.5 mM), to the medium decreased astaxanthin formation to 1.8 mg/g cell dry weight KI (1 mM) also inhibited the enhancement of carotenogenesis by superoxide anion radicals (O2 -), with a decrease of astaxanthin formation to 1.7 mg/g cell dry weight. This suggested that O2 - might be transformed to OH• before promoting carotenogenesis in Chlorococcum sp.
3 citations
Journal Article•
TL;DR: It is shown that microalgae Chlorococcum alkaliphilus MC-1 can adapt to the cultivation with flue gas, and it is feasible to enlarge the outdoor cultivation of MC- 1 for lipid production coupling with emissions reduction of flueGas.
3 citations