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    • 5. 发明授权
    • Controlled expression of transgenic constructs in plant plastids
    • 植物质体中转基因构建体的受控表达
    • US5576198A
    • 1996-11-19
    • US167638
    • 1993-12-14
    • Kevin E. McBrideDavid M. Stalker
    • Kevin E. McBrideDavid M. Stalker
    • A01H5/00C12N5/10C12N15/09C12N15/82A01H4/00
    • C12N15/8214
    • Novel compositions and methods useful for genetic engineering of plant cells to provide a method of controlling the timing or tissue pattern of expression of foreign DNA sequences inserted into the plant plastid genome are provided in the instant invention. Constructs include those for nuclear transformation which provide for expression of a viral single subunit RNA polymerase in plant cell tissues, and targeting of the expressed polymerase protein into the plant cell plastids. In addition, plastid expression constructs comprising a viral gene promoter region which is specific to the RNA polymerase expressed from the nuclear expression constructs described above, and a DNA sequence of interest to be expressed in the transformed plastid cells are provided. Plant cells and plants comprising the nuclear and/or plastid constructs described herein are of interest. Of particular interest is a method of controlling expression of the inserted plastid gene constructs in a tissue and/or developmental specific manner in plants comprising both the nuclear polymerase construct and the plastid expression constructs.
    • 在本发明中提供了可用于植物细胞遗传工程的新型组合物和方法,以提供控制插入植物质体基因组中的外来DNA序列的表达的时间或组织模式的方法。 构建体包括提供用于在植物细胞组织中表达病毒单亚基RNA聚合酶的核转化的构建体,以及将表达的聚合酶蛋白靶向植物细胞质体。 此外,提供了包含由上述核表达构建体表达的RNA聚合酶特异的病毒基因启动子区和在转化的质体细胞中表达的目标DNA序列的质体表达构建体。 包含本文所述的核和/或质体构建体的植物细胞和植物是令人感兴趣的。 特别感兴趣的是在包含核聚合酶构建体和质体表达构建体的植物中以组织和/或发育特异性方式控制插入的质体基因构建体的表达的方法。