Effect of Nitric Oxide on the Secondary Metabolites of Taxus chinensis var. mairei under UV-B Exposure

Abstract:

In this paper, the effect of nitric oxide (NO) on the secondary metabolites of Taxus chinensis var. mairei under elevated UV-B radiation was studied. The 5-year-old seedlings were used as test materials. The sodium nitroprusside (SNP) was as the NO donor and Carboxy-PTIO potassium salt (cPTIO) as the NO scavenger. The results showed that the SNP, UV, UV-B+SNP treatments significantly increased the contents of photosynthetic pigments (p<0.05). The contents of chlorophyll a, chlorophyll b, carotenoid and total chlorophyll exhibited CK < cPTIO < UV-B+cPTIO < UV-B < SNP < UV-B+SNP. SNP, cPTIO, UV-B, UV-B+SNP and UV-B+cPTIO significantly increased the concentrations of flavonoids, condensed tannins, total phenolics and taxol (p<0.05). Spraying SNP and cPTIO had significant effect on the taxol concentration (p<0.05). The concentrations of flavonoids, condensed tannins, total phenolics and taxol reached the maximum under the UV-B+cPTIO treatment. Spraying different concentrations of SNP or cPTIO might affect the NO content in plants, and then impact on the secondary metabolism, which mechanism needs further investigation.

• Periodical: Advanced Materials Research (Volumes 1073-1076)
• Pages: 114-117
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1073-1076.114
• Online since: December 2014
• Authors: De Wen Li*, Mei Lan Li, Ying Liu, Yuan Gang Zu
• Keywords: Nitric Oxide, Secondary Metabolites, Taxol, Taxus chinensis Var. mairei, UV-B Radiation

References

[1] M. Caldwell, A.H. Teramura, M. Tevini, J.F. Bornman, L.O. Bjorn, G. Kulandaivelu: Ambio. Vol. 24 (1995), pp.166-173.

[2] M.M. Caldwell, L.O. Bjorn, J.F. Bornman, S.D. Flinta, G. Kulandaivelu, A.H. Teramura, M. Tevini: J. Photochem. Photobiol. B: Biol. Vol. 46 (1998), pp.40-52.

[3] Y.G. Zu, H.H. Pang, J.H. Yu and D.W. Li: J. Photochem. Photobiol. B: Biol. Vol. 98 (2010), pp.152-158.

[4] D.E. Koshland: Science Vol. 258 (1992), p.1861.

[5] D.W. Li, X.X. Wei, J.H. Yu and Y.G. Zu: Advanced Materials Research. Vol. 183 (2011), pp.427-431.

[6] D.W. Li, M.L. Li, J.H. Yu and Y.G. Zu: Chin. J. Ecol. Vol. 31 (2012), pp.2203-2208.

[7] A.R. Wellburn: J. Plant. Physiol. Vol. 144 (1994), pp.307-313.

[8] R.M. Mirecki and A.H. Teramura: Plant Physiol. Vol. 74 (1984), pp.475-480.

[9] B. Wodala, Z. Deák, I. Vass, L. Erdei and F. Horváth: Acta Biol. Szeged. Vol. 49 (2005), pp.7-8.

[10] X. Tian and Y. Lei: Biol. plantarum Vol. 50 (2006), pp.775-778.

[11] Y.F. Xu, J.J. Fu, X. Chu, Y.F. Sun, H. Zhou and T.M. Hu: Scientia Horticulturae Vol. 162 (2013), pp.1-10.