Factors Affecting Agrobacterium-Mediated Transformation Efficiency in Rice

被引:6
|
作者
CHEN En-hui
Lixiahe Area Academy of Agricultural Sciences of Jiangsu Province
机构
关键词
rice; Agrobacterium; callus; hormones; transformation;
D O I
暂无
中图分类号
S511 [稻];
学科分类号
0901 ;
摘要
Several important factors affecting the efficiency of Agrobacterium-mediated rice transformation were studied with several predominant commercial indica and japonica rice cultivars. As far as indica rice callus was concerned, CC medium was the best and the quality of callus was improved with the addition of 1.0 to 2.0 mg/L ABA. It decreased the percentage of browning calli and improved the callus growing state by addition of a certain amount of sorbitol to the subculture medium. NB medium was the best for callus initiation of japonica rice, but the improvement in the quality of callus of japonica subspecies was not obvious by adding ABA. During the period of subculture, to a certain degree, increasing the sucrose concentration could improve the proportion of hygromycin resistant calli. Furthermore, the transformation efficiency would be higher by applying selection pressure in the selection stage, removing selection pressure during the plantlet differentiation period and applying selection pressure again during seedling hardening period. Besides, suitable combination of plant hormones was beneficial for callus differentiation. An efficient /Agrobacterium-mediated rice transformation system had been established for several rice cultivars and a lot of transgenic rice plants had been obtained.
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收藏
页码:181 / 185
页数:5
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