The biogenesis of anthocyanin. VI. The role of riboflavine

Chemical Factors Affecting Anthocyanin Formation and Morphogenesis in Cultured Hypocotyl Segments of Impatiens balsamina

“…Straus has reported that 8-azaguanine caused a slight enhancement of anthocyanin formation in cultured corn endosperm tissue (9). The corn endosperm seems to approximate more nearly the condition of the meristematic tissue of segment 1 than the mature Spirodela plants used by Thimann et al (10)(11)(12)(13). The fact that 8-azaguanine acts as a potent inhibitor of anthocyanin synthesis in the mature tissues of the hypocotyl and has little effect on the meristematic area of segment 1, offers a likely explanation for the conflicting results of Straus (9) and Thimann and Radner (13).…”

“…Thimann and Radner (12) have reported that anthocyanin formation in Spirodela is directly dependent upon riboflavin synthesis. In the Impatiens hypoctoyl riboflavin was found to actually inhibit anthocyanin formation in the dark and also inhibit root and hair formation in segment 1 (table I).…”

Anthocyanin Synthesis in Corn Endosperm Tissue Cultures. I. Identity of the Pigments and General Factors.

“…Recently, Thimann and his associates (4,16,17,18,19,20) have entered upon a new approach to the problem of anthocyanin synthesis. They chose to work with the comparatively simple green aquatic plant, Spirodela oligorrhiza K., which can be easily grown under known controlled conditions.…”

“…With this plant, for example, Edmundson and Thimann (4) have been able to demonstrate the probable mediation of a copper-containing enzyme in anthocyanin synthesis. Thimann and Radner (20) have shown that riboflavine plays an important role in the production of these pigments. Siegelman and Hendricks (11) have determined the action spectrum for anthocyanin formation in seedlings of turnip and red cabbage.…”

The Influence of Light on Synthesis of Protein and of Chlorogenic Acid in Potato Tuber Tissue

“…Thimann and Radner (22) found that anthocyanin formation in Spirodella leaves is particularly sensitive to ethionine. Recently they obtained evidence for participation of a polynucleotide and suggest that protein synthesis is involved in anthocyanin pigmentation (23).…”