Expressed in the apical region of cotyledons 4 days after imbibition (DAI). Expressed in the whole vasculature at 12 DAI. Expressed in the root central cylinder and lateral root primordia. Expressed in the vasculature of sepals, filaments, carpels and developing siliques. May be due to intron retention. Belongs to the nucleobase:cation symporter-2 (NCS2) (TC 2.A.40) family.