Effect of ZnO Nanoparticles on Medicago sativa at the Germination Stage

Xin Xin Wang; Liang Wu; Ping Zhou; Chen Li; Li Bin Zhao; Wei An; Yu Chen

doi:10.4028/www.scientific.net/AMM.665.583

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 665Effect of ZnO Nanoparticles on Medicago sativa at...

Effect of ZnO Nanoparticles on Medicago sativa at the Germination Stage

Abstract:

Phytotoxicity of manufactured nanoparticles in plants has received increasing attention. However, little information is available regarding the sensitive factor of Medicago sativa exposed to ZnO nanoparticles. The results showed ZnO nanoparticles had clearly effect on shoot length, shoot weight, shoot diameter, root/shoot ratio, root length, root weight, root diameter, root activity and mitotic index of Medicago sativa. Only root activity increased with the increasing concentration of ZnO nanoparticles. Principal component analysis showed root activity had a maximum absolute value in the first principal component, which indicated root activity was the key factor contributed to the variance. Therefore, root activity of Medicago sativa may serve as potential biomarker to indicate the pollution of ZnO nanoparticles.

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Periodical:

Applied Mechanics and Materials (Volume 665)

Pages:

583-586

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.665.583

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Online since:

October 2014

Authors:

Xin Xin Wang*, Liang Wu, Ping Zhou, Chen Li, Li Bin Zhao, Wei An, Yu Chen

Keywords:

Ecotoxicity, Mitotic Index, Principal Component Analysis (PCA), Root Activity

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