Cadmium induced hydrogen peroxide accumulation and responses of enzymatic antioxidants in Phanerochaete chrysosporium

Cadmium induced hydrogen peroxide accumulation and responses of enzymatic antioxidants in Phanerochaete chrysosporium
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镉诱导黄孢原毛平革菌过氧化氢积累和酶促抗氧化剂的反应

DOI:
10.1016/j.ecoleng.2014.11.060
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发表时间:
2015-02
期刊:
Ecological Engineering(SCI2013 IF=3.041)
影响因子:
--
通讯作者:
Dan-Lian Huang Hao-Ran DongCui LaiMing Chen
Dan-Lian Huang Hao-Ran DongCui LaiMing Chen
中科院分区:
其他
文献类型:
--
作者:
Piao Xu;Guangming Zeng;Dan-Lian Huang Hao-Ran DongCui LaiMing Chen

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白腐真菌黄孢原毛革菌在重金属污染生物修复中得到广泛应用,但重金属污染往往会导致白腐菌的胁迫暴露。暴露研究表明,镉的生物积累触发H2 O2的产生。此后,H2 O2,作为信号分子,激活酶的抗氧化反应的情况下,SOD和CAT的连接。高水平的R(SOD/CAT)被发现最初在镉暴露下,然后发生了显着下降,随着时间的推移镉暴露。抗氧化活性也提供了一个替代的指示抗氧化反应的存在后,镉暴露,通过耦合H2 O2水平与抗氧化活性的变化。这一发现对理解植物的耐受行为和解毒机制具有潜在的意义,有利于扩大P.生物修复技术
The white-rot fungiPhanerochaete chrysosporiumhave been widely applied in heavy metal bioremediation, which commonly results in a stress exposure. Exposure studies showed that Cd bioaccumulation triggered H2O2generation. Thereafter, the H2O2, as signal molecules, activated the enzymatic antioxidant response in the case of the conjunction of SOD and CAT. High levels of R (SOD/CAT) were found initially under Cd exposure, and then a significant decline occurred in time-course Cd exposure. Antioxidant activities also provided an alternative as an indication of the existence of antioxidant response upon Cd exposure, via coupling H2O2level with the variation in antioxidant activities. This finding potentially has implications for the understanding of tolerance behavior and detoxification mechanisms, which is beneficial to expand the application ofP. chrysosporiumin bioremediation biotechnology.
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