香菇和黄孢原毛平革菌对土壤中五氯苯酚生物转化的环境参数影响

Influence of environmental parameters on pentachlorophenol biotransformation in soil by Lentinula edodes and Phanerochaete chrysosporium.

作者信息

Okeke B C, Smith J E, Paterson A, Watson-Craik I A

机构信息

Department of Bioscience and Biotechnology, University of Strathclyde, Glasgow, UK.

出版信息

Appl Microbiol Biotechnol. 1996 Mar;45(1-2):263-6. doi: 10.1007/s002530050681.

DOI:10.1007/s002530050681

PMID:8920199

Abstract

The influences of temperature, soil moisture potential and initial pH on the biotransformation of pentachlorophenol (PCP) by the lignicolous fungi Lentinula edodes and Phanerochaete chrysosporium were examined. At 10 degrees C, L. edodes was more effective in degrading PCP (P < 0.05) than P. chrysosporium. At 15 degrees C similar results were obtained for the two fungi. The highest levels of degradation occurred for both fungi at 25 degrees C. With P. chrysosporium, the extent of PCP elimination was directly related to soil moisture content and optimal at approximately 47%. With L. edodes, in contrast, the process was inversely related to moisture content and maximal at 26%. The initial soil pH also had a marked influence, and pH 4.0 was optimal for both fungi.

摘要

研究了温度、土壤水分势和初始pH值对木生真菌香菇和黄孢原毛平革菌对五氯苯酚（PCP）生物转化的影响。在10℃时，香菇降解PCP的效果比黄孢原毛平革菌更显著（P<0.05）。在15℃时，两种真菌得到了相似的结果。两种真菌在25℃时降解水平最高。对于黄孢原毛平革菌，PCP的去除程度与土壤含水量直接相关，在约47%时达到最佳。相比之下，对于香菇，该过程与含水量呈负相关，在26%时达到最大值。初始土壤pH值也有显著影响，pH 4.0对两种真菌均为最佳。