Figure 2

Venn diagrams illustrating numbers of transcripts up- or down-regulated by water-stress in the three comparisons. C1 refers to the region 1 comparison, C2 to the region 2 comparison, and C2/3 to the comparison of region 2 of water-stressed roots with region 3 of well-watered roots. All but two transcripts are accounted for in this figure; the other two were up-regulated in one region but down-regulated in another. The three comparisons did not share many of the same differentially expressed transcripts, indicating large differences in the response to water stress between the regions.