Department of Agrobiology and Agrochemistry, University of Tuscia, Via San Camillo De Lellis s.n.c., 01100 Viterbo, Italy.
J Hazard Mater. 2010 Nov 15;183(1-3):669-76. doi: 10.1016/j.jhazmat.2010.07.078. Epub 2010 Jul 27.
This study comparatively investigated the PAH degradation ability of Lentinus tigrinus and Irpex lacteus in a historically polluted soil and creosote-impregnated shavings. With this regard, the effect of type of inoculum carrier (i.e., wheat straw, corn cobs and commercial pellets) and contaminant bioavailability was thoroughly determined. Although degradation performances of L. tigrinus were not significantly affected by the type of the support, they were invariably better than those of I. lacteus on both the polluted soil and the creosote-impregnated shavings. Although degradation efficiencies of all fungal microcosms were highly and significantly correlated with bioavailability, certain PAHs, such as chrysene and benzo[a]pyrene, were removed by L. tigrinus from the polluted soil at amounts that exceeded about 2.3-fold their respective bioavailabilities. Degradation of PAHs was negatively correlated with their organic carbon sorption coefficients (K(oc)) and hydrophobicity (logP). The strength of linear association with the latter parameter, however, was not affected by the type of contaminated matrix in L. tigrinus-based microcosms while it was significantly larger in the historically polluted soil than in the creosote-impregnated shavings in I. lacteus ones.
本研究比较了香菇和蜜环菌在历史污染土壤和杂酚油浸渍刨花中的多环芳烃（PAH）降解能力。为此，彻底确定了接种载体类型（即小麦秸秆、玉米芯和商业颗粒）和污染物生物利用度的影响。虽然香菇的降解性能不受载体类型的显著影响，但在污染土壤和杂酚油浸渍刨花上，其性能始终优于蜜环菌。虽然所有真菌微宇宙的降解效率都与生物利用度高度显著相关，但某些多环芳烃，如䓛和苯并[a]芘，被香菇从污染土壤中去除的量超过其各自生物利用度的 2.3 倍左右。多环芳烃的降解与它们的有机碳吸附系数（Koc）和疏水性（logP）呈负相关。然而，与后者参数的线性关联强度在香菇基微宇宙中不受污染基质类型的影响，而在蜜环菌基微宇宙中，历史污染土壤中的关联强度明显大于杂酚油浸渍刨花。
