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    • 30. 发明授权
    • Method of plant selection using glucosamine-6-phosphate deaminase
    • 使用葡糖胺-6-磷酸脱氨酶的植物选择方法
    • US06444878B1
    • 2002-09-03
    • US09367293
    • 1999-12-23
    • Iain A. DonaldsonKirsten BojsenKirsten JorgensenMorten Jorsboe
    • Iain A. DonaldsonKirsten BojsenKirsten JorgensenMorten Jorsboe
    • C12N1582
    • C12N15/8241C12N9/90C12N15/8209
    • A selection method for selecting from a population of plant cells one or more genetically transformed plant cells is described. In the method, the population of plant cells includes selectable genetically transformed plant cells and possible non-transformed plant cells. Each of the selectable genetically transformed plant cells comprises a first expressible nucleotide sequence and optionally a second expressible nucleotide sequence. In the method, a component or a metabolic derivative thereof when present in a low concentration in a medium is a nutrient for both the selectable genetically transformed plant cells and the non-transformed plant cells. In the method, the component or the metabolic derivative thereof when present in a high concentration in a medium is toxic to the non-transformed plant cells. The first nucleotide sequence codes for a gene product having glucosamine-6-phosphate deaminase activity which is capable of converting the component or the metabolic derivative thereof when present in a high concentration in a medium to a nutrient for the selectable genetically transformed plant cells. The method includes the step of introducing the population of plant cells to a medium, wherein the medium includes a high concentration of the component or the metabolic derivative thereof. In the method, the component or the metabolic derivative thereof is a source of both carbohydrate and nitrogen for the selectable genetically transformed plant cells.
    • 描述了从植物细胞群体中选择一个或多个遗传转化的植物细胞的选择方法。 在该方法中,植物细胞群体包括选择性遗传转化的植物细胞和可能的未转化植物细胞。 每个可选择的经遗传转化的植物细胞包含第一可表达核苷酸序列和任选的第二可表达核苷酸序列。 在该方法中,当在培养基中以低浓度存在时,其组分或代谢衍生物是可选择的遗传转化的植物细胞和未转化的植物细胞的营养物。 在该方法中,当在培养基中以高浓度存在时,组分或其代谢衍生物对未转化的植物细胞是有毒的。 第一核苷酸序列编码具有葡糖胺-6-磷酸脱氨酶活性的基因产物,其能够在培养基中以高浓度存在时将组分或其代谢衍生物转化为可选择的遗传转化植物细胞的营养物。 该方法包括将植物细胞群引入培养基的步骤,其中培养基包含高浓度的组分或其代谢衍生物。 在该方法中,组分或其代谢衍生物是用于可选遗传转化的植物细胞的碳水化合物和氮源。