Nature Communications 2: Article number: 326 (2011); Published: 24 May 2011; Updated 22 May 2012.

In Fig. 2 of this article, the directions of the arrows associated with 6OMT and CNMT were inadvertently changed during the production process. The correct version of the figure appears below:

Figure 2
figure 1

Proposed plant biosynthetic pathway and genes involved in the biosynthesis of BIAs from L-tyrosine to (S)-reticuline.