CDKN1A and hyperinsulinemic hypoglycemia, familial, 4: Importantly, the expressions of NRT2;4 and AMT1;1, induced in the root during nitrogen deficiency, and of SDI1 and SULTR1;1, induced in the root during sulphur deficiency (Howarth et al., 2009; Hubberten et al., 2012), are not affected by PSN11 (Fig. S4a,b).