Accumulation and tolerance to cadmium heavy metal ions and induction of 14-3-3 gene expression in response to cadmium exposure in Coprinus atramentarius

文献类型： 外文期刊

第一作者： Xie, Chengjian

作者： Xie, Chengjian;Yang, Xingyong;Hu, Liujie;Liao, Dunxiu;Yang, Yongzhu

作者机构：

关键词： Cadmium;Coprinus atramentarius;Accumulation and tolerance;14-3-3;Heavy metal

期刊名称：MICROBIOLOGICAL RESEARCH （ 影响因子：6.1； 五年影响因子：6.5 ）

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收录情况： SCI

摘要： Cadmium (Cd), one of the most toxic heavy-metal pollutants, has a strong and irreversible tendency to accumulate. Bioremediation is a promising technology to remedy and control heavy metal pollutants because of its low cost and ability to recycle heavy metals. Coprinus atramentarius is recognized as being able to accumulate heavy metal ions. In this work, C. atramentarius is cultivated on a solid medium containing Cd2+ ions to analyze its ability to tolerate different concentrations of the heavy metal ion. It is found that the growth of C atramentarius is not significantly inhibited when the concentration of Cd2+ is less than 0.6 mg L-1. The accumulation capacity of C. atramentarius at different Cd2+ concentrations also was determined. The results show that 76% of the Cd2+ present can be accumulated even when the concentration of the Cd2+ is 1 mg L-1. The different proteins of C. atramentarius exposed to Cd2+ were further analyzed using gel electrophoresis. A 14-3-3 protein was identified and shown to be significantly up -regulated. In a further study, a full-length 14-3-3 gene was cloned containing a 759 by Open reading frame encoding a polypeptide consisting of 252 amino acids and 3 introns. The gene expression work also showed that the 14-3-3 was significantly induced, and showed coordinated patterns of expression, with Cd2+ exposure. (C) 2016 Elsevier GmbH. All rights reserved.

分类号： Q

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