The Effect of Carbon Nanotubes on Rice Seed Germination and Root Growth
There are few researches available on the effects of carbon nanotubes on rice seed germination and root growth. Aiming at this problem, rice seeds were co-cultured with carbon nanotubes of different concentrations. The rice seedling growth situation was o
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The Effect of Carbon Nanotubes on Rice Seed Germination and Root Growth Yumei Jiang, Zetian Hua, Yiqing Zhao, Qindai Liu, Fang Wang and Qin Zhang
Abstract There are few researches available on the effects of carbon nanotubes on rice seed germination and root growth. Aiming at this problem, rice seeds were co-cultured with carbon nanotubes of different concentrations. The rice seedling growth situation was observed including germination percentage rates, length of seeding stem, and root. The absorbance was measured and the root activity was calculated. Experiment results showed that the rice seed germination and root growth were promoted by carbon nanotubes with appropriate concentrations (0 * 100 lg/ml). When the concentration increased to 150 lg/ml, the root length, root activity, and stem length decreased in comparison with the value of 100 lg/ ml, but still slightly higher than the control, although the root and stem lengths were shorter than the control. Our results demonstrated, for the first time, that carbon nanotubes could promote rice seed germination and root growth at lower concentrations, and may have toxic effects at high concentrations. Keywords Rice seed
Carbon nanotubes Germination Root growth
129.1 Introduction Materials of particle size less than 100 nm in at least one dimension are generally classified as nanomaterials. The great potential of using nanoscale particles for different biological and medical applications including gene and drug delivery, Y. Jiang Z. Hua (&) Y. Zhao Q. Liu F. Wang Q. Zhang College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, People’s Republic of China e-mail: [email protected] Y. Jiang Tianjin International Joint Academy of Biotechnology and Medicine, Tianjin 300457, People’s Republic of China
T.-C. Zhang et al. (eds.), Proceedings of the 2012 International Conference on Applied Biotechnology (ICAB 2012), Lecture Notes in Electrical Engineering 250, DOI: 10.1007/978-3-642-37922-2_129, Ó Springer-Verlag Berlin Heidelberg 2014
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biosensing, diagnostic, and tissue engineering was widely documented during the last several years. Most investigations were focused on animals and humans at various levels, and detailed studies and reliable information on the effects of nanomaterials such as carbon nanotubes on plant physiology and plant development at the organism level are very limited. However, there is an extensive interest to investigate the ability of nanoparticles to penetrate plant cell walls and work as smart treatment-delivery systems in plants [1–3]. Rice (Oryza sativa L.) is one of the most important food crops worldwide. To achieve the goals of nano-agriculture, detailed studies on the effects of nanotubes on rice seed germination and development of seedlings are needed. This study is the first report, to our best knowledge, that describes the effect of penetration of rice seed coats by carbon nanotubes.
129.2 Materials and Methods The seeds were the number
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