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Chitinase gene mediated by Ri plasmid transfering wheat
Author(s): 
Pages: 297-301
Year: Issue:  3
Journal: BULLETIN OF BOTANICAL RESEARCH

Keyword:  小麦几丁质酶基因Ri质粒转基因植株;
Abstract: 采用L9(34)的正交试验,以带有pMLH7133-Chi质粒的发根农杆菌为介导,对栽培品种春小麦东农7742、龙麦9814和Hite的幼胚愈伤组织进行了遗传转化研究.结果表明:基因型为东农7742、菌液浓度OD600=0.8、共培养时间2 d、乙酰丁香酮(As)浓度为100 μm是最佳的试验组合;各影响因素的主次顺序是:基因型>乙酰丁香酮的浓度>菌液浓度>共培养时间.共获得138株Hyg抗性植株,经PCR及PCR-Southern检测初步证明,外源几丁质酶基因已整合到其中5株的基因组中,又对3株阳性植株进行了RT-PCR扩增和几丁质酶活力测定,证明外源几丁质酶基因已在小麦基因组中稳定表达.
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