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The formation of leaf polarity is critical for leaf morphogenesis. In this study, we characterized and cloned an Arabidopsis gene, AS1/2 ENHANCER7 (AE7), which is required for both leaf adaxial–abaxial polarity formation and normal cell proliferation. The ae7 mutant exhibited leaf adaxial–abaxial polarity defects and double mutants combining ae7 with the leaf polarity mutants as1 (asymmetric leaves1...
Dof proteins are transcription factors that have a conserved single zinc finger DNA‐binding domain. In this study, we isolated an activation tagging mutant Dof5.1‐D exhibiting an upward‐curling leaf phenotype due to enhanced expression of the REV gene that is required for establishing adaxial–abaxial polarity. Dof5.1‐D plants also had reduced transcript levels for IAA6 and IAA19 genes, indicating...
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