An Auxin-Dependent Distal Organizer of Pattern and Polarity in the Arabidopsis Root

Autor: Dimitris Beis, Harald Wolkenfelt, Sabrina Sabatini, Philip N. Benfey, Ben Scheres, Nicole Bechtold, Peter Weisbeek, Tom J. Guilfoyle, Jane Murfett, Jocelyn E. Malamy, Ottoline Leyser
Přispěvatelé: Molecular Genetics, Universiteit Utrecht, Dep Biologie, Unité de recherche Génétique et amélioration des plantes (GAP), Institut National de la Recherche Agronomique (INRA), ProdInra, Migration
Rok vydání: 1999
Předmět:
Auxin influx
Auxin efflux
Cell biology
Molecular biology
Arabidopsis
[SDV.BC]Life Sciences [q-bio]/Cellular Biology
Cell Communication
Biology
Models
Biological
Plant Roots
General Biochemistry
Genetics and Molecular Biology
Auxin
Genes
Reporter
Botany
Genetics
Morphogenesis
heterocyclic compounds
PIN proteins
[SDV.BC] Life Sciences [q-bio]/Cellular Biology
Plant Proteins
chemistry.chemical_classification
Indoleacetic Acids
Arabidopsis Proteins
Biochemistry
Genetics and Molecular Biology(all)
fungi
Root meristem growth
food and beverages
Cell Polarity
Gene Expression Regulation
Developmental
Membrane Transport Proteins
Biological Transport
Meristem maintenance
Life sciences
DNA-Binding Proteins
chemistry
International
Polar auxin transport
Carrier Proteins
Basipetal auxin transport
Transcription Factors
Zdroj: Scopus-Elsevier
Cell
Cell, Elsevier, 1999, 99 (24), pp.463-472
ISSN: 0092-8674
1097-4172
DOI: 10.1016/s0092-8674(00)81535-4
Popis: Root formation in plants involves the continuous interpretation of positional cues. Physiological studies have linked root formation to auxins. An auxin response element displays a maximum in the Arabidopsis root and we investigate its developmental significance. Auxin response mutants reduce the maximum or its perception, and interfere with distal root patterning. Polar auxin transport mutants affect its localization and distal pattern. Polar auxin transport inhibitors cause dramatic relocalization of the maximum, and associated changes in pattern and polarity. Auxin application and laser ablations correlate root pattern with a maximum adjacent to the vascular bundle. Our data indicate that an auxin maximum at a vascular boundary establishes a distal organizer in the root.
Databáze: OpenAIRE
Externí odkaz: