caa a22 4500 465806600 CHVBK 20180323112106.0 cr unu---uuuuu 170327e19900401xx s 000 0 eng 10.1007/BF03053431 doi (NATIONALLICENCE)springer-10.1007/BF03053431 Effect of L-methionine sulphoximine on the enzymes of nitrogen metabolism in barley leaves [Elektronische Daten] [P Kumar, Y Abrol] L-methionine sulphoximine, a potent inhibitor of glutamine synthetase decreased nitrate reductase activity by 50% at the end of 12h of treatment while nitrite reductase was insignificantly affected. By 3 h the inhibition of glutamine synthetase activity was complete. Elevated levels of ammonia induced by L-methionine sulphoximine did not influence glutamate dehydrogenase. It is inferred that ammonia accumulation does not affect photosynthetic electron transport which supplies reducing power to nitrite reductase. The failure of glutamate dehydrogenase activity to be induced by high ammonium levels shows that it is not involved in the process of ammonia assimilation in the leaves. Indian Academy of Sciences, 1990 Ammonia nationallicence methionine sulphoximine nationallicence nitrate reductase nationallicence nitrite reductase nationallicence glutamate dehydrogenase nationallicence barley nationallicence Kumar P. Nuclear Research Laboratory and Division of Plant Physiology, Indian Agricultural Research Institute, 110 012, New Delhi, India aut Abrol Y. Nuclear Research Laboratory and Division of Plant Physiology, Indian Agricultural Research Institute, 110 012, New Delhi, India aut Proceedings: Plant Sciences Springer India 100/2(1990-04-01), 97-100 0370-0097 100:2<97 1990 100 12388 https://doi.org/10.1007/BF03053431 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF03053431 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kumar P. Nuclear Research Laboratory and Division of Plant Physiology, Indian Agricultural Research Institute, 110 012, New Delhi, India aut NATIONALLICENCE 700 1- Abrol Y. Nuclear Research Laboratory and Division of Plant Physiology, Indian Agricultural Research Institute, 110 012, New Delhi, India aut NATIONALLICENCE 773 0- Proceedings: Plant Sciences Springer India 100/2(1990-04-01), 97-100 0370-0097 100:2<97 1990 100 12388 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer