title: Effects of copper on induction of thiol-compounds and antioxidant enzymes by the fruiting body of Oudemansiella radicata.
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.
authors.affiliation: Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Jiang
authors.affiliation: Infinitus (China) Company Ltd., Guangzhou, Guangdong 510623, China.
authors.forename: Chuixin
authors.initials: C
authors.lastname: Qin
authors.affiliation: Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China.
authors.forename: Xueqin
authors.initials: X
authors.lastname: Shu
authors.affiliation: Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China.
authors.forename: Rong
authors.initials: R
authors.lastname: Chen
authors.affiliation: Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China.
authors.forename: Haihai
authors.initials: H
authors.lastname: Song
authors.affiliation: Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Li
authors.affiliation: Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China. Electronic address: xuheng64@sina.com.
authors.forename: Heng
authors.initials: H
authors.lastname: Xu
mesh_terms: D000363:Agaricales / Q000187:drug effects* / Q000201:enzymology / Q000378:metabolism; D000975:Antioxidants / Q000378:metabolism*; D002374:Catalase / Q000378:metabolism; D003300:Copper / Q000633:toxicity*; D048690:Fruiting Bodies, Fungal / Q000187:drug effects* / Q000201:enzymology / Q000378:metabolism; D005980:Glutathione Reductase / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D009195:Peroxidase / Q000378:metabolism; D012989:Soil Pollutants / Q000633:toxicity*; D013438:Sulfhydryl Compounds / Q000378:metabolism*; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D000975:Antioxidants; D012989:Soil Pollutants; D013438:Sulfhydryl Compounds; D003300:Copper; C121048:guaiacol peroxidase; D002374:Catalase; D009195:Peroxidase; D013482:Superoxide Dismutase; D005980:Glutathione Reductase
keywords: Antioxidant enzymes; Copper; Fruiting body; Oudemansiella radicata; Thiol compounds