Figure 3.

Relative transcript abundance of pHbPIP1;1, pHbPIP2;1, and pHbTIP1;1 in the latex and inner bark of control or Ethrel-stimulated virgin trees at 24 h after bark treatment. The relative expression corresponds to the ratio of the transcript abundance of each aquaporin gene/transcript abundance of the 40S ribosomal protein endogenous control gene in the latex (A) or the inner bark tissues (B) of the PB217 clone control (0 h) mature virgin rubber trees or trees that had been treated with 2.5% Ethrel 24 h before sampling (24 h). Data are means of three independent experiments and se (n = 9). Different letters indicate values that are significantly different between the transcripts of untreated control and Ethrel-treated cDNA samples (t test; P < 0.05).