Impact of nano titanium dioxide exposure on cellular structure of Anabaena variabilis and evidence of internalization

  • Cherchi C
  • Chernenko T
  • Diem M
 et al. 
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The present study investigated the impact of nano titanium dioxide (nTiO(2) ) exposure on the cellular structures of the nitrogen-fixing cyanobacteria Anabaena variabilis. Results of the present study showed that nTiO(2) exposure led to observable alteration in various intracellular structures and induced a series of recognized stress responses, including production of reactive oxygen species (ROS), appearance and increase in the abundance of membrane crystalline inclusions, membrane mucilage layer formation, opening of intrathylakoidal spaces, and internal plasma membrane disruption. The production of total ROS in A. variabilis cells increased with increasing nTiO(2) doses and exposure time, and the intracellular ROS contributed to only a small fraction (

Author-supplied keywords

  • Algae
  • Anabaena variabilis
  • Ecotoxicity
  • Nano titanium dioxide
  • Nanomaterials

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  • Carla Cherchi

  • Tatyana Chernenko

  • Max Diem

  • April Z. Gu

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