The toxic action and interactions of copper and cadmium to the marine AlgaDunaliella minuta, in both acute and chronic exposure

Visviki, I.; Rachlin, Joseph W.

doi:10.1007/bf01055915

Cited by 55 publications

(30 citation statements)

References 32 publications

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“…1994 . Differences in the biosorption mechanisms between cadmium and copper may explain the higher toxicity exhibited by cadmium as compared to copper Žsee also Lasheen et al, 1990;Visviki and Rachlin, . 1991 . In this study, the combined inhibitory effect of copper and cadmium on cell growth appeared to be stronger than the impact of a single metal at lower Ž Wang et al, 1995 . Of particular significance here is the finding that copper and cadmium had antagonistic interactions at Ž y1 higher metal concentrations 4.17 mg L Cu q ) 2.00 y1 y1 y1…”

Section: Resultsmentioning

confidence: 95%

Individual and combined effects of cadmium and copper on the growth response ofChlorella vulgaris

et al. 1999

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The individual and combined effects of cadmium and copper on the growth response of the green alga, Chlorella vulgaris, were examined. The effects of pH alone, and in combination with copper were also evaluated. An increase in cadmium and copper concentrations caused a significant reduction in the growth of C. vulgaris cells, and the corresponding EC50 values were 1.02 and 4.01 mg L−1, respectively. For a pH range of 2–7, the inhibitory effect due to increased copper concentrations (coupled with the resulting drop in pH) was significantly higher than the impact due to increased acidity (by addition of HCl) alone. At lower metal concentrations (5 mg L−1 Cu + < 2 mg L−1 Cd or 2.5 mg L−1 Cd + < 4 mg L−1 Cu), a combination of copper and cadmium appeared to have a stronger inhibitory effect on cell growth than that of a single metal. In contrast, at higher metal concentrations (5 mg L−1 Cu + > 2 mg L−1 Cd or 2.5 mg L−1 Cd + > 4 mg L−1 Cu), the effect of a single metal exhibited a significantly stronger effect compared to a combination of the two metals. ©1999 John Wiley & Sons, Inc. Environ Toxicol 14: 347–353, 1999

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Section: Resultsmentioning

confidence: 95%

Individual and combined effects of cadmium and copper on the growth response ofChlorella vulgaris

et al. 1999

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“…It ranks close to lead as bio-toxic agents and can induce a wide range of toxicity (Mukherji and Sharma 1987). Growth inhibition in response to increasing cadmium in the medium has also been reported earlier by Visviki and Rachlin (1991) and Thompson and Couture (1991). For example, Chlamydomonus rein- hardtii and Pleurochrysis cartae are reported as gradually reduced growth rate with increase of Cd concentration above 3 x 10 -8 M (Chris and Neil 1999).…”

Section: Discussionmentioning

confidence: 86%

Experiences with Some Toxic and Relatively Accessible Heavy Metals on the Survival and Biomass Production of Amphora costata W. Smith

Mandal¹,

Joshi²,

Bhatt³

et al. 2006

ALGAE

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Amphora costata W. Smith 1853 is a down thrown diatom species and also known as metal corrosive ship-fouling organism. A. costata was isolated from Alang ship breaking yard, Alang and evaluated the toxicity tolerance and growth responses of the cultures exposed to different doses of toxic and relatively accessible heavy metals, such as Fe, Mn, Cd, Co, Cu, Zn, Ni, and Pb in the constantly monitored laboratory culture conditions. The strongest toxic effect was observed on A. costata exposed to Cd even at relatively low concentrations as compared to other metals . The following trend of decreasing order of toxicity i.e. Cd>Zn>Ni>Co>Pb>Cu>Fe was observed, when they were exposed to equal concentration and expose time.

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“…The presence of high concentration of Cd, Cu and Hg in the industrial wastewater showed a decrease in cell division and this may be due to the binding of metals to sulphydryl groups which are important in regulating cell division [37]. Visviki and Rachlin [47] observed the reduction in growth of Dunaliella minuta cells exposed to mixture of Cd and Cu. They concluded this reduction to the binding of these metals to sulfhydryl groups.…”

Section: Discussionmentioning

confidence: 99%

Effect of Heavy Metals on the Desmodesmus quadricauda Isolated from the River Nile, Egypt

Abdulwassi¹

2017

J Bioremediat Biodegrad

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IntroductionThe accumulation of the heavy metals in aquatic organisms leads to danger effect on the aquatic food chain and endanger human health too. Heavy metals are considered the important reasons of the pollution in soil and aquatic ecosystem. The heavy metals cannot be biodegraded by micro-organisms into non-toxic or to volatile compounds as organic pollutants. Due to this reasons, these pollutants will eventually accumulate in the food chain.Industrial wastes, agricultural run-off, municipal waste and accidental spillage are the main sources of the aquatic pollution. As well as the appreciable amounts of pollutants to air come from human activity as factories and automobile exhausts may enter the aquatic water bodies through rainfall or dry fall-out. The Nile receives increasing amounts of waste discharges, from several sources, as the rivers travels northward. River pollution problems are primarily due to human activities as domestic and industrial waste discharge as well as River transportation and agricultural return flows.In the recent decades, the toxicity tests have been developed to expect the probable effect of industrial effluents on the aquatic ecosystem by using algae, crustaceans, mollusks and fishes [1,2]. The toxicity of heavy metals to phytoplankton was reviewed by Ref [3]. The toxicity of Copper and Cadmium was investigated on the alginateimmobilized algae. Ref [4] investigated the use of alginate-immobilized algae for testing the toxicity of cadmium and copper. The industrial wastes discharged on the banks of Periyar River in India were tested by using algal assays [5]. The effects of Zinc smelter waste to some diatoms were investigated by Rao and Mohanchand [6]. The effects of mercury on the cell population, chlorophyll a and photosynthesis of Dunaliella minuta was investigated by Gotsis [7]. The level of heavy metals in water and sediment was done by Sabri et al. [8] at River Tigris at Samarra impoundment (Iraq). Mingazzini [9] evaluated the different methods for quantitative toxicity of the pollutants on the River Po, Italy, by using Selenastrum capricornatum. The mutual effect of some heavy metals AbstractThe wastewater of Iron and Steel Factories contains high level of metallic ions, especially Fe which represents the main component of the waste followed by Zn, Cu, Pb, Ni, Hg, Co, Cd, Mn and Cr. Bioassay experiment were achieved to determine the effect of industrial waste of Iron and Steel Factories at Helwan on growth, chlorophyll a and photosynthetic activity of one alga (Desmodesmus quadricauda) which represent one of the most dominant phytoplankton in the Nile River. The growth rate (counting and chlorophyll a) was more sensitive than photosynthetic activity. A synergistic effect was found between the trace metals of the waste. The toxicity of the waste decreased gradually by time. The EC 50 of the growth rate values indicated that, the inhibitory effect of waste on growth of the alga showed slight decrease during the four days incubation, the phenomenon was enhanced on the 5 t...

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The toxic action and interactions of copper and cadmium to the marine AlgaDunaliella minuta, in both acute and chronic exposure

Cited by 55 publications

References 32 publications

Individual and combined effects of cadmium and copper on the growth response ofChlorella vulgaris

Individual and combined effects of cadmium and copper on the growth response ofChlorella vulgaris

Experiences with Some Toxic and Relatively Accessible Heavy Metals on the Survival and Biomass Production of Amphora costata W. Smith

Effect of Heavy Metals on the Desmodesmus quadricauda Isolated from the River Nile, Egypt

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