棉花漆酶基因在转基因新疆杨中的表达及其对木质素合成的影响

被引:46
作者
王骥
朱木兰
卫志明
机构
[1] 中国科学院上海生命科学研究院植物生理生态研究所
关键词
根癌农杆菌; 杨树; 遗传转化; 漆酶; 木质素;
D O I
暂无
中图分类号
Q943.2 [植物基因工程];
学科分类号
071007 [遗传学];
摘要
以新疆杨叶柄为外植体,利用农杆菌法将棉花漆酶基因GaLAC1导入新疆杨。PCR,Southern杂交证明外源基因已经整合到杨树基因组中。漆酶活性分析表明转基因植株中漆酶活性较非转基因对照显著提高。与对照植株相比,转基因新疆杨茎段中总木质素的含量有不同程度的增加,最高达21.5%。木质素的组织化学染色进一步证实了GaLAC1的过量表达能够导致转基因植株中总木质素含量的增加。实验结果表明GaLAC1参与了植物体内木质素的合成,这是首次成功利用转基因植物证实植物漆酶基因参与木质素合成的报道。
引用
收藏
页码:11 / 18
页数:8
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