ISSN:
1432-2048
Keywords:
Blue light
;
Cell culture (gene regulation)
;
Chalcone synthase
;
mRNA transcription
;
Petroselinum (cell culture)
;
Photoreceptor
;
Signal transduction chain
;
Transcription (regulation)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Run-off transcription assays were used to demonstrate that both the ultraviolet (UV)-B and blue-light receptors control transcription rates for chalcone-synthase mRNA in the course of light-induced flavonoid synthesis in parsley (Petroselinum crispum Miller (A.W. Hill)) cell-suspension cultures. Blue and red light alone, presumably acting via a blue-light receptor and active phytochrome (far-red absorbing form) respectively, can induce accumulation of chalcone-synthase mRNA. The extent of the response is however considerably smaller than that obtained when these wavebands are applied in combination with UV light. A preirradiation with blue light strongly increases the response to a subsequent UV pulse and this modulating effect of blue light is stable for at least 20 h. The modulating effect is abolished by a UV induction but can be reestablished by a second irradiation with blue light.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00392811
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