TABLE 1.

Role of different metabolites induced by nitrogen stress in eukaryotes.

Targeted metabolites	Role
GABA	Regulation of energy metabolism Bypasses two steps in TCA cycle
Glutamate	Precursor of chlorophyll
Arginine	Regulation of energy metabolism
Sucrose	Promotes cell expansion and storage
Citrate	Intermediate of TCA cycle
Succinate	Intermediate between the glyoxylate cycle and TCA cycle
GTP	Regulation of energy metabolism
ATP	Regulation of energy metabolism
Glucose-6-Phosphate	Intermediate of glycolysis
NAD	Regulation of energy metabolism
NADH	Regulation of energy metabolism
NADP	Regulation of energy metabolism
NADPH	Regulation of energy metabolism