Effect of environmental C/N ratio on activities of lignin-degrading enzymes produced by Phanerochaete chrysosporium
文献类型： 外文期刊
作者： Huang, Saihua 3 ; Huang, Deyin 3 ; Wu, Qitang 1 ; Hou, Meifang 2 ; Tang, Xiaoyan 2 ; Zhou, Jian 2 ;
作者机构： 1.South China Agr Univ, Coll Nat Resources & Environm, 483 Wushan St, Guangzhou 510642, Peoples R China
2.Shanghai Inst Technol, Sch Ecol Technol & Engn, 100 Haiquan, Shanghai 201418, Peoples R China
3.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, 808 Tianyuan Rd, Guangzhou 510650, Peoples R China
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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