๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

An investigation into the interaction between nitrogen nutrition, photosynthesis and photorespiration

โœ Scribed by Nigel P. Hall; Remo Reggiani; Julian Franklin; Alfred J. Keys; Peter J. Lea

Publisher
Springer
Year
1984
Tongue
English
Weight
392 KB
Volume
5
Category
Article
ISSN
0166-8595

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โœฆ Synopsis

Photosynthetic CO s assimilation, photorespiration and levels of glycollate oxidase and ribulose bisphosphate (RuBP) carboxylase were measured in barley, wheat and maize plants grown on media containing nitrate or ammonium or in plants transferred from nitrate to ammonium. The COs compensation point and photorespiratory COs release were not altered by the nitrogen growth regime nor by transfer from nitrate to ammonium. In barley and wheat plants grown on ammonium the levels ofglycollate oxidase and RuBP carboxylase per unit leaf area were higher than in nitrate grown material. These differences were not evident when the results were expressed on a protein or chlorophyll basis. The ratio of glycollate oxidase activity to RuBP carboxylase activity was not altered by the nitrogen regime.

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