Spectral composition of irradiation regulates the cell growth and flavonoids biosynthesis in callus cultures of Saussurea medusa Maxim
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- 作者：Bin Guo ; Yong-Gang Liu ; Qiong Yan and Chun-Zhao Liu
- 关键词：Callus culture ; Cell growth ; Flavonoids biosynthesis ; Spectral radiance ; Saussurea medusa
- 刊名：Plant Growth Regulation
- 出版年：2007
- 出版时间：July, 2007
- 年：2007
- 卷：52
- 期：3
- 页码：259-263
- 全文大小：171 KB
文摘
Cell growth, flavonoids biosynthesis and L-phenylalanine ammonia-lyase (PAL) activity were studied in callus cultures of Saussurea medusa Maxim. under different types of spectral radiance. After 21 days, red light significantly improved the callus growth, but inhibited the biosynthesis of flavonoids in callus cultures. However, blue light was found to enhance the biosynthesis of flavonoids, although callus growth under this spectrum was comparable with that under white and other coloured spectra, such as green and yellow. The accumulation of flavonoids in callus cultures was related to the PAL activity, which was found to be stimulated by the spectral composition of irradiation.