Effect of environmental C/N ratio on activities of lignin-degrading enzymes produced by Phanerochaete chrysosporium

文献类型： 外文期刊

第一作者： Wu, Qitang

作者： Wu, Qitang;Hou, Meifang;Tang, Xiaoyan;Zhou, Jian;Huang, Saihua;Huang, Deyin;Hou, Meifang;Tang, Xiaoyan

作者机构：

关键词： biodegration; lignin peroxide; manganese peroxidase; peroxidase; persistent organic pollutant; polysaccharide; white rot fungus

期刊名称：PEDOSPHERE （ 影响因子：3.911； 五年影响因子：4.814 ）

ISSN： 1002-0160

年卷期： 2020 年 30 卷 2 期

页码：

收录情况： SCI

摘要： Lignin-degrading enzymes secreted by white rot fungi play an important role in the degradation of lignin and persistent organic pollutants (POPs). In this study, effect of environmental C/N ratio on the activities of lignin-degrading enzymes, lignin peroxide (LiP) and manganese peroxidase (MnP), produced by Phanerochaete chrysosporium, a white rot fungus, was investigated. Glucose was used as C source, and ammonium tartrate of different concentrations was used as N source to provide different C/N ratios. Relationships between LiP and MnP activities and environmental C/N ratio were explored. The results showed that the higher the N source concentration, the faster the mycelium pellets aged. The faster the mycelium dry weight increased, the higher the LiP and MnP activities. A high C/N ratio was a necessary condition for the secretion of LiP or MnP. In addition, mycelium dry weight essentially affected enzyme activities. In the 122 C/N ratio and 50 C/N ratio treatments, mycelium dry weight essentially affected MnP activity and both LiP and MnP activities, respectively.

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