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Karimi, Reza, Norastehnia, Akbar, Abbaspour, Hossein, Saeidi Sar, Sakineh, Naeemi, Akram. (1396). Effects of copper oxide nanoparticles on the growth of Chlorella vulgaris. , 7(1), 11-20. doi: 10.22059/pbs.2018.226951.1253
Reza Karimi; Akbar Norastehnia; Hossein Abbaspour; Sakineh Saeidi Sar; Akram Sadat Naeemi. "Effects of copper oxide nanoparticles on the growth of Chlorella vulgaris". , 7, 1, 1396, 11-20. doi: 10.22059/pbs.2018.226951.1253
Karimi, Reza, Norastehnia, Akbar, Abbaspour, Hossein, Saeidi Sar, Sakineh, Naeemi, Akram. (1396). 'Effects of copper oxide nanoparticles on the growth of Chlorella vulgaris', , 7(1), pp. 11-20. doi: 10.22059/pbs.2018.226951.1253
Karimi, Reza, Norastehnia, Akbar, Abbaspour, Hossein, Saeidi Sar, Sakineh, Naeemi, Akram. Effects of copper oxide nanoparticles on the growth of Chlorella vulgaris. , 1396; 7(1): 11-20. doi: 10.22059/pbs.2018.226951.1253

Effects of copper oxide nanoparticles on the growth of Chlorella vulgaris

Progress in Biological Sciences
مقاله 2، دوره 7، شماره 1، شهریور 2017، صفحه 11-20    اصل مقاله (1.33 M)
نوع مقاله: Original Research Papers
شناسه دیجیتال (DOI): 10.22059/pbs.2018.226951.1253
نویسندگان
Reza Karimi1؛ Akbar Norastehnia* 2؛ Hossein Abbaspour1؛ Sakineh Saeidi Sar1؛ Akram Sadat Naeemi3
1Islamic Azad University, Damghan branch, Iran
2University of Guilan
3University of Guilan, Rasht, Iran,
چکیده
The increase of copper oxide nanoparticle (CuO-NP) utilization in industry during recent years has resulted in their entry into aquatic ecosystems. In light of this fact, we have studied the toxicity of CuO-NPs at various concentrations on Chlorella vulgaris using an algal growth inhibition test (OECD201). Chlorella vulgaris was grown in positive Zander (Z-8 + N) media in a growth chamber. After reaching to the logarithmic growth phase, the algae were exposed to various concentrations of CuO-NPs at intervals of 24, 48 and 72 hours. Algal cell numbers were counted daily and the data were analyzed by Probit analysis. Some parameters such as: the effective concentration (EC10, EC50, EC90), no observed effect concentration (NOEC), specific growth rate (μ), doubling time (G) and percentage growth inhibition (I %) were calculated. The values of EC10 = 12.588, EC50 = 43.699, EC90 = 152.019 and NOEC = 4.3699 mg/L were obtained after 72 hours. The results showed significant differences between control and treatments at specified intervals of cell density and percentage of growth inhibition (P <0.05). In addition, chlorophyll and carotenoid content in treated cells were significantly lower compared to those in control samples; a decrease in the efficiency of photosynthesis is very probably a major mechanism in the reduced growth and viability of C. vulgaris exposed to CuO-NPs.
کلیدواژه‌ها
Toxicity of nanoparticles؛ Percent inhibition of growth؛ Specific growth rate؛ photosynthetic pigments
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