Figure 1From: Protocol: High-throughput and quantitative assays of auxin and auxin precursors from minute tissue samplesA simplified summary of IAA biosynthetic pathways. A solid line represents an enzymatic step. Dashed lines suggest multiple steps or pathways abbreviated. TAA1: Trp aminotransferase of Arabidopsis. YUCCA: an Arabidopsis flavin monooxygenase [3, 11].Back to article page