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Annals of Botany 74: 193-204, 1994
© 1994 Annals of Botany Company

Genetic and Structural Analysis of Five Arabidopsis Mutants with Abnormal Root Morphology Generated by the Seed Transformation Method

David R. Holding, Robert J. McKenzie and Shirley A. Coomber

Division of Life Sciences, King's College, University of London, Campden Hill Road, London W8 7AH, UK

A number of Arabidopsis thaliana mutants with abnormal root morphology have been isolated from a population of Agrobacterium -mediated seed transformants. Five of these mutants identified by their abnormal root morphology have been genetically and morphologically characterised. Two mutants, 5905 and 1767 have defective cellular elongation, mutant 7203 lacks an endodermal cell layer and mutants 4792 and 7133 exhibit abnormal radial cellular expansion. It is apparent from detailed analysis that abnormal root morphology is accompanied by abnormal hypocotyl phenotype. Genetic analysis has revealed that only one of these mutants is tagged with a T-DNA insert.Copyright 1994, 1999 Academic Press

Arabidopsis thaliana, root, development, T-DNA insertion mutagenesis, endodermis, elongation


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