Phyllotactic pattern and stem cell fate are determined by the Arabidopsis homeobox gene BELLRINGER

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)

[img]
Preview
PDF (Paper)
Martienssen Development 2003.pdf - Published Version
Available under License Creative Commons Attribution Non-commercial Share Alike.

Download (462Kb) | Preview
URL: http://www.ncbi.nlm.nih.gov/pubmed/12874117
DOI: 10.1242/Dev.00620

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: http://repository.cshl.edu/id/eprint/27960

Actions (login required)

Administrator's edit/view item Administrator's edit/view item
CSHL HomeAbout CSHLResearchEducationNews & FeaturesCampus & Public EventsCareersGiving