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- Publisher
- Springer Journals
- Copyright
- Copyright © 2002 by MAIK “Nauka/Interperiodica”
- Subject
- Life Sciences; Medical Microbiology; Biochemistry, general; Microbiology
- ISSN
- 0003-6838
- eISSN
- 1608-3024
- DOI
- 10.1023/A:1015454921023
- Publisher site
- See Article on Publisher Site
Abstract
The addition of menadione into the medium during cultivation ofNeurospora crassa in the dark activated its constitutive superoxide dismutase. Exposure to light not only activated superoxide dismutase and catalase, but also increased the content of neurosporaxanthin. Superoxide dismutase activity in the mixed (+/–) cultures of Blakeslea trispora synthesizing β-carotene in the dark was much lower than that inNeurospora crassa. The superoxide dismutase activity and catalase activity further decreased in oxidative stress with a parallel increase in the content of β-carotene. Our results indicate that neurosporaxanthin possesses photoprotective properties in Neurospora crassa. In Blakeslea trispora (+/–) fungi, β-carotene acts as a major antioxidant during inactivation of enzymes that detoxify reactive oxygen species.
Journal
Applied Biochemistry and Microbiology – Springer Journals
Published: Oct 10, 2004