The Arabidopsis mutant iop1 exhibits induced over‐expression of the plant defensin gene PDF1.2 and enhanced pathogen resistance
- 26 September 2003
- journal article
- Published by Wiley in Molecular Plant Pathology
- Vol. 4 (6) , 479-486
- https://doi.org/10.1046/j.1364-3703.2003.00193.x
Abstract
SUMMARY Jasmonate and ethylene are concomitantly involved in the induction of the Arabidopsis plant defensin gene PDF1.2. To define genes in the signal transduction pathway leading to the induction of PDF1.2, we screened for mutants with induced over-expression of a beta-glucuronidase reporter, under the control of the PDF1.2 promoter. One mutant, iop1 (induced over-expressor of PDF1.2) produced small plants that showed induced over-expression of the pathogenesis-related genes PR-3, PR-4 and PR-1,2 (PDF1.2), combined with a down-regulated induction of PR-1 upon pathogen inoculation. The iop1 mutant showed enhanced resistance to a number of necrotrophic pathogens.Keywords
This publication has 34 references indexed in Scilit:
- The Arabidopsis Mutant cev1 Links Cell Wall Signaling to Jasmonate and Ethylene ResponsesPlant Cell, 2002
- Characterization of a Novel, Defense-Related Arabidopsis Mutant, cir1, Isolated By Luciferase ImagingMolecular Plant-Microbe Interactions®, 2002
- Esa1, an Arabidopsis mutant with enhanced susceptibility to a range of necrotrophic fungal pathogens, shows a distorted induction of defense responses by reactive oxygen generating compoundsThe Plant Journal, 2002
- Isolation and characterization of signal transduction mutants of Arabidopsis thaliana that constitutively activate the octadecanoid pathway and form necrotic microlesionsThe Plant Journal, 2001
- Requirement of FunctionalEthylene-Insensitive 2Gene for Efficient Resistance of Arabidopsis to Infection byBotrytis cinereaPlant Physiology, 1999
- The cpr5 Mutant of Arabidopsis Expresses Both NPR1-Dependent and NPR1-Independent ResistancePlant Cell, 1997
- Pathogen-Induced Systemic Activation of a Plant Defensin Gene in Arabidopsis Follows a Salicylic Acid-Independent PathwayPlant Cell, 1996
- Arabidopsis Mutants Selected for Resistance to the Phytotoxin Coronatine Are Male Sterile, Insensitive to Methyl Jasmonate, and Resistant to a Bacterial PathogenPlant Cell, 1994
- Programmed cell death in plants: A pathogen-triggered response activated coordinately with multiple defense functionsCell, 1994
- CTR1, a negative regulator of the ethylene response pathway in arabidopsis, encodes a member of the Raf family of protein kinasesCell, 1993