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    • 16. 发明授权
    • Methods and compositions for regulating cell death and enhancing disease resistance to plant pathogens
    • 用于调节细胞死亡并增强对植物病原体的抗病性的方法和组合物
    • US06455297B1
    • 2002-09-24
    • US09923654
    • 2001-08-07
    • Gurmukh S. JohalSteven P. BriggsJohn GrayGongshe Hu
    • Gurmukh S. JohalSteven P. BriggsJohn GrayGongshe Hu
    • C12N988
    • C12N15/8261C12N9/88C12N15/8242C12N15/8243C12N15/8263C12N15/8282C12N15/8289Y02A40/146
    • Compositions and methods for enhancing disease resistance to a pathogen in a plant are provided. Methods of the invention comprise stably transforming a plant with an antisense nucleotide sequence for a gene encoding an enzyme in the C-5 porphyrin metabolic pathway and operably linking said antisense sequence to a pathogen-inducible promoter, such that invasion of a cell by a pathogen elicits a hypersensitive-like response that results in confinement of the pathogen to cells of initial contact. Transformed plants and seeds are provided. Nucleotide sequences encoding a wild-type maize urod gene useful in the present invention and the amino acid sequence for the protein encoded thereby are provided. These compositions are also useful for regulating cell death in specifically targeted tissues. A maize lesion mimic, dominant mutant phenotype, designated Les22, and the molecular basis for its manifestation are also provided.
    • 提供了用于提高植物中对病原体的抗病性的组合物和方法。 本发明的方法包括用编码C-5卟啉代谢途径中的酶的基因的反义核苷酸序列稳定转化植物,并将所述反义序列可操作地连接到病原体诱导型启动子,使得病原体侵入细胞 引起过敏反应,导致病原体与初始接触细胞的限制。 提供了转化的植物和种子。 提供了编码本发明中有用的野生型玉米urod基因的核苷酸序列和由此编码的蛋白质的氨基酸序列。 这些组合物也可用于调节特异性靶向组织中的细胞死亡。 还提供了玉米病变模拟物,显性突变体表型,命名为Les22,以及其表现的分子基础。