caa a22 4500 467893527 CHVBK 20180406152755.0 cr unu---uuuuu 170328e20060401xx s 000 0 eng 10.1007/s11103-005-4547-2 doi (NATIONALLICENCE)springer-10.1007/s11103-005-4547-2 Lateral Root Initiation or the Birth of a New Meristem [Elektronische Daten] [Ive De Smet, Steffen Vanneste, Dirk Inzé, Tom Beeckman] Root branching happens through the formation of new meristems out of a limited number of pericycle cells inside the parent root. As opposed to shoot branching, the study of lateral root formation has been complicated due to its internal nature, and a lot of questions remain unanswered. However, due to the availability of new molecular tools and more complete genomic data in the model species Arabidopsis, the probability to find new and crucial elements in the lateral root formation pathway has increased. Increasingly more data are supporting the idea that lateral root founder cells become specified in young root parts before differentiation is accomplished. Next, pericycle founder cells undergo anticlinal asymmetric, divisions followed by an organized cell division pattern resulting in the formation of a new organ. The whole process of cell cycle progression and stimulation of the molecular pathway towards lateral root initiation is triggered by the plant hormone auxin. In this review, we aim to give an overview on the developmental events taking place from the very early specification of founder cells in the pericycle until the first anticlinal divisions by combining the knowledge originating from classical physiology studies with new insights from genetic-molecular analyses. Based on the current knowledge derived from recent genetic and developmental studies, we propose here a hypothetical model for LRI. Springer, 2006 Arabidopsis nationallicence asymmetric cell division nationallicence auxin nationallicence lateral root initiation nationallicence meristem nationallicence AGP : arabinogalactan protein nationallicence CDK : cyclin dependent kinase nationallicence KRP : Kip related protein nationallicence LR : lateral root nationallicence LRI : lateral root initiation nationallicence RAM : root apical meristem nationallicence De Smet Ive Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052, Gent, Belgium aut Vanneste Steffen Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052, Gent, Belgium aut Inzé Dirk Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052, Gent, Belgium aut Beeckman Tom Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052, Gent, Belgium aut Plant Molecular Biology Kluwer Academic Publishers 60/6(2006-04-01), 871-887 0167-4412 60:6<871 2006 60 11103 https://doi.org/10.1007/s11103-005-4547-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11103-005-4547-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- De Smet Ive Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052, Gent, Belgium aut NATIONALLICENCE 700 1- Vanneste Steffen Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052, Gent, Belgium aut NATIONALLICENCE 700 1- Inzé Dirk Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052, Gent, Belgium aut NATIONALLICENCE 700 1- Beeckman Tom Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology (VIB), Ghent University, Technologiepark 927, B-9052, Gent, Belgium aut NATIONALLICENCE 773 0- Plant Molecular Biology Kluwer Academic Publishers 60/6(2006-04-01), 871-887 0167-4412 60:6<871 2006 60 11103 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer