Redox in Microorganisms, 2nd Edition

Topic Information

Dear Colleagues,

This is the second edition of “Redox in Microorganisms”( https://www.mdpi.com/topics/Redox_Microorganisms). The mechanisms by which microorganisms fight oxidative stress are essential for their survival in different environments. These include a large arsenal of molecular strategies to prevent or repair the oxidation of proteins, lipids, or nucleic acids, including antioxidants or enzymes that may rescue different vital components from irreversible oxidation. The molecular factors involved in these processes are relevant for pathogenesis, bioremediation, or industrial microbiology. Therefore, the study of redox biology in microorganisms is providing new insights into very diverse fields, and their translational potential is rapidly increasing. We invite you to submit your latest research findings or a review article on this special topic, which focuses on any aspect of the redox biology of microorganisms. We look forward to your contribution.

Dr. Michal Letek
Dr. Volker Behrends
Topic Editors

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Antibiotics antibiotics	4.8	5.5	2012	13.7 Days	CHF 2900	Submit
Antioxidants antioxidants	7.0	8.8	2012	13.9 Days	CHF 2900	Submit
Journal of Fungi jof	4.7	4.9	2015	18.4 Days	CHF 2600	Submit
Microbiology Research microbiolres	1.5	1.3	2010	16.6 Days	CHF 1600	Submit
Microorganisms microorganisms	4.5	6.4	2013	15.1 Days	CHF 2700	Submit

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All Antibiotics Antioxidants JoF Microbiology Research Microorganisms

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19 pages, 1881 KiB  

Open AccessArticle

Unravelling the Role of Candida albicans Prn1 in the Oxidative Stress Response through a Proteomics Approach

by Victor Arribas, Lucia Monteoliva, María Luisa Hernáez, Concha Gil and Gloria Molero

Antioxidants 2024, 13(5), 527; https://doi.org/10.3390/antiox13050527 - 26 Apr 2024

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Abstract

Candida albicans Prn1 is a protein with an unknown function similar to mammalian Pirin. It also has orthologues in other pathogenic fungi, but not in Saccharomyces cerevisiae. Prn1 highly increases its abundance in response to H₂O₂ treatment; thus, to [...] Read more.

Candida albicans Prn1 is a protein with an unknown function similar to mammalian Pirin. It also has orthologues in other pathogenic fungi, but not in Saccharomyces cerevisiae. Prn1 highly increases its abundance in response to H₂O₂ treatment; thus, to study its involvement in the oxidative stress response, a C. albicans prn1∆ mutant and the corresponding wild-type strain SN250 have been studied. Under H₂O₂ treatment, Prn1 absence led to a higher level of reactive oxygen species (ROS) and a lower survival rate, with a higher percentage of death by apoptosis, confirming its relevant role in oxidative detoxication. The quantitative differential proteomics studies of both strains in the presence and absence of H₂O₂ indicated a lower increase in proteins with oxidoreductase activity after the treatment in the prn1∆ strain, as well as an increase in proteasome-activating proteins, corroborated by in vivo measurements of proteasome activity, with respect to the wild type. In addition, remarkable differences in the abundance of some transcription factors were observed between mutant and wild-type strains, e.g., Mnl1 or Nrg1, an Mnl1 antagonist. orf19.4850, a protein orthologue to S. cerevisiae Cub1, has shown its involvement in the response to H₂O₂ and in proteasome function when Prn1 is highly expressed in the wild type. Full article

(This article belongs to the Topic Redox in Microorganisms, 2nd Edition)

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19 pages, 9810 KiB  

Open AccessArticle

The Fecal Redox Potential in Healthy and Diarrheal Pigs and Their Correlation with Microbiota

by Ni Feng, Rongying Xu, Dongfang Wang, Lian Li, Yong Su and Xiaobo Feng

Antioxidants 2024, 13(1), 96; https://doi.org/10.3390/antiox13010096 - 12 Jan 2024

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Abstract

The redox potential plays a critical role in sustaining the stability of gut microbiota. This study measured the fecal redox potential in healthy and diarrheal pigs using direct and dilution methods and investigated their correlation with microbiota. The results showed that the fluctuations [...] Read more.

The redox potential plays a critical role in sustaining the stability of gut microbiota. This study measured the fecal redox potential in healthy and diarrheal pigs using direct and dilution methods and investigated their correlation with microbiota. The results showed that the fluctuations in the redox potential of healthy pig feces were consistent using two different methods and the two methods are equivalent based on an equivalence test. The redox potential was positively correlated with the number of fungi and negatively related to the total bacteria. The relative or absolute abundances of many bacteria at the phyla and genus levels were associated with redox potential. In diarrheal pigs, the potentiometric trends of the two methods demonstrated an opposing pattern and the correlation with total bacteria was reversed. Precipitously elevated redox potential was detected post-diarrhea using dilution methods. The absolute abundance of Escherichia-Shigella and Fuurnierella was positively correlated with redox potential, while both relative and absolute abundances of Limosilactobacillus were positively correlated. These results suggest that both methods are suitable for detecting gut redox potential in healthy pigs, while the dilution method is more suitable for diarrheal pigs. The findings on the correlation of Limosilactobacillus, Prevotella, and Escherichia-Shigella with redox potential offer novel insights for targeted modulation of intestinal health. Full article

(This article belongs to the Topic Redox in Microorganisms, 2nd Edition)

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