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    • 6. 发明申请
    • Methods and Compositions for Improving the Efficiency of Site-Specific Polynucleotide Exchange
    • 提高位点特异性多核苷酸交换效率的方法和组合
    • US20070143881A1
    • 2007-06-21
    • US11427947
    • 2006-06-30
    • Dennis L. BidneySheila E. MaddockXinli E. Wu
    • Dennis L. BidneySheila E. MaddockXinli E. Wu
    • A01H1/00
    • C12N15/8213C12N15/8205C12N15/8207
    • Methods and compositions using a site-specific integration system are combined with methods and compositions which deliver compositions via microinjection directly to the embryo sac of a plant. The methods allow for various components of the site-specific recombination system to be introduced into the cellular environment of the embryo sac a composition comprising at least one component of the site-specific recombination system is injected into an embryo sac, providing improved efficiency of expression, recombination, integration, exchange, excision and/or inversion of a polynucleotide of interest. The polynucleotide of interest may be stably integrated into the genome of the egg cell, zygote, embryo, or endosperm, and tissues, plant parts, and/or plants produced therefrom. Cells, egg cells, zygotes, embryos, endosperm, tissues, seeds, and/or plants produced by the methods and comprising the polynucleotide(s) of interest are also provided.
    • 使用位点特异性整合系统的方法和组合物与通过显微注射将组合物直接递送至植物胚囊的方法和组合物组合。 所述方法允许将位点特异性重组系统的各种组分引入胚囊的细胞环境中,将包含位点特异性重组系统的至少一个组分的组合物注入胚囊,提供更好的表达效率 ,重组,整合,交换,切除和/或转化感兴趣的多核苷酸。 感兴趣的多核苷酸可以稳定地整合到卵细胞,合子,胚或胚乳以及由其产生的组织,植物部分和/或植物的基因组中。 还提供了通过方法产生并包含感兴趣的多核苷酸的细胞,卵细胞,合子,胚胎,胚乳,组织,种子和/或植物。