玉米精氨酸酶基因ZmArg的克隆与遗传转化

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采用基因工程技术进行作物种质创新和品种选育已经成为作物育种的重要手段。目前抗虫、抗除草剂等转基因大豆、玉米、棉花、油菜等作物已实现产业化,且面积逐年增加。关于高产转基因的研究起步虽然较晚,但国内外发展速度很快,美国孟山都公司已将高产转基因玉米新品种的选育作为研发的重要目标之一。国内高产转基因水稻进展也很迅速,已经克隆了水稻精氨酸酶等高产相关基因并进行了遗传转化,取得了较好的效果。精氨酸是植物中重要的氮素储藏物质,同时也是多胺和一氧化氮等重要信使分子的前体物质,过量表达精氨酸酶基因可以提高植物氮素利用
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