从Scutellaria baicalensis中参与Baicalein生物合成的β-Glucuronidase基因的功能性表征,基于转录组分析
Xin Zuo1, Ping Li1, Guangxi Ren1
1School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China.
聚乙烯甘醇 (PEG6000) 治疗增加了Scutellaria baicalensis.的拜卡莱因含量. 研究人员确定了像GUS1和GUS2这样的β-glucuronidases (GUSs),它们对于将baicalin转化为baicalein至关重要,有助于其合成.
科学领域:
- 生物化学 生物化学
- 植物科学 植物科学
- 药理学 药理学是指药理学的学科.
背景情况:
- 贝卡莱因是来自Scutellaria baicalensis的关键药理学活性黄化合物,是从贝卡林衍生出来的.
- β-glucuronidases (GUSs) 是负责将贝卡林转化为其活性形式贝卡林的酶.
研究的目的:
- 为了研究S. baicalensis.中baicalein积累的调节.
- 为了识别和描述涉及卡林转化为卡林的GUS酶.
- 探索遗传变异对GUS酶活性和Baicalein含量的影响.
主要方法:
- 进行比较转录组分析以识别GUS基因.
- 在 prokaryotic 和 eukaryotic 系统中检测酶活性.
- 在GUS基因表达和Baicalein含量之间的相关性分析.
- 分析GUS基因中的遗传变异.
主要成果:
- 使用5%的PEG6000治疗显著增加了20.44%的拜卡莱因含量.
- 鉴定了来自甘氨酸酸酶79家族的7个GUS基因;GUS1和GUS2显示了催化活性.
- 在GUS2表达和Baicalein含量之间观察到强烈的正相关性 (0.962).
- GUS1和GUS2基因的遗传变异影响了它们的催化效率.
结论:
- GUS酶,特别是GUS1和GUS2,在S. baicalensis的Baicalein生物合成中发挥着至关重要的作用.
- 经过PEG6000治疗,可以提高白菜的产量.
- 已识别的GUS酶作为宝贵的资源,用于Baicalein的合成.
- 在GUS基因的遗传多样性影响baicalein积累模式.
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