MYB34; MYB51 and MYB122 act together to control the biosynthesis of indole-3-ylmethyl-GSL (I3M) in shoots and roots with MYB34 controlling biosynthesis of indolic GSLs (IGs) mainly in the roots. MYB51 regulating biosynthesis in shoots and MYB122 having an accessory role in the biosynthesis of IGs (Frerigmann & Gigolashvili 2014)