Rapid synthesis of glutamine during the initial period of ammonia assimilation in roots of barley plants

After 1 hr of ammonia assimilation in barley plants, glutaminecontent in the roots increased 20 fold its original content,whereas contents of glutamic and aspartic acid decreased toa remarkable extent. These findings indicate a rapid synthesisof glutamine during the initial period of ammonia assimilationin roots. Results also suggest that glutamine synthesis fromglutamic acid initially occurring in the roots, is a primaryreaction of ammonia assimilation (Received May 11, 1971; )