华北农学报 ›› 2006, Vol. 21 ›› Issue (4): 9-12. doi: 10.3321/j.issn:1000-7091.2006.04.003

所属专题: 油料作物 生物技术

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花生Δ;12-脂肪酸去饱和酶基因RNAi表达载体的构建

陈占宽1, 张新友2, 苗利娟1, 黄冰艳1, 汤丰收2, 张忠信2   

  1. 1. 河南省农业科学院生物技术研究所河南省农作物新品种重点实验室, 河南郑州 450002;
    2. 河南省农业科学院棉花油料作物研究所, 河南郑州 450002
  • 收稿日期:2006-01-12 出版日期:2006-08-28
  • 通讯作者: 张新友
  • 作者简介:陈占宽(1946- ),男,河南南乐人,副研究员,主要从事植物基因工程研究工作。
  • 基金资助:
    国家转基因专项(JY04-B-01)

RNAi Plasmid Construction of Delta-12-fatty Acid Desaturase Gene from Peanut

CHEN Zhan-kuan1, ZHANG Xin-you2, MIAO Li-juan1, HUANG Bing-yan1, TANG Feng-shou2, ZHANG Zhong-xin2   

  1. 1. Biotechnology Research Institute, Henan Academy of Agricultural Sciences, Henan Key Laboratory for Crop Improvement, Zhengzhou 450002, China;
    2. Cotton and Oil Crops Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
  • Received:2006-01-12 Published:2006-08-28

摘要: 利用RNAi原理构建花生Δ;12-脂肪酸去饱和酶基因的hpRNA表达载体,以抑制该基因的表达,获得高油酸/亚油酸比值的花生种质。根据花生Δ;12-脂肪酸去饱和酶基因序列(GenBank:AF248739)设计引物,以豫花4号花生品种DNA为模板,克隆了该基因的启动子及长度约500 bp的外显子片段,在此基础上构建完成由自身启动子引导的花生Δ;12-脂肪酸去饱和酶基因的反向重复片段RNAi载体pCAMBIA1301-Afad12Ri。

关键词: 花生, &Delta, 12-脂肪酸去饱和酶, RNA干扰, 发夹RNA, 载体构建

Abstract: An RNAi plasmid is constructed to inhibit the expression of delta-12-fatty desaturase gene in peanut,in order to down regulate the biosynthesis of linoleic acid and obtain transgenic lines with high oleic acid /linoleic acid ratio.The primers were designed based on the sequence of delta-12-fatty desaturase gene released in GenBank(AF248739),and the promoter region and partial extron of the gene in peanut was cloned using the genomic DNA from peanut cultivar Yuhua 4 as template.An RNAi plasmid pCAMBIA1301-Afad12Ri was constructed which contains the cloned promoter and inverted repeats of delta-12-fatty desaturase gene fragment.

Key words: Peanut (Arachis hypogaes), Delta-12-fatty desaturase gene, RNAi, hpRNA, Plasmid construction

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引用本文

陈占宽, 张新友, 苗利娟, 黄冰艳, 汤丰收, 张忠信. 花生Δ;12-脂肪酸去饱和酶基因RNAi表达载体的构建[J]. 华北农学报, 2006, 21(4): 9-12. doi: 10.3321/j.issn:1000-7091.2006.04.003.

CHEN Zhan-kuan, ZHANG Xin-you, MIAO Li-juan, HUANG Bing-yan, TANG Feng-shou, ZHANG Zhong-xin. RNAi Plasmid Construction of Delta-12-fatty Acid Desaturase Gene from Peanut[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(4): 9-12. doi: 10.3321/j.issn:1000-7091.2006.04.003.

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