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MicroRNAs (miRNAs) are processed from primary transcripts that contain partially self-complementary foldbacks. As in animals, the core microprocessor in plants is a Dicer protein, DICER-LIKE1 (DCL1). Processing accuracy and strand selection is greatly enhanced through the RNA binding protein HYPONASTIC LEAVES 1 (HYL1) and the zinc finger protein SERRATE (SE). We have combined a luciferase-based genetic...
Unlike the situation in animals, the final morphology of the plant body is highly modulated by the environment. During Arabidopsis development, intrinsic factors provide the framework for basic patterning processes. CLASS III HOMEODOMAIN LEUCINE ZIPPER (HD‐ZIPIII) transcription factors are involved in embryo, shoot and root patterning. During vegetative growth HD‐ZIPIII proteins control several polarity...
Like protein-coding genes, loci that produce microRNAs (miRNAs) are generally considered to be under purifying selection [1–3], consistent with miRNA polymorphisms being able to cause disease [4]. Nevertheless, it has been hypothesized that variation in miRNA genes may contribute to phenotypic diversity [1, 3, 5, 6]. Here we demonstrate that a naturally occurring polymorphism in the MIR164A gene affects...
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