FIGURE 6.

Plasmodiophora brassicae-dependent SWEET gene expressions in the root of Chinese cabbage. Hierarchical clustering and heatmap representation show time course responses of SWEET gene expressions in the root of Chinese cabbage after P. brassicae infection. The expression levels of genes are presented using fold-change values transformed to Log2 format. The data obtained by quantitative RT-PCR correspond to the levels of SWEETs in total RNA samples extracted from roots before and after infection of P. brassicae. The data indicate the relative expression levels normalized to that of the internal control Actin or 18srRNA. Gray color means no signal detected,while red and green colors correspond to up- and down-regulations of the SWEET gene expressions, respectively.