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Studies on Orobanche hederae Physiology: Pigments and CO 2 Fixation
Author(s) -
Baccarini A.,
Melandri B. A.
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.tb07159.x
Subject(s) - neoxanthin , xanthophyll , pigment , botany , carotenoid , lutein , chlorophyll , biology , biochemistry , chemistry , zeaxanthin , organic chemistry
In order to investigate some aspects of Orobanche hederae physiology in relation to its parasitism, the pigment composition and the 14 CO 2 incorporation, both in light and in dark, were studied. By means of various chromatographic techniques, it was shown that chlorophyll is probably quite absent and that the carotenoids are very largely distrihuted and consist almost exclusively of xanthophylls. Flavochrome, flavoxanthin, and a pigment resembling neoxanthin were found to be the major components; lutein‐5,6‐epoxide, taraxanthin, and traces of β‐carotene and α‐carotene‐5,6‐epoxide were also present. CO 2 incorporation is completely of heterotrophic type, being in no way stimulated by the light; the major radioactivity was detected in the fractions containing amino acids and organic acids.