Fig. 4From: PEPC of sugarcane regulated glutathione S-transferase and altered carbon–nitrogen metabolism under different N source concentrations in Oryza sativaDetermination of enzyme activity. a Enzyme activity of GST and GOGAT. b Enzyme activity of PDH, PEPC and ME. c Enzyme activity of CS, α-KGDH and ICDHc. d Enzyme activity of HK, PFK and PK. (*P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001)Back to article page