Influence of nano-anatase TiO2 on the nitrogen metabolism of growing spinach
- 808 Downloads
Previous research showed that nano-TiO2 could significantly promote photosynthesis and greatly improve growth of spinach, but, we also speculated that an increase of spinach growth by nano-TiO2 treatment might be closely related to the change of nitrogen metabolism. The effects of nano-anatase TiO2 on the nitrogen metabolism of growing spinach were studied by treating them with nano-anatase TiO2. The results showed that, nano-anatase TiO2 treatment could obviously increase the activities of nitrate reductase, glutamate dehydrogenase, glutamine synthase, and glutamic-pyruvic transaminase during the growing stage. Nano-anatase TiO2 treatment could also promote spinach to absorb nitrate, accelerate, inorganic nitrogen (such as NO 3 t- −N and NH 4 + −N) to be translated into organic nitrogen (such as protein and chlorophyll), and enhance the fresh weight and dry weights.
Index EntriesNano-anatase TiO2 spinach nitrate reductase glutamate dehydrogenase inorganic nitrogen organic nitrogen
Unable to display preview. Download preview PDF.
- 3.F. S. Hong, P. Yang, F. Q. Gao, et al.., Effect of nano-anatase TiO2 on spectral characterization of photosystem II particles from spinach, Chem. Res. Chin. Univ. 21(2), 196–200 (2005).Google Scholar
- 6.B. B. Buchanan, W. Gruissen, and R. L. Johones, Biochemistry and Molecular Biology of Plants, Science Press, Beijing, pp. 786–824 (2002).Google Scholar
- 7.W. H. Wu. Plant Physiology, Science Press, Beijing, pp. 128–165, 105–108 (2003), (in Chinese).Google Scholar
- 8.L. N. Ji, J. J. Huang, and T. H. Mo, Bioinoganic Chemistry: Introduction, Zhongshan University Press, Guangzhou, pp. 119–149 (2001) (in Chinese).Google Scholar
- 9.P. Yang, and F. Gao. Bioinorganic Chemistry: Theory, Science Press, Beijing, pp. 186–189 (2002), (in Chinese).Google Scholar
- 10.C. M. Lu, C. Y. Zhang, J. Q. Wen, and G. R. Wu, Research of the effect of nanometer materials on germination and growth enhancement of Glycine Max and its mechanism, Soybean Sci. 21(3), 168–171 (2002) (in Chinese).Google Scholar
- 14.Shanghai Plant Physiology Society ed., Experimental Guideof Modern Plant Physiology, Science Press, Beijing, pp. 154–156 (1999) (in Chinese).Google Scholar