Abstract
Among the technologies for heavy metal remediation, bioremediation technology has gained extensive attention because of its low processing costs and high efficiency. The white-rot fungus Phanerochaete chrysosporium (P. chrysosporium) which has a good tolerance to heavy metals has been widely used in the heavy metal bioremediation. In order to figure out the molecular mechanisms involved in the oxidative stress of P. chrysosporium against metal toxicity, we examined the effect of Pb2+ on the levels of reactive oxygen species and the production of malondialdehyde. Results showed that P. chrysosporium could adjust Pb-stressed condition by regulating the unique oxidation-antioxidation process in cells and kept a balance between oxidation and antioxidation when it was threatened by a different dose of Pb2+. Investigations into the oxidative stress of P. chrysosporium to lead could not only provide a better understanding of the relationship between lead and oxidative stress in P. chrysosporium, but also offer important informations on the development of fungal-based remediation technologies to reduce the toxic effects of lead.
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Abbreviations
- Pb:
-
lead
- ROS:
-
reactive oxygen species
- O2− :
-
superoxide
- H2O2 :
-
hydrogen peroxide
- •OH:
-
hydroxyl radical
- P. chrysosporium :
-
Phanerochaete chrysosporium
- MDA:
-
malondialdehyde
- TBA:
-
thiobarbituric acid
- R 2 :
-
linearly dependent coefficient
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Acknowledgments
This study was financially supported by the National Natural Science Foundation of China (51039001, 51378190, 50808073, 50978088, 51278176, and 51108178), the Environmental Protection Technology Research Program of Hunan (2007185), the Program for New Century Excellent Talents in University (NCET-13-0186), and the Program for Changjiang Scholars and Innovative Research Team in University (IRT-13R17).
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Wan, J., Zeng, G., Huang, D. et al. The Oxidative Stress of Phanerochaete chrysosporium Against Lead Toxicity. Appl Biochem Biotechnol 175, 1981–1991 (2015). https://doi.org/10.1007/s12010-014-1397-x
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DOI: https://doi.org/10.1007/s12010-014-1397-x