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Effects of copper on induction of thiol-compounds and antioxidant enzymes by the fruiting body of Oudemansiella radicata.
- Source :
-
Ecotoxicology and environmental safety [Ecotoxicol Environ Saf] 2015 Jan; Vol. 111, pp. 60-5. Date of Electronic Publication: 2014 Oct 22. - Publication Year :
- 2015
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Abstract
- Oudemansiella radicata has been found to have ability to tolerate and accumulate heavy metals. In this study, to know about the metal tolerance and detoxification strategy of O. radicata, the tolerance responses in both cap and stipe of the fruiting body, including the copper content, the changes of thiol compounds production and antioxidant enzymes activities, caused by various copper stress (150-600 mg kg(-1)) during 2-6 days were investigated. Results showed that Cu content in the fruiting bodies increased with the increasing Cu concentrations and growing time, which was higher in cap than that in stipe. For thiols contents, the maximum level was in the sample at 300 mg kg(-1) Cu after 2 d both in cap and stipe, in accordance with superoxide dismutase (SOD) and glutathione reductase (GR) activities. Guaicol peroxidase (POD) activities reached maximum at 150 mg kg(-1) Cu after 4 d and 6 d, respectively in cap and stipe, while the maximum of catalase (CAT) activities was recorded at 300 and 600 mg kg(-1) Cu after 4 d in the cap and stipe, respectively. As a whole, low concentration of Cu stimulated the production of thiols and activated the antioxidant enzymes activities in the fruiting body of O. radicata after 2/4 d, while high-level Cu decreased the thiols production and enzymes activities after 4/6 d. Furthermore, the cap was more sensitive than the stipe to Cu exposure. Different indicators showed different responses to copper accumulation and the different fruiting part (cap and stipe) of O. radicata had ability to response the oxidative stress caused by Cu. Considering the metal accumulation and its own detoxification with short growing time, mushroom might have the potential to be used as bio-accumulator to deal with Cu exposure in the Cu-contaminated farmland soil.<br /> (Copyright © 2014 Elsevier Inc. All rights reserved.)
- Subjects :
- Agaricales enzymology
Agaricales metabolism
Catalase metabolism
Fruiting Bodies, Fungal enzymology
Fruiting Bodies, Fungal metabolism
Glutathione Reductase metabolism
Oxidative Stress drug effects
Peroxidase metabolism
Superoxide Dismutase metabolism
Agaricales drug effects
Antioxidants metabolism
Copper toxicity
Fruiting Bodies, Fungal drug effects
Soil Pollutants toxicity
Sulfhydryl Compounds metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1090-2414
- Volume :
- 111
- Database :
- MEDLINE
- Journal :
- Ecotoxicology and environmental safety
- Publication Type :
- Academic Journal
- Accession number :
- 25450915
- Full Text :
- https://doi.org/10.1016/j.ecoenv.2014.09.014