Figure 5
Expression profile analysis of OsPTR genes. (a) Hierarchical cluster display of expression profile for 81 OsPTR genes with corresponding probes in MH63. Color key represents log2 expression values. Samples are mentioned at the bottom: S, germinating seed at 72-h of imbibitions; Se1, Seedling of 3-day after sowing; Se2, Seedling of trefoil stage; Sh, R, shoot and root of seedling with two tillers, respectively; L1, leaf at secondary branch primordium differentiation stage; L2, leaf at meiosis stage; She1, sheath at secondary branch primordium differentiation stage; She2, sheath at meiosis stage; Ste1, stem at 5-day before heading; Ste2, stem at heading stage; FL1, flag leaf at 5-day before heading; FL2, flag leaf at 14-day after flowering; P1, P2, panicle at secondary branch and pistil/stamen primordium differentiation stage, respectively; P3, panicle at pollen-mother cell formation stage; P4, panicle at meiosis stage; P5, panicle at heading stage; H, hull of one day before flowering; Sta, stamen of one day before flowering; Spi, spikelet of 3-day after flowering; E1, E2, E3, endosperm of 7-day, 14-day and 21-day after pollination, respectively. On the left, cluster dendrogram is shown. On the right, five groups are marked with different rectangles. (b) Real-time PCR results of three OsPTR genes which have no probe in MH63. X-axis represents the stages mentioned above. Y-axis represents relative expression level compared with control. Reference samples (marked with asterisk) are used to illustrate the expression pattern more clearly.