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园艺学报 ›› 2001, Vol. 28 ›› Issue (1): 74-76.

• 研究报告 • 上一篇    下一篇

大白菜AB-81高频再生系统的建立及gus A基因瞬时表达的研究

王火旭1;王关林1;王晓岩2;方宏筠1;贾士荣3;唐益雄3;魏毓棠4   

  1. (1 辽宁师范大学生物工程研究所, 大连116029; 2 大连市种子公司, 大连116033; 3 中国农业科学院生物技术中心, 北京100081; 4 沈阳农业大学园艺系, 沈阳110161)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2001-02-25 发布日期:2001-02-25

Establishment of Efficient Shoot Regeneration System of Chinese Cabbage (Brassica campestris ssp. pekinensis) Inbred Line‘AB-81’and Studies of Transient Expression of gus A Gene

Wang Huoxu1, Wang Guanlin1, Wang Xiaoyan2, Fang Hongjun1, Jia Shirong3, Tang Yixiong3, and Wei Yutang4   

  1. (1 Bioengineering Institute of Liaoning Normal University, Dalian 116029;2 Dalian seed company, Dalian 116033;3Biotechnology center of the Chinese Agriculture Academy of Science, Beijing 100081;4 Department of Horticulture, Shenyang Agricultural University, Shenyang 110161)
  • Received:1900-01-01 Revised:1900-01-01 Online:2001-02-25 Published:2001-02-25

摘要: 以大白菜自交系AB-81 的子叶和真叶切块为外植体, 建立了高频不定芽离体再生系统。在MS 附加TDZ 0. 2 mg/L , NAA 2. 0 mg/L , AgNO3 10 mg/L 和ABA 0. 25 mg/L 的再生培养基上, 子叶和真叶的不定芽再生频率分别达到93. 3%和90. 0%, 每块外植体的不定芽数达3~6 个, 最多达21 个。以EHA105/ pMOG410 为载体转化侵染大白菜AB-81 的子叶, 获得较高gus A 基因瞬时表达频率的条件为: 子叶预培养2~3 d ; 侵染的工程菌液的浓度OD 0. 3~0. 5 ; 侵染时间2~10 min ; 共培养时间2~3 d。

关键词: 大白菜, 子叶, 真叶, 再生, gus A 基因

Abstract: An efficient shoot regeneration systemwas established using cotyledon and leave cuts of the inbred line‘AB-81’as explants. On the MS medium supplemented with 10 mg/L AgNO3 , 0. 2 mg/L TDZ, 2 mg/L NAA and 0.25mg/L ABA , the regeneration frequency of the cotyledon and leave explants was up to 93. 3% and 90% respectively. The mean number and the most number of shoots per explant was 3 - 6 and 21 respectively. Cotyledons of AB281 were inoculated with Agrobacterium tumefaciens strain EHA105 containing pMOG410 carrying gus A-intron gene. The optimum conditions for the transient expression of gus A gene were as follows : preculture time of 2 - 3 days , bacterium density of OD 0. 3 - 0.5 , infection time of 2 - 10 min , and coculture time of 2 - 3 days.

Key words: Chinese cabbage 〔Brassica campestris L. ssp. pekinensis (Lour) Olsson〕, Cotyledons, Leaves, Regeneration, Gus A gene

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