Byrne, M. E., Groover, A. T., Fontana, J. R., Martienssen, R. A. (September 2003) Phyllotactic pattern and stem cell fate are determined by the Arabidopsis homeobox gene BELLRINGER. Development, 130 (17). pp. 3941-50. ISSN 0950-1991 (Print)0950-1991 (Linking)
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Abstract
Lateral organs in plants arise from the meristem in a stereotypical pattern known as phyllotaxy. Spiral patterns result from initiation of successive organs at a fixed angle of divergence but variable patterns of physical contact. Such patterns ultimately give rise to individual leaves and flowers at positions related to each other by consecutive terms in the mathematical series first described by Leonardo Fibonacci. We demonstrate that a BELL1 related homeodomain protein in Arabidopsis, BELLRINGER, maintains the spiral phyllotactic pattern. In the absence of BELLRINGER, the regular pattern of organ initiation is disturbed and lateral organs are initiated more frequently. BELLRINGER is also required for maintenance of stem cell fate in the absence of the regulatory genes SHOOT MERISTEMLESS and ASYMMETRIC LEAVES1. We propose a model whereby BELLRINGER coordinates the maintenance of stem cells with differentiation of daughter cells in stem cell lineages.
| Item Type: | Paper |
|---|---|
| Uncontrolled Keywords: | Arabidopsis embryology Body Patterning physiology Genes Homeobox Meristem genetics physiology Plant Shoots anatomy & histology growth & development Stem Cells physiology bellringer brevipedicellus shoot meristemiless asymmetric leaves shoot apical meristem plant homeodomain proteins inflorescence architecture fibonaccis flowers leaf development knotted class wild-type thaliana maize knox |
| Subjects: | organism description > plant > Arabidopsis organism description > plant organs, tissues, organelles, cell types and functions > cell types and functions > cell types > stem cells organs, tissues, organelles, cell types and functions > cell types and functions > cell types > stem cells organs, tissues, organelles, cell types and functions > cell types and functions > cell types > stem cells |
| CSHL Authors: | |
| Communities: | CSHL labs > Martienssen lab |
| Depositing User: | Matt Covey |
| Date: | September 2003 |
| Date Deposited: | 11 Jun 2013 18:54 |
| Last Modified: | 11 Jun 2013 18:54 |
| Related URLs: | |
| URI: | https://repository.cshl.edu/id/eprint/27960 |
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