This invention relates to a reproducible system for the production of stable, genetically transformed maize cells, and to methods of selecting cells that have been transformed. One method of selection disclosed employs the Streptomyces bar gene introduced by microprojectile bombardment into embryogenic maize cells which were grown in suspension cultures, followed by exposure to the herbicide bialaphos. The methods of achieving stable transformation disclosed herein include tissue culture methods and media, methods for the bombardment of recipient cells with the desired transforming DNA, and methods of growing fertile plants from the transformed cells. This invention also relates to the transformed cells and seeds and to the fertile plants grown from the transformed cells and to their pollen.
本发明涉及一种生产稳定的
基因转化玉米细胞的可重复系统,以及选择已转化细胞的方法。本发明公开的一种选择方法是利用微射弹轰击法将棒状链霉菌
基因导入在悬浮培养物中生长的胚胎玉米细胞,然后将其暴露于
除草剂比亚拉
磷(bialaphos)中。本发明公开的实现稳定转化的方法包括组织培养方法和
培养基、用所需转化 DNA 轰炸受体细胞的方法以及用转化
细胞培养可育植物的方法。本发明还涉及转化细胞和种子,以及由转化细胞培育出的可育植物及其花粉。