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    • 6. 发明授权
    • Tolerance of trichothecene mycotoxins in plants and animals through the
modification of the peptidyl transferase gene
    • 通过修饰肽基转移酶基因,在植物和动物中耐受单端孢霉真菌毒素
    • US6060646A
    • 2000-05-09
    • US909828
    • 1997-08-12
    • Linda HarrisSteve Gleddie
    • Linda HarrisSteve Gleddie
    • C07K14/415C12N15/29C12N15/65C12N15/82A01H1/00A01H5/00C07H21/04C12N15/00
    • C12N15/8209C07K14/415C12N15/65C12N15/8242C12N15/8274C12N15/8282A01K2217/05
    • Fusarium graminearum is a plant pathogen, attacking a wide range of plant species including corn (ear and stalk rot), barley, and wheat (head blight). Fusarium epidemics result in millions of dollars of loses in crop revenues. Fusarium graminearum infection in the cereals reduces both grain yield and quality. Mycotoxins are produced by many fungal Fusarium species and thus the grain becomes contaminated with these mycotoxins, such as the trichothecenes. The major trichothecene produced by F. graminearum is deoxynivalenol (abbreviated as DON, also known as vomitoxin). Trichothecenes are potent protein synthesis inhibitors and are quite toxic to humans and livestock. A yeast gene has been identified which is resistant to the trichothecene, trichodermin. A corresponding plant gene has been prepared, which has been used to transform plants and would be suitable to transform animals. These transformed plants have an increased resistance to Fusarium infestation. Potentially, transformed animals could have an increased tolerance to the trichothecene mycotoxins.
    • 禾谷镰刀菌是一种植物病原体,攻击种类繁多的植物物种,包括玉米(耳朵和茎腐烂),大麦和小麦(头枯病)。 镰刀菌流行导致作物收入损失数百万美元。 禾谷镰刀菌感染谷物减少谷物产量和质量。 真菌毒素是由许多真菌镰孢属物种产生的,因此谷物被这些霉菌毒素如单链孢霉素污染。 由禾谷镰孢菌产生的主要单端孢霉烯是脱氧雪腐镰刀菌烯醇(简称DON,又称呕吐毒素)。 Trichothecenes是有力的蛋白质合成抑制剂,对人类和家畜有很大的毒性。 已经鉴定出对单端孢霉烯(trichodhecene),trichodermin(耐药性)有抗性的酵母基因。 已经制备了相应的植物基因,其已被用于转化植物并且适于转化动物。 这些转化的植物对镰刀菌侵袭的抗性增加。 潜在地,转化的动物可能具有增加对单端孢霉真菌毒素的耐受性。