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Curr Opin Plant Biol. 2014 Feb;17:7-12. doi: 10.1016/j.pbi.2013.10.005. Epub 2013 Nov 5.

Postembryonic control of root meristem growth and development.

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Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States.
Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN, United States. Electronic address:


Organ development in multicellular organisms is dependent on the proper balance between cell proliferation and differentiation. In the Arabidopsis root apical meristem, meristem growth is the result of cell divisions in the proximal meristem and cell differentiation in the elongation and differentiation zones. Hormones, transcription factors and small peptides underpin the molecular mechanisms governing these processes. Computer modeling has aided our understanding of the dynamic interactions involved in stem cell maintenance and meristem activity. Here we review recent advances in our understanding of postembryonic root stem cell maintenance and control of meristem size.

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