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    • 9. 发明公开
    • REDUCTION OF NICOTINE TO NORNICOTINE CONVERSION IN PLANTS
    • PFLANZEN VON NIKOTINFÜRDIE NORNICOTINUMWANDLUNG
    • EP3140404A1
    • 2017-03-15
    • EP15726007.6
    • 2015-05-07
    • Philip Morris Products S.A.
    • LIEDSCHULTE, VerenaGOEPFERT, SimonBOVET, LucienSIERRO, Nicolas
    • C12N15/82C12N9/02A01H5/00
    • C12N15/8243C12N9/0073C12N15/8218C12Q1/6895C12Q2600/13C12Q2600/156C12Y114/13
    • The present invention relates to a mutant, non-naturally occurring or transgenic tobacco plant cell comprising: (i) a polynucleotide comprising, consisting or consisting essentially of a sequence encoding a functional nicotine N-demethylase and having at least 95% sequence identity to SEQ ID NO:2; (ii) a polypeptide encoded by the polynucleotide set forth in (i); (iii) a polypeptide comprising, consisting or consisting essentially of a sequence encoding a nicotine N-demethylase and having at least 95% sequence identity to SEQ ID NO:3; or (iv) a construct, vector or expression vector comprising the isolated polynucleotide set forth in (i), and wherein the expression or activity of said nicotine demethylase is reduced as compared to a control tobacco plant cell in which the expression or activity of said nicotine demethylase has not been reduced.
    • 本发明涉及一种突变体,非天然存在或转基因烟草植物细胞,其包含:(i)多核苷酸,其包含,组成或者基本上由编码功能性尼古丁N-脱甲基酶的序列组成,并且与SEQ ID不得少于95%的序列同一性 编号:2; (ii)由(i)所述的多核苷酸编码的多肽; (iii)一种多肽,其包含由编码尼古丁N-脱甲基酶并与SEQ ID NO:3具有至少95%序列同一性的序列组成或由其组成; 或者(iv)包含(i)所述的分离的多核苷酸的构建体,载体或表达载体,并且其中所述尼古丁脱甲基酶的表达或活性与所述烟碱脱甲基酶的表达或活性相比降低, 尼古丁脱甲基酶尚未减少。