Abstract
Differences in the production of shikonin derivatives by callus and suspension cultures of Lithospermum erythrorhizon Sieb. et Zucc. were examined. When Linsmaier and Skoog medium was used in suspension cultures, cell growth was not accompanied by the production of shikonin compounds. Shikonin derivatives were produced, however, when this medium was used in callus cultures. Differences in shikonin production were examined in terms of the nutrient supply, the effect of the agar itself, and the oxygen supply. Shikonin derivatives could be produced without agar by keeping the cells exposed to air while providing an adequate supply of nutrients. In callus cultures, the production of shikonin compounds was reduced remarkedly when the oxygen concentration in the atmosphere was lowered, evidence that shikonin production during L. erythrorhizon cell growth on Linsmaier and Skoog agar medium is enhanced by an abundant supply of oxygen.
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Hara, Y., Morimoto, T. & Fujita, Y. Production of shikonin derivatives by cell suspension cultures of Lithospermum erythrorhizon . Plant Cell Reports 6, 8–11 (1987). https://doi.org/10.1007/BF00269727
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DOI: https://doi.org/10.1007/BF00269727