Gain- and Loss-of-function Mutations in Zat10 Enhance the Tolerance of Plants to Abiotic Stress

Overview

Journal FEBS Lett

Specialty Biochemistry

Date 2006 Nov 23

PMID 17112521

Citations 201

Authors

Ron Mittler

Yongsig Kim

Luhua Song

Jesse Coutu

Alicia Coutu

Sultan Ciftci-Yilmaz

Hojoung Lee

Becky Stevenson

Jian-Kang Zhu

Affiliations

Soon will be listed here.

Abstract

C(2)H(2)-zinc finger proteins that contain the EAR repressor domain are thought to play a key role in modulating the defense response of plants to abiotic stress. Constitutive expression of the C(2)H(2)-EAR zinc finger protein Zat10 in Arabidopsis was found to elevate the expression of reactive oxygen-defense transcripts and to enhance the tolerance of plants to salinity, heat and osmotic stress. Surprisingly, knockout and RNAi mutants of Zat10 were also more tolerant to osmotic and salinity stress. Our results suggest that Zat10 plays a key role as both a positive and a negative regulator of plant defenses.

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