Stem-Cell Homeostasis and Growth Dynamics Can Be Uncoupled in the Arabidopsis Shoot Apex
- 28 October 2005
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 310 (5748) , 663-667
- https://doi.org/10.1126/science.1116261
Abstract
The shoot apical meristem (SAM) is a collection of stem cells that resides at the tip of each shoot and provides the cells of the shoot. It is divided into functional regions. The central zone (CZ) at the tip of the meristem is the domain of expression of the CLAVATA3 (CLV3) gene, encoding a putative ligand for a transmembrane receptor kinase, CLAVATA1, active in cells of the rib meristem (RM), located just below the CZ. We show here that CLV3 restricts its own domain of expression (the CZ) by preventing differentiation of peripheral zone cells (PZ), which surround the CZ, into CZ cells and restricts overall SAM size by a separate, long-range effect on cell division rate.Keywords
This publication has 14 references indexed in Scilit:
- New pOp/LhG4 vectors for stringent glucocorticoid‐dependent transgene expression in ArabidopsisThe Plant Journal, 2005
- Real-time lineage analysis reveals oriented cell divisions associated with morphogenesis at the shoot apex ofArabidopsis thalianaDevelopment, 2004
- Dependence of Stem Cell Fate in Arabidopsis on a Feedback Loop Regulated by CLV3 ActivityScience, 2000
- Specific and heritable genetic interference by double-stranded RNA in Arabidopsis thalianaProceedings of the National Academy of Sciences, 2000
- The Stem Cell Population of Arabidopsis Shoot Meristems Is Maintained by a Regulatory Loop between the CLAVATA and WUSCHEL GenesPublished by Elsevier ,2000
- Signaling of Cell Fate Decisions by CLAVATA3 in Arabidopsis Shoot MeristemsScience, 1999
- Role of WUSCHEL in Regulating Stem Cell Fate in the Arabidopsis Shoot MeristemCell, 1998
- Cellular Parameters of the Shoot Apical Meristem in ArabidopsisPlant Cell, 1998
- The CLAVATA1Gene Encodes a Putative Receptor Kinase That Controls Shoot and Floral Meristem Size in ArabidopsisCell, 1997
- Genetic Control of Cell Division Patterns in Developing PlantsPublished by Elsevier ,1997