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    • 6. 发明申请
    • NOVEL TARGETS FOR HERBICIDES AND TRANSGENIC PLANTS RESISTANT TO SAID HERBICIDES
    • 用于除草剂和抗转基因植物的新靶标抗除草剂
    • WO0246441A2
    • 2002-06-13
    • PCT/FR0103832
    • 2001-12-05
    • AVENTIS CROPSCIENCE SAMATRINGE MICHELRIPPERT PASCAL
    • MATRINGE MICHELRIPPERT PASCAL
    • C07K14/415C12N1/19C12N1/21C12N9/02C12N9/10C12N15/53C12N15/55C12N15/82
    • C12N9/001C07K14/415C12N9/1096C12N15/8274C12Y103/01012C12Y103/01013Y02P20/582
    • The invention concerns novel enzymes having an arogenate dehydrogenase activity, in particular arogenate dehydrogenase enzymes of plants, and the genes encoding said enzymes. The inventive arogenate dehydrogenase enzymes catalyze the last stage of the metabolic pathway of tyrosine biosynthesis, and constitute, as such, potential targets of herbicides. Hence the invention also concerns a method for identifying herbicide compounds targeting said enzymes, said herbicide compounds preventing tyrosine biosynthesis by being fixed on said enzymes. The invention further concerns transgenic plants tolerant to herbicide compounds targeting an enzyme involved in the tyrosine biosynthesis pathway, in particular an enzyme involved in the transformation of L-tyrosine prephenate, in particular an arogenate dehydrogenase enzyme. Said plants become tolerant by expression in their tissues of a prephenate dehydrogenase enzyme, said enzyme being insensitive to said herbicide compounds and enabling the plant to synthetize tyrosine despite being treated with said herbicide compounds.
    • 本发明涉及具有雄激素脱氢酶活性的新型酶,特别是植物的氢化脱氢酶,以及编码所述酶的基因。 本发明的雄激素脱氢酶催化酪氨酸生物合成的代谢途径的最后阶段,并且构成除草剂的潜在靶标。 因此,本发明还涉及用于鉴定靶向所述酶的除草剂化合物的方法,所述除草剂化合物通过固定在所述酶上来预防酪氨酸生物合成。 本发明还涉及对涉及酪氨酸生物合成途径的酶的除草剂化合物具有耐受性的转基因植物,特别是涉及转化L-酪氨酸预苯酸酯,特别是雄激素脱氢酶的酶。 所述植物通过在其预组酸脱氢酶的组织中表达而变得耐受,所述酶对所述除草剂化合物不敏感,并且能够使植物合成酪氨酸,尽管用所述除草剂化合物进行处理。