WUSCHEL controls meristem function by direct regulation of cytokinin-inducible response regulators

Andrea Leibfried, Jennifer P. C. To, Wolfgang Busch, Sandra Stehling, Andreas Kehle, Monika Demar, Joseph J. Kieber and Jan U. Lohmann ()
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Andrea Leibfried: Max Planck Institute for Developmental Biology, AG Lohmann
Jennifer P. C. To: University of North Carolina
Wolfgang Busch: Max Planck Institute for Developmental Biology, AG Lohmann
Sandra Stehling: Max Planck Institute for Developmental Biology, AG Lohmann
Andreas Kehle: Max Planck Institute for Developmental Biology, AG Lohmann
Monika Demar: Max Planck Institute for Developmental Biology, AG Lohmann
Joseph J. Kieber: University of North Carolina
Jan U. Lohmann: Max Planck Institute for Developmental Biology, AG Lohmann

Nature, 2005, vol. 438, issue 7071, 1172-1175

Abstract: Plant growth controls In plants the apical meristem at the tip of each shoot contains a population of stem cells ready to proliferate and direct plant growth when they receive the command. Comparative microarray experiments in Arabidopsis plants carrying inducible mutations of meristem regulators now show how plant hormones such as cytokinins can communicate with the meristem via a network of transcriptional activators and repressors. The homeobox protein WUSCHEL, known to control stem cell fate, has been found to act directly on a series of signalling proteins previously shown to participate in cytokinin signalling, thus providing a negative feedback loop for maintaining the size of the apical meristem.

Date: 2005
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DOI: 10.1038/nature04270

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