Figure 3.

Fold change to expression values in comparison with control treatment of genes involved in N and P metabolism. *Significant difference in expression value (RPKM) from control treatment at P<0.05. (a) Genes involved in phosphorus transport and metabolism; (b) genes involved in urea transport and metabolism; (c) genes involved in nitrate transport and metabolism. Black bars represent expression fold change of N-reduced (urea) treatment, dark gray bars represent N-reduced (ammonium) treatment, light gray bars represent N-reduced (nitrate) treatment and white bars represent P-reduced treatment.