Figure 9From: Genomic survey, characterization and expression profile analysis of the peptide transporter family in rice (Oryza sativa L.)Expression divergence of paralogous OsPTR genes involved in duplication. X-axis indicates representative samples and Y-axis is scales of expression level. (a) Just formed due to duplication. (b) Nonfunctionalization. (c) Subfunctionalization. (d) Neofunctionalization.Back to article page