Journal article

Induction of differentiation in the shoot apical meristem by transient overexpression of a retinoblastoma-related protein

  • Wyrzykowska, Joanna Institute of Plant Sciences, Swiss Federal Institute of Technology Zürich, Switzerland
  • Schorderet, Martine Department of Biology-Plant Biology, University of Fribourg, Switzerland
  • Pien, Stéphane Institute of Plant Sciences, Swiss Federal Institute of Technology Zürich, Switzerland - Department of Plant Biology, University of Zürich, Switzerland
  • Gruissem, Wilhelm Institute of Plant Sciences, Swiss Federal Institute of Technology Zürich, Switzerland
  • Fleming, Andrew J. Institute of Plant Sciences, Swiss Federal Institute of Technology Zürich, Switzerland - Department of Animal and Plant Sciences, University of Sheffield, United Kingdom
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    30.06.2006
Published in:
  • Plant Physiology. - 2006, vol. 141, no. 4, p. 1338-1348
English The shoot apical meristem contains cells that undergo continual growth and division to generate the building blocks for the aerial portion of the plant. As cells leave the meristem, they undergo differentiation to form specific cell types. Most notably, heterotrophic cells of the meristem rapidly gain autotrophic capability by synthesis and assembly of components of the chloroplast. At the same time, cells undergo enlargement via vacuolation. Despite significant advances in the characterization of transcriptional networks involved in meristem maintenance and leaf determination, our understanding of the actual mechanism of meristem cell differentiation remains very limited. Using a microinduction technique, we show that local, transient overexpression of a retinoblastoma-related (RBR) protein in the shoot apical meristem is sufficient to trigger cells in the meristem to undergo the initial stages of differentiation. Taken together with recent data showing that RBR protein plays a key role in restricting stem cell differentiation in the root apical meristem, our data contribute to an emerging picture of RBR proteins as a central part of the mechanism controlling meristem cell differentiation.
Faculty
Faculté des sciences et de médecine
Department
Département de Biologie
Language
  • English
Classification
Biology
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/300209
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