Skip to main content
Log in

Bacterial redox response factors in the management of environmental oxidative stress

  • Review
  • Published:
World Journal of Microbiology and Biotechnology Aims and scope Submit manuscript

Abstract

Bacteria evolved to survive in the available environmental chemosphere via several cellular mechanisms. A rich pool of antioxidants and stress regulators plays a significant role in the survival of bacteria in unfavorable environmental conditions. Most of the microbes exhibit resistant phenomena in toxic environment niches. Naturally, bacteria possess efficient thioredoxin reductase, glutaredoxin, and peroxiredoxin redox systems to handle environmental oxidative stress. Further, an array of transcriptional regulators senses the oxidative stress conditions. Transcription regulators, such as OxyR, SoxRS, PerR, UspA, SsrB, MarA, OhrR, SarZ, etc., sense and transduce bacterial oxidative stress responses. The redox-sensitive transcription regulators continuously recycle the utilized antioxidant enzymes during oxidative stress. These regulators promote the expression of antioxidant enzymes such as superoxide dismutase, catalase, and peroxides that overcome oxidative insults. Therefore, the transcriptional regulations maintain steady-state activities of antioxidant enzymes representing the resistance against host cell/environmental oxidative insults. Further, the redox system provides reducing equivalents to synthesize biomolecules, thereby contributing to cellular repair mechanisms. The inactive transcriptional regulators in the undisturbed cells are activated by oxidative stress. The oxidized transcriptional regulators modulate the expression of antioxidant and cellular repair enzymes to survive in extreme environmental conditions. Therefore, targeting these antioxidant systems and response regulators could alter cellular redox homeostasis. This review presents the mechanisms of different redox systems that favor bacterial survival in extreme environmental oxidative stress conditions.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

Abbreviations

CHP:

Cumene hydroperoxide

COX:

Cyclooxygenase

DNR:

Dissimilative nitrate respiration regulator

FNR:

Fumarate-nitrate reduction regulator

Fur:

Ferric uptake regulator

γ – GCS:

γ glutamyl l cysteinyl glycine

GPx:

Glutathione peroxidase

GSSG:

Glutathione disulfide

GS·:

Thiyl radical

GR:

Glutathione reductase

H2O2 :

Hydrogen peroxide

HO·:

Hydroxyl radical

Mrx1:

Mycoredoxin 1

NsrR:

Nitric oxide-responsive regulator

O2· :

Superoxide anion

ONOO :

Peroxynitrite

OHP:

Organic hydroperoxides

Prx:

Peroxiredoxin

RNR:

Ribonucleotide reductase

-SH/-SOH:

Thiol-sulfenic acid

SOD:

Superoxide dismutase

Trx:

Thioredoxin

TrxR:

Thioredoxin reductase

UspA:

Universal stress protein A

References

Download references

Acknowledgements

UGC-DAE Consortium of Scientific Research has supported the work. The authors acknowledge the Department of Science and Technology (DST), New Delhi.

Funding

Funding was provided by UGC-DAE Consortium of Scientific Research (UGC-DAE-CSR-KS/CRS/19/RB-01/1044/1064).

Author information

Authors and Affiliations

Authors

Contributions

NRP conceptualized the idea and designed the work. MS carried out the computational framework and graphics and wrote the draft version of the manuscript. SR contributed to the design of the manuscript.

Corresponding author

Correspondence to N Rajendra Prasad.

Ethics declarations

Conflict of interest

The authors have declared no conflict of interest.

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary Material 1

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

M, S., N, R.P. & Rajendrasozhan, S. Bacterial redox response factors in the management of environmental oxidative stress. World J Microbiol Biotechnol 39, 11 (2023). https://doi.org/10.1007/s11274-022-03456-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s11274-022-03456-5

Keywords

Navigation