Zat10基因的功能获得性和功能丧失性突变增强了植物对非生物胁迫的耐受性。
Gain- and loss-of-function mutations in Zat10 enhance the tolerance of plants to abiotic stress.
作者信息
Mittler Ron, Kim Yongsig, Song Luhua, Coutu Jesse, Coutu Alicia, Ciftci-Yilmaz Sultan, Lee Hojoung, Stevenson Becky, Zhu Jian-Kang
机构信息
Department of Biochemistry, University of Nevada, Reno, NV 89557, USA.
出版信息
FEBS Lett. 2006 Dec 11;580(28-29):6537-42. doi: 10.1016/j.febslet.2006.11.002. Epub 2006 Nov 9.
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.
摘要
含有EAR阻遏结构域的C(2)H(2)型锌指蛋白被认为在调节植物对非生物胁迫的防御反应中起关键作用。研究发现，拟南芥中C(2)H(2)-EAR锌指蛋白Zat10的组成型表达可提高活性氧防御转录本的表达，并增强植物对盐胁迫、热胁迫和渗透胁迫的耐受性。令人惊讶的是，Zat10的敲除突变体和RNA干扰突变体对渗透胁迫和盐胁迫也更具耐受性。我们的结果表明，Zat10作为植物防御的正调控因子和负调控因子均发挥关键作用。
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