Journal
NANOTOXICOLOGY
Volume 8, Issue 2, Pages 179-188Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3109/17435390.2013.766768
Keywords
CuO NPs; toxicity; dissolution; tolerant; translocation
Categories
Funding
- National Natural Science Foundation of China [21177109, 11179025]
- Program for New Century Excellent Talents in University [NCET-11-0455]
Ask authors/readers for more resources
The release of nanoparticles (NPs) to the environment poses an increasing potential threat to biological systems. This study investigated the phytotoxicity and accumulation of copper oxide (CuO) NPs to Elsholtzia splendens (a Cu-tolerant plant) under hydroponic conditions. The 50% effective concentration (EC50) of CuO NPs to E. splendens was about 480 mg/L, implying the tolerance of E. splendens to CuO NPs. The Cu content in the shoots treated with 1000 mg/L CuO NPs was much higher than those exposed to the comparable 0.5 mg/L soluble Cu and CuO bulk particles. CuO NPs-like deposits were found in the root cells and leaf cells. Cu K-edge X-ray absorption near-edge structure analysis further revealed that the accumulated Cu species existed predominantly as CuO NPs in the plant tissues. All these results suggested that CuO NPs can be absorbed by the roots and translocated to the shoots in E. splendens.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available