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- Title
Gain- and loss-of-function mutations in Zat10 enhance the tolerance of plants to abiotic stress
- Authors
Mittler, Ron; Kim, YongSig; Song, Luhua; Coutu, Jesse; Coutu, Alicia; Ciftci-Yilmaz, Sultan; Lee, Hojoung; Stevenson, Becky; Zhu, Jian-Kang
- Abstract
Abstract: C2H2-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 C2H2-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.
- Subjects
ARABIDOPSIS; REACTIVE oxygen species; METALLOENZYMES; SUPEROXIDES
- Publication
FEBS Letters, 2006, Vol 580, Issue 28/29, p6537
- ISSN
0014-5793
- Publication type
Article
- DOI
10.1016/j.febslet.2006.11.002