In vascular plants, almost all above-ground organs are derived from the shoot apical meristem (SAM). The developmental role of the SAM has been extensively studied,especially in the model dicot plant Arabidopsis thaliana(Aichinger et al., 2012).
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National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant Sciences Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 China;
