A hub for ABA signaling to the nucleus: Significance of a cytosolic and nuclear dual-localized PPR protein SOAR1 acting downstream of Mg-chelatase H subunit

SOAR1 is a cytosol-nucleus dual-localized pentatricopeptide repeat (PPR) protein, which we indentified recently as a crucial regulator in the CHLH/ABAR (Mg-chelatase H subunit /putative ABA receptor)-mediated signaling pathway, acting downstream of CHLH/ABAR and upstream of a nuclear ABA-responsive...

Full description

Saved in:
Bibliographic Details
Published in:Plant signaling & behavior 2014-11, Vol.9 (11), p.e972899-e972899
Main Authors: Jiang, Shang-Chuan, Mei, Chao, Wang, Xiao-Fang, Zhang, Da-Peng
Format: Article
Language:English
Subjects:
ABA receptor
ABA signaling
abscisic acid
Abscisic Acid - metabolism
Arabidopsis - metabolism
Arabidopsis Proteins - metabolism
Cell Nucleus - metabolism
Cytosol - metabolism
cytosol-nucleus dual-localization
gene expression
gene expression regulation
genes
Lyases - metabolism
magnesium chelatase
Mg-chelatase H subunit
pentatricopeptide repeat (PPR) protein
Protein Subunits - metabolism
Protein Transport
Short Communication
Signal Transduction
transcription factors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:SOAR1 is a cytosol-nucleus dual-localized pentatricopeptide repeat (PPR) protein, which we indentified recently as a crucial regulator in the CHLH/ABAR (Mg-chelatase H subunit /putative ABA receptor)-mediated signaling pathway, acting downstream of CHLH/ABAR and upstream of a nuclear ABA-responsive bZIP transcription factor ABI5. Downregulation and upregulation of SOAR1 expression alter dramatically both ABA sensitivity and expression of a subset of key, nuclear ABA-responsive genes, suggesting that SOAR1 is a hub for ABA signaling to the nucleus, and CHLH/ABAR mediates a central signaling pathway to regulate downstream gene expression through SOAR1.
ISSN:1559-2316
1559-2324
1559-2324
DOI:10.4161/15592316.2014.972899