Partial loss-of-function alleles reveal a role for GNOM in auxin transport-related, post-embryonic development of Arabidopsis.

Details

Serval ID
serval:BIB_E3806CD5CE4D
Type
Article: article from journal or magazin.
Collection
Publications
Title
Partial loss-of-function alleles reveal a role for GNOM in auxin transport-related, post-embryonic development of Arabidopsis.
Journal
Development (cambridge, England)
Author(s)
Geldner N., Richter S., Vieten A., Marquardt S., Torres-Ruiz R.A., Mayer U., Jürgens G.
ISSN
0950-1991 (Print)
ISSN-L
0950-1991
Publication state
Published
Issued date
2004
Volume
131
Number
2
Pages
389-400
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
The Arabidopsis GNOM gene encodes an ARF GDP/GTP exchange factor involved in embryonic axis formation and polar localisation of the auxin efflux regulator PIN1. To examine whether GNOM also plays a role in post-embryonic development and to clarify its involvement in auxin transport, we have characterised newly isolated weak gnom alleles as well as trans-heterozygotes of complementing strong alleles. These genotypes form a phenotypic series of GNOM activity in post-embryonic development, with auxin-related defects, especially in the maintenance of primary root meristem activity and in the initiation and organisation of lateral root primordia. Our results suggest a model for GNOM action mediating auxin transport in both embryogenesis and post-embryonic organ development.
Keywords
Alleles, Arabidopsis/genetics, Arabidopsis/growth & development, Arabidopsis Proteins/genetics, Arabidopsis Proteins/metabolism, Biological Transport, Active, Gene Expression Regulation, Developmental, Gene Expression Regulation, Plant, Genes, Plant, Gravitropism/genetics, Guanine Nucleotide Exchange Factors, Indoleacetic Acids/metabolism, Meristem/growth & development, Models, Biological, Mutation, Phenotype, Plant Growth Regulators/genetics, Plant Growth Regulators/metabolism, Plant Roots/growth & development
Pubmed
Web of science
Open Access
Yes
Create date
09/03/2008 19:19
Last modification date
20/08/2019 17:07
Usage data