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    • 8. 发明申请
    • Method Of Excising A Nucleic Acid Sequence From A Plant Genome
    • 从植物基因组中切除核酸序列的方法
    • US20100162428A1
    • 2010-06-24
    • US12600902
    • 2008-05-30
    • Jeffrey A. BrownFang-Ming LaiChristina E. RocheHee-Sook Song
    • Jeffrey A. BrownFang-Ming LaiChristina E. RocheHee-Sook Song
    • A01H1/00A01H5/00
    • C12N15/8201C12N9/22
    • The present invention relates to a method for excising a nucleic acid sequence from the genome of a plant or a plant cell. This method is based on the steps of transforming a plant cell with a construct encoding a DNA double strand break inducing enzyme (DSBI), generating a transgenic plant line, performing a transient assay to analyze the functionality of the transgenic enzyme, crossing the plant line with a line containing a nucleic acid sequence to be excised and performing an immature embryo conversion or a tissue culture regeneration through callus formation. The method can also be reversed, which means that a plant cell is transformed with a construct encoding a nucleic acid sequence to be excised, and the crossing is performed with a plant line containing a DSBI. As an alternative to the crossing step, a re-transformation of a transgenic plant line with a second construct can also be performed. The invention is also directed to a plant obtained by this method, or progeny, propagation material, part, tissue, cell or cell culture, derived from such a plant. Finally, the invention relates to the use of a plant or progeny, propagation material, part, tissue, cell or cell culture, derived from this method, as aliment, fodder or seeds or for the production of pharmaceuticals or chemicals.
    • 本发明涉及从植物或植物细胞的基因组中切除核酸序列的方法。 该方法基于用编码DNA双链断裂诱导酶(DSBI)的构建体转化植物细胞的步骤,产生转基因植物系,进行瞬时测定以分析转基因酶的功能,穿过植物系 含有要切除的核酸序列的线,并通过愈伤组织形成进行未成熟胚转化或组织培养再生。 该方法也可以相反,这意味着用编码待切除的核酸序列的构建体转化植物细胞,并且用含有DSBI的植物系进行杂交。 作为交叉步骤的替代方案,也可以进行具有第二构建体的转基因植物系的再转化。 本发明还涉及通过该方法获得的植物,或从这种植物衍生的后代,繁殖材料,部分,组织,细胞或细胞培养物。 最后,本发明涉及来源于该方法的植物或后代,繁殖材料,部分,组织,细胞或细胞培养物作为营养物,饲料或种子或用于生产药物或化学品的用途。