Stage-specific markers define early steps of procambium development in Arabidopsis leaves and correlate termination of vein formation with mesophyll differentiation

Development
Enrico ScarpellaT Berleth

Abstract

During leaf development, ground meristem cells along continuous lines undergo coordinated oriented cell divisions and differentiate to form procambial cells, the precursors of all vascular cells. The molecular genetic dissection of early procambial development suffers from the lack of easily identifiable markers, especially of cell states preceding procambium formation. In this study, we have identified and characterized three reporter gene expression markers that reflect three distinct preprocambial stages, as well as one marker whose expression seems to be perfectly congruent with the appearance of procambial cells. All four markers are invariably expressed in continuous domains connected to pre-existing vasculature and their expression profiles reveal a common spatiotemporal pattern of early vein formation. We observed progressive extension of vascular strands at the preprocambial stage, suggesting that veins are initiated as freely ending preprocambial domains and that network formation occurs through subsequent fusion of these domains. Consistent with this interpretation, we demonstrate that veins are generally not programmed to become freely ending or interconnected network elements. Instead, we found that the progressive...Continue Reading

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Citations

Oct 28, 2010·Protoplasma·Juan Pablo Matte RisopatronBrian Joseph Jones
Nov 27, 2008·Proceedings of the National Academy of Sciences of the United States of America·Franck Anicet DitengouKlaus Palme
Nov 18, 2008·Proceedings of the National Academy of Sciences of the United States of America·Ryan WhitfordPierre Hilson
Dec 1, 2006·Plant & Cell Physiology·Hélène BaubyJean-Christophe Palauqui
May 11, 2010·Cold Spring Harbor Perspectives in Biology·Teva VernouxJan Traas
Feb 26, 2010·Cold Spring Harbor Perspectives in Biology·Enrico ScarpellaMiltos Tsiantis
Apr 19, 2006·Genes & Development·Enrico ScarpellaThomas Berleth
Mar 21, 2007·Plant Physiology·Jalean Joyanne Petricka, Timothy Mark Nelson
Jun 7, 2006·Proceedings of the National Academy of Sciences of the United States of America·Pavel Dimitrov, Steven W Zucker
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Jul 2, 2010·Annual Review of Cell and Developmental Biology·Ana Caño-DelgadoTaku Demura
Feb 11, 2009·Genes & Development·Emmanuelle M BayerCris Kuhlemeier
Feb 26, 2016·Journal of Experimental Botany·Andrea Bräutigam, Udo Gowik
Jun 7, 2012·Bio Systems·Marc R Roussel, Martin J Slingerland
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Feb 27, 2013·The Plant Journal : for Cell and Molecular Biology·Neeru GandotraTimothy Nelson
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May 4, 2012·Physiologia Plantarum·Robertas UrsacheYkä Helariutta

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