Fig 4. Unique and common Suillus genes that are upregulated in response to different pine hosts.

(A) Venn diagrams illustrating number of shared and unique genes for 4 Suillus species interacting with 3 Pinus hosts. Color backgrounds indicate normalized counts of upregulated host-specific transcripts (“unique genes”) identified from the individual pair combinations. Color coding is same for panels A and B. False discovery rate of 5% was used to identify unique genes with at least twofold change in expression (n = 3 for the compatible pairs and n = 2 for incompatible pairs). (B) Color-bar graph showing normalized functional categories of upregulated genes expressed during compatible and incompatible interactions (from Fig 5A). Abbreviations used for Suillus and Pinus: S. americanus (Sa), S. granulatus (Sg), and S. spraguei (Ss).P. monticola (Pm); P. strobus (Ps); P. taeda (Pt).