|
1
|
Leeuw NJ, Swart CW, Ncango DM, Kriel WM, Pohl CH, van Wyk PW, Kock JL. Anti-inflammatory drugs selectively target sporangium development in Mucor. Can J Microbiol 2009; 55:1392-6. [DOI: 10.1139/w09-096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
It is known that acetylsalicylic acid, an anti-inflammatory and anti-mitochondrial drug, targets structure development and functions of yeasts depending on elevated levels of mitochondrial activity. Using antibody probes, we previously reported that sporangia of Mucor circinelloides also contain increased mitochondrial activity, yielding high levels of 3-hydroxyoxylipins. This was, however, not found in Mortierella alpina (subgenus Mortierella ). In this study we report that acetylsalicylic acid (aspirin) also targets sporangium development of Mucor circinelloides selectively, while hyphae with lower levels of mitochondrial activity are more resistant. Similar results were obtained when the anti-inflammatory compounds benzoic acid, ibuprofen, indomethacin, and salicylic acid were tested. The anti-inflammatory drugs exerted similar effects on this dimorphic fungus as found under oxygen-limited conditions. Interestingly, sporangium development of Mortierella alpina was found not to be selectively targeted by these drugs. Mortierella alpina, which could not exhibit dimorphic growth under oxygen-limited conditions, was also more sensitive to the anti-inflammatory drugs when compared with Mucor circinelloides. These results prompt further research to assess the applicability of these antimitochondrial antifungals to protect plants and animals against Mucor infections.
Collapse
Affiliation(s)
- Ntsoaki J. Leeuw
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Centre for Microscopy, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
| | - Chantel W. Swart
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Centre for Microscopy, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
| | - Desmond M. Ncango
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Centre for Microscopy, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
| | - Wilmarie M. Kriel
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Centre for Microscopy, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
| | - Carolina H. Pohl
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Centre for Microscopy, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
| | - Pieter W.J. van Wyk
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Centre for Microscopy, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
| | - Johan L.F. Kock
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
- Centre for Microscopy, University of the Free State, P.O. Box 339, Bloemfontein 9301, South Africa
| |
Collapse
|
|
3
|
Swart CW, van Wyk PW, Pohl CH, Kock JL. Variation in yeast mitochondrial activity associated with asci. Can J Microbiol 2008; 54:532-6. [DOI: 10.1139/w08-036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An increase in mitochondrial membrane potential (ΔΨm) and mitochondrially produced 3-hydroxy (3-OH) oxylipins was experienced in asci of the nonfermentative yeasts Galactomyces reessii and Lipomyces starkeyi and the fermentative yeasts Pichia farinosa and Schizosaccharomyces octosporus . Strikingly, asci of Zygosaccharomyces bailii showed no increase in mitochondrial activity (ΔΨm and oxylipin production). As expected, oxygen deprivation only inhibited ascus formation in those yeasts with increased ascus mitochondrial activity. We conclude that ascus formation in yeasts is not always dependent on mitochondrial activity. In this case, fermentation may provide enough energy for ascus formation in Z. bailii.
Collapse
Affiliation(s)
- Chantel W. Swart
- UNESCO-MIRCEN: Industrial Biotechnology, Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
- Centre for Confocal & Electron Microscopy, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
| | - Pieter W.J. van Wyk
- UNESCO-MIRCEN: Industrial Biotechnology, Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
- Centre for Confocal & Electron Microscopy, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
| | - Carolina H. Pohl
- UNESCO-MIRCEN: Industrial Biotechnology, Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
- Centre for Confocal & Electron Microscopy, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
| | - Johan L.F. Kock
- UNESCO-MIRCEN: Industrial Biotechnology, Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
- Centre for Confocal & Electron Microscopy, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
| |
Collapse
|