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Control of inflorescence architecture in Antirrhinum

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Abstract

Flowering plants exhibit two types of inflorescence architecture: determinate and indeterminate. The centroradialis mutation causes the normally indeterminate inflorescence of Antirrhinum to terminate in a flower. We show that centroradialis is expressed in the inflorescence apex a few days after floral induction, and interacts with the floral-meristem-identity gene floricaula to regulate flower position and morphology. The protein CEN is similar to animal proteins that associate with lipids and GTP-binding proteins. We propose a model for how different inflorescence structures may arise through the action and evolution of centroradialis.

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Author notes

  1. Steven Rothstein

    Present address: Department of Molecular Biology and Genetics, University of Guelph, Guelph, Ontario, N1G 2W1, Canada

Authors and Affiliations

  1. Genetics Department, John Innes Centre, Colney Lane, Norwich, NR4 7UH, UK

    Desmond Bradley, Rosemary Carpenter, Lucy Copsey, Coral Vincent, Steven Rothstein & Enrico Coen

Authors
  1. Desmond Bradley
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  2. Rosemary Carpenter
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  3. Lucy Copsey
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  4. Coral Vincent
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  5. Steven Rothstein
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  6. Enrico Coen
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Bradley, D., Carpenter, R., Copsey, L. et al. Control of inflorescence architecture in Antirrhinum. Nature 379, 791–797 (1996). https://doi.org/10.1038/379791a0

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  • DOI: https://doi.org/10.1038/379791a0

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