DEUs found in the haustorial region of C. campestris growing in the AHS, and comparison with upregulated unigenes reported in other haustoria developmental conditions. Left: Volcano plot showing the distribution of upregulated and downregulated DEUs (20,749 DEU, P-adj < 0.05) found in the haustorial region of C. campestris growing in the AHS. The red line corresponds to a P-adj of 0.01. Colors of data points correspond to those of the Venn diagram at right. Right: Venn diagram showing the intersection of DEUs reported for three categories of haustoria developmental conditions. First category includes upregulated and downregulated unigenes in functional haustorial regions of parasites growing in AHS (18,565 DEU with P-adj < 0.01 were included). The second category corresponds to up regulated unigenes in immature haustorial tissue, 87 h after induction of haustoria triggered by contact with a host leaf (Kaga et al., 2020). The third category includes upregulated unigenes expressed in functional haustorial regions of C. campestris growing on plant hosts (Kim et al., 2014; Ranjan et al., 2014).