The Membrane-Bound NAC Transcription Factor ANAC013 Functions in Mitochondrial Retrograde Regulation of the Oxidative Stress Response in Arabidopsis

拟南芥 生物 转录因子 氧化应激 细胞生物学 线粒体 生物化学 基因 突变体
作者
Inge De Clercq,Vanessa Vermeirssen,Olivier Van Aken,Klaas Vandepoele,Monika W. Murcha,Simon R. Law,Annelies Inzé,Sophia Ng,Aneta Ivanova,Debbie Rombaut,Brigitte van de Cotte,Pinja Jaspers,Yves Van de Peer,Jaakko Kangasjärvi,James Whelan,Frank Van Breusegem
出处
期刊:The Plant Cell [Oxford University Press]
卷期号:25 (9): 3472-3490 被引量:333
标识
DOI:10.1105/tpc.113.117168
摘要

Upon disturbance of their function by stress, mitochondria can signal to the nucleus to steer the expression of responsive genes. This mitochondria-to-nucleus communication is often referred to as mitochondrial retrograde regulation (MRR). Although reactive oxygen species and calcium are likely candidate signaling molecules for MRR, the protein signaling components in plants remain largely unknown. Through meta-analysis of transcriptome data, we detected a set of genes that are common and robust targets of MRR and used them as a bait to identify its transcriptional regulators. In the upstream regions of these mitochondrial dysfunction stimulon (MDS) genes, we found a cis-regulatory element, the mitochondrial dysfunction motif (MDM), which is necessary and sufficient for gene expression under various mitochondrial perturbation conditions. Yeast one-hybrid analysis and electrophoretic mobility shift assays revealed that the transmembrane domain-containing no apical meristem/Arabidopsis transcription activation factor/cup-shaped cotyledon transcription factors (ANAC013, ANAC016, ANAC017, ANAC053, and ANAC078) bound to the MDM cis-regulatory element. We demonstrate that ANAC013 mediates MRR-induced expression of the MDS genes by direct interaction with the MDM cis-regulatory element and triggers increased oxidative stress tolerance. In conclusion, we characterized ANAC013 as a regulator of MRR upon stress in Arabidopsis thaliana.
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