Fig. 9.

Polar auxin transport of inflorescence stems in ABC transporter mutants. Average polar auxin transport in mutant stems in the ABCB subfamily was reduced, while ABCG subfamily mutants were similar to wild type. For this analysis, two to five independent experiments were repeated, resulting in 8–43 stems examined. White stars indicate that the differences between the mutant and wild type were considered significant (P<0.05) using Student's t-test. Error bars represent the standard error of percentages obtained in different replicate experiments.