Molecular breeding of crops that highly absorb nitrogen for the purpose ofsaving energy and for the environmental protection.

以农杆菌ti质粒为载体，构建了含有水稻谷氨酰胺合成酶cDNA的转基因烟草植株。其中一种在MSmedium中生长非常迅速。用电穿孔法也获得了具有相同基因的转基因水稻植株。其中一株从水稻土中吸收了大量的氮，并且有20个茎，是对照植株的3倍多。这些数据表明，该生物技术可用于节省田间氮肥和保护环境。

Transgenic tobacco plants with the cDNA encoding rice glutamine synthetase were createdusing an Agrobacterium-Ti plasmid vector. One of them showed very rapid growth in MSmedium. Transgenic rice plants with the same gene were also created by electroporationmethod. One of 26 transformants greatly absorbed nitrogen from paddy soil, and had 20stems that were three times more than a control plant. These data indicates that thebiotechnique can be used for the purpose of saving nitrogen fertilizer in the field andfor the environmental protection.