Figure 4.

Iron uptake mechanisms are induced in co-culture. (A) Genes predicted to be involved in iron uptake and that are upregulated in co-culture at t2 and/or t6. The numbers of the genes depicted in the figure are the corresponding MXAN_ identifiers. (B) Graphical representation of the cluster of genes involved in myxochelin biosynthesis. The seven upregulated transcripts are indicated by their corresponding gene name. (C) Fur box (FB) predicted by using the Virtual Footprint database. Red balls: Fe³⁺; blue balls: Fe²⁺. OM, outer membrane; IM, inner membrane. For more details please see the text and Supplementary Table S2A.