The Arabidopsis mutant cev 1 has constitutively active jasmonate and ethylene signal pathways and enhanced resistance to pathogens

Ellis, Christine and Turner, John G. (2001) The Arabidopsis mutant cev 1 has constitutively active jasmonate and ethylene signal pathways and enhanced resistance to pathogens. Plant Cell, 13 (5). pp. 1025-1033. ISSN 1532-298X

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Abstract

Jasmonates (JAs) inhibit plant growth and induce plant defense responses. To define genes in the Arabidopsis JA signal pathway, we screened for mutants with constitutive expression of a luciferase reporter for the JA-responsive promoter from the vegetative storage protein gene VSP1. One mutant, named constitutive expression of VSP1 (cev1), produced plants that were smaller than wild type, had stunted roots with long root hairs, accumulated anthocyanin, had constitutive expression of the defense-related genes VSP1, VSP2, Thi2.1, PDF1.2, and CHI-B, and had enhanced resistance to powdery mildew diseases. Genetic evidence indicated that the cev1 phenotype required both COI1, an essential component of the JA signal pathway, and ETR1, which encodes the ethylene receptor. We conclude that cev1 stimulates both the JA and the ethylene signal pathways and that CEV1 regulates an early step in an Arabidopsis defense pathway.

Item Type: Article
Faculty \ School: Faculty of Science > School of Biological Sciences
Depositing User: EPrints Services
Date Deposited: 01 Oct 2010 13:36
Last Modified: 15 Dec 2022 01:48
URI: https://ueaeprints.uea.ac.uk/id/eprint/83
DOI: 10.1105/tpc.13.5.1025

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