Research article - Peer-reviewed, 2003
Isolation of COV1, a gene involved in the regulation of vascular patterning in the stem of Arabidopsis
Parker G, Schofield R, Sundberg B, Turner SAbstract
The molecular mechanisms that control the ordered patterning of vascular tissue development in plants are not well understood. Several models propose a two-component system for vascular differentiation. These components include an inducer of vascular tissue development and an inhibitor that prevents the formation of vascular bundles near pre-existing bundles. We have identified two recessive allelic mutants in Arabidopsis, designated continuous vascular ring (cov1), that display a dramatic increase in vascular tissue development in the stem in place of the interfascicular region that normally separates the vascular bundles. The mutant plants exhibited relatively normal vascular patterning in leaves and cotyledons. Analysis of the interaction of cov1 with a known auxin signalling mutant and direct analysis of auxin concentrations suggests that cov1 affects vascular pattering by some mechanism that is independent of auxin. The COV1 protein is predicted to be an integral membrane protein of unknown function, highly conserved between plants and bacteria. In plants, COV1 is likely to be involved in a mechanism that negatively regulates the differentiation of vascular tissue in the stemKeywords
Arabidopsis; differentiation; vascular bundle; patterning; auxinPublished in
Development2003, volume: 130, number: 10, pages: 2139-2148
Publisher: COMPANY OF BIOLOGISTS LTD
Authors' information
Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Parker, Garry
Schofield, Rebecca
Turner, Simon
UKÄ Subject classification
Forest Science
Publication Identifiers
DOI: https://doi.org/10.1242/dev.00441
URI (permanent link to this page)
https://res.slu.se/id/publ/1181