With TG-866(Brevibacterium Tianjin) as original strain,a L-Glutamine producing strain GMS-44(MSO r ?(NH 4) 2SO 4 r ?SG r) was mutated by using DES mutational method. In optimal conditions,the mutant accumulates an average of 27.0 g/L of glutamine.

• 以TG - 86 6 (BrevibacteriumTianjin)为出发菌株 ,利用硫酸二乙酯 (DES)诱变 ,定向选育出一株谷氨酰胺生产菌GMS - 44(MSOr、(NH4 ) 2 SO4 r、SGr) ,在适宜的条件下平均积累谷氨酰胺 2 7 0 g/L。