Effects of heavy metals on production of thiol compounds and antioxidant enzymes in Agaricus bisporus.
Effects of heavy metals on production of thiol compounds and antioxidant enzymes in Agaricus bisporus.
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DOI：
10.1016/j.ecoenv.2011.04.010
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发表时间：
2011-09
影响因子：
6.8
通讯作者：
Heng Xu;P. Song;Wenbo Gu;Zhi-rong Yang
中科院分区：
文献类型：
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作者：
Heng Xu;P. Song;Wenbo Gu;Zhi-rong Yang
在预实验中，双孢蘑菇菌丝体生长在PDL培养基中被发现具有相当大的耐受和积累重金属的能力。研究了铜、锌、铅、镉（硝酸盐）对A.在短期和长期暴露期间的双孢。结果表明，高浓度金属显著降低了长期暴露后可溶性蛋白质的含量，Cu和Zn显著增加了长期暴露后巯基化合物的含量，而高浓度Cd显著降低了长期暴露后巯基化合物的含量。此外，SOD活性显着增加后，长期暴露于金属，特别是镉。CAT活性在低浓度Cu和高浓度Zn的长期暴露后增强，在高浓度Pb的短期和长期暴露后增强。长期暴露于重金属后，POD活性显著升高，短期暴露于Cd和高浓度Pb后，POD活性升高。
In a pre-experiment, Agaricus bisporus mycelia grown in PDL medium were found to have a substantial ability to tolerate and accumulate heavy metals. In the study, we investigated changes in the contents of soluble protein and thiol compounds as well as the activities of antioxidant enzymes caused by copper, zinc, lead, and cadmium (nitrate salts) in mycelia of A. bisporus during short-and long-term exposure. Results showed that high-level metal concentrations significantly decrease the contents of soluble protein after long-term exposure, Cu and Zn concentrations significantly increase the thiol compounds levels after long-term exposure, while high-level Cd significantly decrease thiol compounds after long-term exposure. Additionally, SOD activities were significantly increased after long-term exposure to metals, especially to Cd. The CAT activities were enhanced after long-term exposure to low-level Cu and high-level Zn, and enhanced after short-and long-term exposure to high-level Pb. The POD activities were significantly increased after long-term exposure to metals, and increased after short-term exposure to Cd and high-level Pb.