Hydrogen peroxide participates in perception and transduction of cold stress signal in synechocystis
Document Type
Article
Publication Date
6-1-2018
Abstract
The double mutant ΔkatG/tpx of cyanobacterium Synechocystis sp. strain PCC 6803, defective in the anti-oxidative enzymes catalase (KatG) and thioredoxin peroxidase (Tpx), is unable to grow in the presence of exogenous H2O2. The ΔkatG/tpx mutant is shown to be extremely sensitive to very low concentrations of H2O2, especially when intensified with cold stress. Analysis of gene expression in both wild-type and ΔkatG/tpx mutant cells treated by combined cold/oxidative stress revealed that H2O2 participates in regulation of expression of cold-responsive genes, affecting either signal perception or transduction. The central role of a transmembrane stress-sensing histidine kinase Hik33 in the cold/oxidative signal transduction pathway is discussed.
Publication Title
Plant and Cell Physiology
First Page Number
1255
Last Page Number
1264
DOI
10.1093/pcp/pcy067
Recommended Citation
Fedurayev, Pavel V.; Mironov, Kirill S.; Gabrielyan, David A.; Bedbenov, Vladimir S.; Zorina, Anna A.; Shumskaya, Maria; and Los, Dmitry A., "Hydrogen peroxide participates in perception and transduction of cold stress signal in synechocystis" (2018). Kean Publications. 1490.
https://digitalcommons.kean.edu/keanpublications/1490