Abstract
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.
Abbreviations
- BA:
-
N6-benzyladenine
- MS:
-
Murashige and Skoog (1962)
- NAA:
-
α-Naphthaleneacetic acid
- PAL:
-
L-phenylalanine ammonia-lyase
- PFD:
-
Photosynthetic fluence density
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Guo, B., Liu, YG., Yan, Q. et al. Spectral composition of irradiation regulates the cell growth and flavonoids biosynthesis in callus cultures of Saussurea medusa Maxim. Plant Growth Regul 52, 259–263 (2007). https://doi.org/10.1007/s10725-007-9192-0
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DOI: https://doi.org/10.1007/s10725-007-9192-0