DRE2 is involved in auxin response.
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(A) Biological processes associated with downregulated genes in dre2-4. (B) Relative expression levels of CIA pathway genes after 10 μM IAA treatment. The expression level of MET18 at 0 h was set as 1. Data are presented as mean ± SD of four technical replicates. (C) Primary and lateral root phenotypes of 9-day-old Col-0, dre2-3, dre2-4 and met18-2 without or with the application of 10 μM IAA. (D) Statistical analysis of primary root length (upper) and lateral root numbers (lower) of Col-0, dre2-3, dre2-4 and met18-2 seedlings. Mean ± SD, n ≥ 20; Asterisks indicate two-tailed Student’s t-test, *P < 0.05, **P < 0.01.