Lictfeld und Blattfarbstoffe. II

Seybold, A.; Egle, K.

doi:10.1007/bf01909240

Cited by 70 publications

(6 citation statements)

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“…Early work indicated that on illumination some etiolated seedlings synthesized xanthophylls more rapidly than carotenes, while others synthesized carotene more rapidly (82,207). However, it has recently been shown that when etiolated seedlings of a strain of maize (single cross L 289 X 205) are illuminated for three days a four-fold increase in @-carotene levels occurred, while the xanthophyll fractions remained unchanged (146).…”

Section: Lightmentioning

confidence: 99%

“…The plastid carotenoids so produced are the expected mixture of @carotene and xanthophylls (Table IV) and they occur in the usual ratio; the levels of the extraplastidic carotenoids, almost entirely xanthophylls, remain unaltered on illumination. Wigh light intensities reduce carotenogenesis in leaves (206), algae (255), and photosynthetic bacteria (44). Complete exclusion of light has no effect on the carotenoid levels of Chlorella vulgaris growing heterotrophically (86), but in Euglena gracilis v. bacillaris under the same conditions the levels are only one-fifth of those observed in the light (108).…”

Section: Lightmentioning

confidence: 99%

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The Biosynthesis and Function of the Carotenoid Pigments

Goodwin¹

1959

Advances in Enzymology - And Related Areas of Molecular Biology

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Section: Lightmentioning

confidence: 99%

Section: Lightmentioning

confidence: 99%

The Biosynthesis and Function of the Carotenoid Pigments

Goodwin¹

1959

Advances in Enzymology - And Related Areas of Molecular Biology

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“…Earlier, Strain (6) had suggested that the carotenoids are involved in chlorophyll formation based on the reports that the spectral bands which are most effective in chlorophyll formation are relatively ineffective in carotenoid formation (7) since a temporary depression of carotenoids but a steady increase of chlorophyll had been noted in the leaves of Phaseolus multiflorus on prolonged light exposure (7,8).…”

mentioning

confidence: 99%

The Relationship Between Chlorophyll and the Carotenoids in the Algal Flagellate, Euglena

Wolken

Mellon

1956

The Journal of General Physiology

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Research for the "precursor" of chlorophyll in higher plants stimulated us to search for the "precursor" in Protista using similar techniques. Recently we have obtained an action spectrum for chlorophyll formation in Euglena (1). The action spectrum corresponds with the action spectrum for "greening" in etiolated Arena seedlings as determined by Frank (2) and with the absorption spectrum for protochlorophyll as given by Noack and Kiessling (3 a, b) and Koski and Smith (4). Studies by Smith (5) and Koski and Smith (4) indicate that protochlorophyll is the chlorophyll precursor as indicated in the action spectrum given by Frank (2).While the chlorophyll and carotenoid densities were being followed during this work, a decrease in carotenoid density was observed at high light intensities. Earlier, Strain (6) had suggested that the carotenoids are involved in chlorophyll formation based on the reports that the spectral bands which are most effective in chlorophyll formation are relatively ineffective in carotenoid formation (7) since a temporary depression of carotenoids but a steady increase of chlorophyll had been noted in the leaves of Phaseolus multiflorus on prolonged light exposure (7,8).Granick has reported a significant decrease in carotenoid density as Mg vinyl pheoporphyrin is transformed to chlorophyll in a mutant of Chlordla (9). A similar decrease in carotenoid density in oat seedlings has been observed at high light intensities and it has been suggested that the substance responsible for the carotenoid decrease is a prophyrin-type compound concerued with "esterifying" the porphyrin molecule and converting Mg vinyl pheoporphyrin to protochlorophyll, its phytol ester (10).In the present paper, an improved action spectrum is presented and, in addition, data on carotenoid formation and "destruction" are given. Also,

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“…3 Present address: National Institute of Health, Bethesda. Maryland. grown seedlings, but under certain conditions light will accelerate the synthesis of these yellow plastid pigments (4,5,6,7,8). The destructive reactions of the carotenoids have also been studied in detail, and are considered to be both enzymatic and photochemical in nature (9).…”

mentioning

confidence: 99%