转果聚糖蔗糖转移酶基因银腺杨的获得(英文)

被引:15
作者
张冰玉
苏晓华
黄秦军
张香华
胡赞民
机构
[1] 中国林业科学研究院林业研究所国家林业局林木培育实验室
[2] 中国科学院遗传发育生物学研究所 北京
[3] 北京
关键词
银腺杨; 果聚糖蔗糖转移酶基因; 转基因; 农杆菌介导;
D O I
暂无
中图分类号
S792.11 [杨];
学科分类号
0829 ; 0907 ;
摘要
采用农杆菌介导的遗传转化方法,将来自枯草杆菌的果聚糖蔗糖转移酶基因(SacB)导入银腺杨,以提高杨树对水分胁迫的抗性。以来自无菌培养的叶片为外植体,通过大约10 0 0个叶盘与农杆菌LBA4 4 0 4共培养,将植物双元表达载体pKP中SacB基因导入银腺杨基因组,经卡那霉素筛选后,共获得10 2株卡那霉素抗性植株。经PCR特异性扩增和Southern点杂交分析,证明其中97株再生植株基因组DNA中整合了SacB基因。对其中的6 2个无性系进行RT PCR分析,结果表明SacB基因在其中的5 0个无性系中获得表达。温室生长观察表明,转基因无性系外部形态与对照相比没有稳定的显著差异,少数部分转基因无性系的生长明显受到抑制,其他转基因无性系生长正常。这些转基因无性系的获得为培育抗旱转基因杨树奠定了基础。
引用
收藏
页码:48 / 53
页数:6
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