METHODS OF REGENERATION AND TRANSFORMATION OF STEVIA PLANT AND TRANSGENIC STEVIA PLANTS HAVING ENHANCED STEVIOL GLYCOSIDES CONTENT

    公开(公告)号:US20210123066A1

    公开(公告)日:2021-04-29

    申请号:US16963133

    申请日:2019-01-17

    Abstract: The present invention relates to a method for Agrobacterium-mediated transformation and regeneration of Stevia plants. In particular, the method involves co-culturing leaf explants with Agrobacterium in a medium comprising acetosyringone and 2,4-dichlorophenoxyacetic acid in the dark, callus induction and shoot regeneration in a medium comprising 6-benzylaminopurine, 3-indoleacetic acid, a selective agent and an Agrobacterium eradicant in the dark, and root regeneration in a medium comprising 3-indoleacetic acid in a light/dark cycle. The present invention also relates to the overexpression of SrDXS1 and SrKAH in transgenic plants, resulting in the enhancement of steviol glycosides in the transgenic plants. The present invention further relates to the overexpression SrUGT76G1 in transgenic plants, resulting in higher Rebaudioside A (Reb A) to stevioside ratios in the transgenic plants.

    METHOD FOR ISOLATING SMALL MOLECULES WITH IMPORTANT BIOLOGICAL ACTIVITY USING YEAST
    8.
    发明申请
    METHOD FOR ISOLATING SMALL MOLECULES WITH IMPORTANT BIOLOGICAL ACTIVITY USING YEAST 审中-公开
    使用YEAST分离具有重要生物活性的小分子的方法

    公开(公告)号:US20130225515A1

    公开(公告)日:2013-08-29

    申请号:US13762925

    申请日:2013-02-08

    CPC classification number: A61K31/7048 C07K1/16 C07K14/37

    Abstract: Methods of isolating biologically active molecules from an organism, for example from a fungus, are described. The methods involve isolating an active molecule which possesses a specific biological activity on, in or against wild-type yeast cells, but not on, in or against yeast cells that express a given ABC transporter from a given organism, including but not limited to Magnaporthe species such as Magnaporthe grisea. In preferred embodiments, the biological activity is antifungal activity. In most preferred embodiments, the antifungal activity is against a human pathogen, including but not limited to Candida albicans. The biologically active molecules can be formulated as pharmaceutical compositions and used to treat fungal infections in a subject, including a human subject.

    Abstract translation: 描述了从生物体(例如真菌)分离生物活性分子的方法。 所述方法包括分离在野生型酵母细胞中或对抗野生型酵母细胞但不包括表达来自给定生物体的给定ABC转运蛋白的酵母细胞中或之上具有特定生物活性的活性分子,包括但不限于Magnaporthe 物种如Magnaporthe grisea。 在优选的实施方案中,生物活性是抗真菌活性。 在最优选的实施方案中,抗真菌活性是针对人类病原体,包括但不限于白色念珠菌。 生物活性分子可以配制成药物组合物并用于治疗受试者(包括人类受试者)中的真菌感染。

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