Fig. 4
Assessment of enzyme activities and carbonitride content. (a) NRA. (b) GSA. (c) GOGAT. (d) SSA. (e) SPS activity. (f) Rubisco activity. (g) NO3-N content. (h) NH4-N content. (i) Soluble protein content. (j) Total sugar content. (k) Reducing sugar content. Error bars indicate the standard error of the mean (n = 3 individuals per treatment group). Small letters indicate significant differences between treatments at p < 0.05, respectively