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Influence of Algae Age and Population on the Response to TiO 2 Nanoparticles

Author

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  • David M. Metzler

    (School of Arts and Sciences, Gwynedd Mercy University, Gwynedd Valley, PA 19437, USA)

  • Ayca Erdem

    (Department of Environmental Engineering, Akdeniz University, Antalya 07058, Turkey)

  • Chin Pao Huang

    (Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19711, USA)

Abstract

This work shows the influence of algae age (at the time of the exposure) and the initial algae population on the response of green algae Raphidocelis subcapitata to titanium dioxide nanoparticles (TiO 2 NPs). The different algae age was obtained by changes in flow rate of continually stirred tank reactors prior to NP exposure. Increased algae age led to a decreased growth, variations in chlorophyll content, and an increased lipid peroxidation. Increased initial algae population (0.3−4.2 × 10 6 cells/mL) at a constant NP concentration (100 mg/L) caused a decline in the growth of algae. With increased initial algae population, the lipid peroxidation and chlorophyll both initially decreased and then increased. Lipid peroxidation had 4× the amount of the control at high and low initial population but, at mid-ranged initial population, had approximately half the control value. Chlorophyll a results also showed a similar trend. These results indicate that the physiological state of the algae is important for the toxicological effect of TiO 2 NPs. The condition of algae and exposure regime must be considered in detail when assessing the toxicological response of NPs to algae.

Suggested Citation

  • David M. Metzler & Ayca Erdem & Chin Pao Huang, 2018. "Influence of Algae Age and Population on the Response to TiO 2 Nanoparticles," IJERPH, MDPI, vol. 15(4), pages 1-16, March.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:4:p:585-:d:137957
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    References listed on IDEAS

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    1. Fadri Gottschalk & Carsten Lassen & Jesper Kjoelholt & Frans Christensen & Bernd Nowack, 2015. "Modeling Flows and Concentrations of Nine Engineered Nanomaterials in the Danish Environment," IJERPH, MDPI, vol. 12(5), pages 1-22, May.
    2. Agnes G. Oomen & Eric A. J. Bleeker & Peter M. J. Bos & Fleur Van Broekhuizen & Stefania Gottardo & Monique Groenewold & Danail Hristozov & Kerstin Hund-Rinke & Muhammad-Adeel Irfan & Antonio Marcomin, 2015. "Grouping and Read-Across Approaches for Risk Assessment of Nanomaterials," IJERPH, MDPI, vol. 12(10), pages 1-20, October.
    3. Peter M. J. Bos & Stefania Gottardo & Janeck J. Scott-Fordsmand & Martie Van Tongeren & Elena Semenzin & Teresa F. Fernandes & Danail Hristozov & Kerstin Hund-Rinke & Neil Hunt & Muhammad-Adeel Irfan , 2015. "The MARINA Risk Assessment Strategy: A Flexible Strategy for Efficient Information Collection and Risk Assessment of Nanomaterials," IJERPH, MDPI, vol. 12(12), pages 1-15, November.
    4. Merve Ozkaleli & Ayca Erdem, 2018. "Biotoxicity of TiO 2 Nanoparticles on Raphidocelis subcapitata Microalgae Exemplified by Membrane Deformation," IJERPH, MDPI, vol. 15(3), pages 1-12, February.
    5. Sondra S. Teske & Corrella S. Detweiler, 2015. "The Biomechanisms of Metal and Metal-Oxide Nanoparticles’ Interactions with Cells," IJERPH, MDPI, vol. 12(2), pages 1-23, January.
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    Cited by:

    1. Hugh J. Byrne & Sourav P. Mukherjee & Pratap C. Naha, 2018. "Nano–Bio Interactions: Nanomedicine and Nanotoxicology," IJERPH, MDPI, vol. 15(6), pages 1-3, June.

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