Callus formation from protoplasts of cultured Lithospermum erythrorhizon cells |
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Authors: | Y Maeda Y Fujita Y Yamada |
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Institution: | 1. Research Center for Cell and Tissue Culture, Faculty of Agriculture, Kyoto University, 606, Kyoto, Japan 3. Research Center, Mitsui Petrochemical Ind., Ltd., Waki-cho, Kuga-gun, 740, Yamaguchi, Japan
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Abstract: | Protoplasts isolated from cell cultures of Lithospermum erythrorhizon divided repeatedly and formed callus colonies. Factors that affect protoplast division are the use of glucose as osmoticum, a new plating method with twin layers of agar-liquid medium, and the culture of protoplasts under the osmolarity lower than that in the isolation solution. When the sucrose in the protoplast-culture medium was replaced with glucose, and coconut milk was added to the medium, the frequency of colony formation markedly increased. The culture period required for colony formation also was shortened. |
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