ArticleBMC microbiology2015
An extracytoplasmic function sigma factor-dependent periplasmic glutathione peroxidase is involved in oxidative stress response of Shewanella oneidensis.
Article in BMC microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
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- Roles of theFrontiers in cellular and infection microbiology · 2025Article
- Unraveling nitrogen metabolism, cold and stress adaptation in polarFrontiers in microbiology · 2024Article
- Implication of the σMicrobiology spectrum · 2023Article
- An RpoN-dependent PEP-CTERM gene is involved in floc formation of an Aquincola tertiaricarbonis strain.BMC microbiology · 2023Article
- The Interaction between Oxidative Stress Biomarkers and Gut Microbiota in the Antioxidant Effects of Extracts fromAntioxidants (Basel, Switzerland) · 2023Article
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- Physiological and Proteomic Responses of Dairy Buffalo to Heat Stress Induced by Different Altitudes.Metabolites · 2022Article
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- Dissimilatory Nitrate Reduction to Ammonium (DNRA) and Denitrification Pathways Are Leveraged by Cyclic AMP Receptor Protein (CRP) Paralogues Based on Electron Donor/Acceptor Limitation in Shewanella loihica PV-4.Applied and environmental microbiology · 2021Article
- Transcriptome Analysis Reveals Cr(VI) Adaptation Mechanisms inFrontiers in microbiology · 2021Article
- Rewiring the specificity of extracytoplasmic function sigma factors.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Adaptation of the Marine BacteriumInternational journal of molecular sciences · 2020Article
- Adaptation to Photooxidative Stress: Common and Special Strategies of the AlphaproteobacteriaMicroorganisms · 2020Article
- Production of Highly Active Extracellular Amylase and Cellulase FromFrontiers in microbiology · 2020Article
- Differential gene content and gene expression for bacterial evolution and speciation of Shewanella in terms of biosynthesis of heme and heme-requiring proteins.BMC microbiology · 2019Article
- DNA phosphorothioate modification-a new multi-functional epigenetic system in bacteria.FEMS microbiology reviews · 2019Review
- RpoN (σApplied and environmental microbiology · 2017Article
- Regulation of Gene Expression in Shewanella oneidensis MR-1 during Electron Acceptor Limitation and Bacterial Nanowire Formation.Applied and environmental microbiology · 2016Article
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6 authors.
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Abstract
backgroundBacteria use alternative sigma factors (σs) to regulate condition-specific gene expression for survival and Shewanella harbors multiple ECF (extracytoplasmic function) σ genes and cognate anti-sigma factor genes. Here we comparatively analyzed two of the rpoE-like operons in the strain MR-1: rpoE-rseA-rseB-rseC and rpoE2-chrR.
resultsRpoE was important for bacterial growth at low and high temperatures, in the minimal medium, and high salinity. The degP/htrA orthologue, required for growth of Escherichia coli and Pseudomonas aeruginosa at high temperature, is absent in Shewanella, while the degQ gene is RpoE-regulated and is required for bacterial growth at high temperature. RpoE2 was essential for the optimal growth in oxidative stress conditions because the rpoE2 mutant was sensitive to hydrogen peroxide and paraquat. The operon encoding a ferrochelatase paralogue (HemH2) and a periplasmic glutathione peroxidase (PgpD) was identified as RpoE2-dependent. PgpD exhibited higher activities and played a more important role in the oxidative stress responses than the cytoplasmic glutathione peroxidase CgpD under tested conditions. The rpoE2-chrR operon and the identified regulon genes, including pgpD and hemH2, are coincidently absent in several psychrophilic and/or deep-sea Shewanella strains.
conclusionIn S. oneidensis MR-1, the RpoE-dependent degQ gene is required for optimal growth under high temperature. The rpoE2 and RpoE2-dependent pgpD gene encoding a periplasmic glutathione peroxidase are involved in oxidative stress responses. But rpoE2 is not required for bacterial growth at low temperature and it even affected bacterial growth under salt stress, indicating that there is a tradeoff between the salt resistance and RpoE2-mediated oxidative stress responses.
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