摘要
用水母雪莲（ＳａｕｓｕｒｅａｍｅｄｕｓａＭａｘｉｍ．）的茎和叶片作外植体，在ＭＳ附加０．５ｍｇ／ＬＢＡ、２ｍｇ／ＬＮＡＡ的培养基上诱导愈伤组织，并研究了不同培养基、植物激素、培养温度以及苯丙氨酸对固体培养细胞生长和黄酮形成的影响。结果表明：ＭＳ培养基附加２ｍｇ／ＬＮＡＡ，在２５℃利于细胞生长；苯丙氨酸对细胞生长未见有促进作用，但有利于细胞中黄酮的形成。用目视法直接挑选两种不同次生代谢能力的细胞系：浅黄色系（Ａ系）和红色系（Ｂ系）。用快速灵敏的紫外分光光度和高效液相法，测得离体培养细胞Ａ系中总黄酮的含量为１．９％，ｊａｃｅｏｓｉｄｉｎ的含量为０．４２％，分别是Ｂ系中的２．３倍和３．９倍，是原愈伤组织中的２．６倍和４．２倍。
Explants of stems and leaves of Saussurea medusa Maxim. were cultured on MS medium supplemented with 0.5 mg/L BA, 2 mg/L NAA, and from which factors, such as the media, plant hormones and culture temperature, as well as the addition of phenylalanine to the medium, that affect the callus growth, were investigated. The results showed that cells grew appropriately in MS medium supplemented with 2 mg/L NAA at 25 ℃. Phenylalanine was not suitable for cell growth in solid culture but it increased flavonoid production. The calli could be distinguished by colour with naked eyes into two cell lines, a faint yellow (A) and a red coloured (B), representing respectively the different colour of metabolite accumulations. A sensitive and rapid highperformance liquid chromatographic as well as a UV spectrophotometric method have been developed for detecting the flavonoids in cultured cells. It revealed that the A line contained 1.9% flavonoids and 0.42% jaceosidin, which was 2.5 times and 3.9 times more than B line; 2.6 and 4.2 times more than the initial callus cells respectively.
基金
国家自然科学基金
关键词
水母雪莲
细胞固体培养
黄酮高产细胞系
Saussurea medusa, Cell solid culture, High flavonoidsproducing cell lines
