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    • 5. 发明申请
    • Process for producing a decaffeinated coffee plant by genetic recombination
    • 通过遗传重组生产脱咖啡因咖啡植物的方法
    • US20080127373A1
    • 2008-05-29
    • US10521244
    • 2005-01-14
    • Shinjiro OgitaHiroshi SanoNozomu KoizumiAtsuhiko Shinmyo
    • Shinjiro OgitaHiroshi SanoNozomu KoizumiAtsuhiko Shinmyo
    • A01H5/00
    • C12N15/8243A01H5/00C12N9/1007
    • The invention provides a process for producing a decaffeinated coffee plant by genetic recombination comprising a step for preparing an antisense sequence or an RNAi sequence of a gene coding for an enzyme related to the caffeine biosynthetic pathway and constructing an expression vector for transformation, a step for introducing the obtained expression vector into Agrobacterium, a step for infecting a cell division-activated tissue piece of a coffee plant or a callus or an adventitious embryo induced from a tissue piece of a coffee plant with the Agrobacterium to transform the tissue piece, the callus or the adventitious embryo and a step for obtaining an transformed coffee plant from a transformed tissue piece, a transformed callus or a transformed adventitious embryo so that a coffee plant with low caffeine content can be produced by suppressing expression of a gene coding for an enzyme related to the caffeine biosynthetic pathway by the antisense method or the RNAi method.
    • 本发明提供了一种通过遗传重组生产脱咖啡因咖啡植物的方法,包括制备编码与咖啡因生物合成途径相关的酶的基因的反义序列或RNAi序列的步骤,并构建用于转化的表达载体的步骤 将获得的表达载体导入农杆菌中,用于感染咖啡植物或愈伤组织的细胞分裂激活的组织片或由土壤杆菌从咖啡植物的组织块诱导的不定胚以转化组织块,愈伤组织 或不定胚,以及从转化的组织片,转化愈伤组织或转化的不定胚获得转化的咖啡植物的步骤,从而可以通过抑制编码相关酶的基因的表达来产生咖啡因含量低的咖啡植物 通过反义方法或RNAi方法转化为咖啡因生物合成途径。