Abstract
Gynura bicolor DC., a traditional vegetable in Japan, is cultivated as Kinjisou and Suizenjina in Ishikawa and Kumamoto prefectures, respectively. The adaxial side of the leaves of G. bicolor grown in a field is green, and the abaxial side is reddish purple. It has been reported that these reddish purple pigments are anthocyanins. Although we established a culture system of G. bicolor, the leaves of G. bicolor plants grown under our culture conditions showed green color on both sides of all leaves. We investigated the effects of phytohormones and chemical treatments on anthocyanin accumulation in cultured plants. Although anthocyanin accumulation in the leaves was slightly stimulated, anthocyanins accumulation in the roots of the cultured plant was induced remarkably by 25–50 μM methyl jasmonate (MJ) treatment. This induction was affected by light irradiation and sucrose concentration in the culture medium. However, salicylic acid (SA) and 1-aminocyclopropane-1-carboxylic acid did not induce anthocyanin accumulation in roots. And then, combinations of MJ and SA or MJ and AgNO3 did not stimulate the anthocyanin accumulation in the root as found in the case of treatment by MJ solely.
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Shimizu, Y., Maeda, K., Kato, M. et al. Methyl jasmonate induces anthocyanin accumulation in Gynura bicolor cultured roots. In Vitro Cell.Dev.Biol.-Plant 46, 460–465 (2010). https://doi.org/10.1007/s11627-010-9294-7
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DOI: https://doi.org/10.1007/s11627-010-9294-7