Cited by 105Fungal and yeast genetics researchMitochondrial Function and PathologyAntifungal resistance and susceptibility

The Hog1 MAP kinase controls respiratory metabolism in the fungal pathogen Candida albicans

Alonso-Monge, Rebeca, Carvaihlo, Sara, Nombela, Cesar, Rial, Eduardo, Pla, Jesús·2009·Microbiology

Abstract

Signal transduction pathways mediated by mitogen-activated protein kinases (MAPKs) play crucial roles in eukaryotic cells. In the pathogenic fungus Candida albicans the HOG MAPK pathway regulates the response to external stresses (osmotic and oxidative among others) and is involved in morphogenesis and virulence. We show here that the lack of the Hog1 MAPK increases the sensitivity of this fungus to inhibitors of the respiratory chain.hog1 mutants also show an enhanced basal respiratory rate compared to parental strains, and higher levels of intracellular reactive oxygen species despite an increased expression of detoxifying enzymes. We also demonstrate that although oxidative phosphorylation is essentially unaffected,hog1 mutants have an altered mitochondrial membrane potential. Data indicate that hog1-defective mutants are more dependent on mitochondrial ATP synthesis, probably due to an increased cellular ATP demand. Our results therefore link a MAPK pathway with respiratory metabolism in pathogenic fungi.

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Crossref · 10.1099/mic.0.023309-0

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Authors
Alonso-Monge, R., Carvaihlo, S., Nombela, C., Rial, E., & Pla, J.
Affiliations
  • Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza de Ramón y Cajal s/n, E-28040 Madrid, Spain
  • Universidad Complutense de Madrid (ES)
  • Consejo Superior de Investigaciones Científicas (ES)
Venue
Microbiology
Published
2009-02-01
Volume
155
Issue
2
Pages
413-423
ISSN
  • 1350-0872 (ISSN-L)
  • 1465-2080
OpenAlex
W2154125232
Cited by
105
References
40
Citations by year
2026: 3 · 2025: 4 · 2024: 5 · 2023: 5 · 2022: 4 · 2021: 6 · 2020: 4 · 2019: 8 · 2018: 6 · 2017: 15 · 2016: 7 · 2015: 3 · 2014: 8 · 2013: 7 · 2012: 7
FWCI
2.68
Type
journal article
Language
en
Open access
closed
Locations
  • Microbiology (publishedVersion)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
Funders
  • Universidad Complutense de Madrid
  • Ministerio de Ciencia y Tecnología
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
Keywords
Hog1 MAP kinase, Candida albicans, respiratory metabolism, respiratory chain inhibitors, oxidative phosphorylation, reactive oxygen species, mitochondrial membrane potential, mitochondrial ATP production, osmotic stress response, oxidative stress response, fungal pathogenesis
MeSH terms
Adenosine Triphosphate, Candida albicans, Candidiasis, Chloramphenicol, Electron Transport, Fungal Proteins, Mitochondria, Mutation, Oligomycins, Oxygen, Oxidative Stress, Mitogen-Activated Protein Kinases, Membrane Potential, Mitochondrial

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