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REGULATION OF CHLOROPLAST DEVELOPMENT BY RED AND BLUE LIGHT
Author(s) -
Buschmann C.,
Meier D.,
Kleudgen H. K.,
Lichtenthaler H. K.
Publication year - 1978
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1978.tb07587.x
Subject(s) - chloroplast , greening , etiolation , thylakoid , photosynthesis , chlorophyll , blue light , chloroplast stroma , botany , red light , spectral composition , biology , chlorophyll a , chemistry , biophysics , biochemistry , optics , physics , ecology , gene , enzyme
There are specific differences between red and blue light greening of etiolated seedlings of Hordevm vulgare L. Blue light results in a different prenyl lipid composition of chloroplast as compared to red light of equal quanta density. This is documented by a much higher prenylquinone content, higher chlorophyll a/b ratios, and lower values for the ratio xanthophylls to carotenes ( x/c ). The photosynthetic activity of “blue light” chloroplasts (Hill reaction) is higher than that of “red light” chloroplasts. These differences in prenylquinone composition and Hill‐activity are associated with a different ultrastructure of chloroplasts. “Red light” chloroplasts exhibit a much higher grana content than “blue light” chloroplasts. The difference in thylakoid composition, photosynthetic activity and chloroplast structure found between blue and red light greening are similar to those found between sun and shade leaves and those between plants grown under high and low light intensities.