Fig. 4: Natural selection on rice genes.
From: SMRT sequencing of the Oryza rufipogon genome reveals the genomic basis of rice adaptation
a Branch-specific ω values of RUF, SAT, and NIV estimated by using PAML. b Number of PSGs identified in RUF, SAT, and NIV lineage. c Functional enrichment of flower development and biotic stimulus response-related PSGs compared with whole gene set. d Genome-wide distribution of PSGs. The outer ring represents the 12 rice chromosomes; the four circles from the perimeter to the center separately refer to the dN, dS, PSGs, and dN/dS distribution for the 2053 1:1 orthologous genes. The 18 genes functionally associated with ripening (green triangles), flower development (red triangles) and reproduction (blue triangles) are marked. Black points in the inner circles show the dN/dS ratios < 0.5, while green points indicate 0.5 ≤ dN/dS < 0.8, and red points present dN/dS ≥ 0.8.
