Figure 6.

Effect of exogenous Put treatment on the xth31 mutant with decreased hemicellulose content. Phenotypes of the plants (A), root soluble Fe content (B), shoot soluble Fe content (C), FCR activity (D), and the expression of genes related to Fe uptake (E, F, G). Six-week-old wild type and xth31 were placed in +Fe or -Fe medium with or without 0.1 mm Put for 7 d. Expression levels in the +Fe-treated sample for each gene were set to 100%, and levels in the tested sample were calculated relative to the corresponding control value. Error bars represent ± sd (n = 4). Different letters represent significant difference at P < 0.05.