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Carotenoid Synthesis in Leaves of Etiolated Wheat Seedlings after Varying Light and Dark Treatments
Author(s) -
Virgin Hemming I.
Publication year - 1967
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1967.tb07168.x
Subject(s) - neoxanthin , darkness , violaxanthin , etiolation , phytochrome , carotenoid , lutein , pigment , xanthophyll , botany , biology , chemistry , red light , zeaxanthin , biochemistry , enzyme , organic chemistry
A short impulse of red light has a varying effect on carotenoid synthesis in dark‐grown wheat seedlings. Except for β‐carotene, which remains unchanged in the dark (it increases in continuous light), the carotenoid synthesis shows the same tendency as during constant irradiation. Thus, lutein and neoxanthin slowly increases, while violaxanthin decreases. During a period of constant light following various periods of darkness after the short impulse of light, the pigment changes correspond to those occurring in the dark, but are much more pronounced. The changes are discussed on the basis of phytochrome action.