Free amino acids and ammonia in the Azolla-Anabaena association grown with N2, NH4+, and NO3

The level and localization of free amino acids and ammonia in the Azolla-Anabaena association grown with N 2 , NH 4 + , and NO 3 ¯ were compared. In the leaves, the levels of ammonia and most of the amino acids except for aspartic acid and glutamic acid decreased in the dark and increased in the lig...

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