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. 2005 Feb;17(2):444–463. doi: 10.1105/tpc.104.028316

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Copyright © 2005, American Society of Plant Biologists

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Figure 9. — Comparative Analysis of Genes Differentially Regulated by Auxin in nph4-1, arf19-1, and nph4-1 arf19-1.

Differentially regulated genes in mutants among auxin-induced (A) and repressed (B) genes are shown. Each circle within the Venn diagram indicates numbers and percentages (in parentheses) of genes with repressed induction or repression levels. Only those genes with greater than twofold fold change ratio (FCR) in nph4-1, arf19-1, and nph4-1 arf19-1 were analyzed (see Methods). We defined each area of the Venn diagram from A to H, and each class was further divided into two subgroups based on their auxin-induced expression profiles in the wild type. The genes classified into class D are considered to be preferentially regulated by ARF7, and those classified into class F are considered to be preferentially regulated by ARF19. The genes classified into classes E and G are considered to be redundantly regulated by ARF7 and ARF19. The class A genes have similar expression profiles to class D genes. Likewise, class C genes have similar expression profiles to class F genes. The expression profiles of the representative genes from each class are shown in Supplemental Figure 5 online.