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首页> 外文期刊>Soil Biology & Biochemistry >Dissipation of polycyclic aromatic hydrocarbons (PAHs) in soil microcosms amended with mushroom cultivation substrate.
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Dissipation of polycyclic aromatic hydrocarbons (PAHs) in soil microcosms amended with mushroom cultivation substrate.

机译：多环芳烃（PAHs）在蘑菇栽培基质改良的土壤微观世界中的消散。

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摘要

The potential of mushroom cultivation substrate (MCS) in bioremediation was examined in polycyclic aromatic hydrocarbon (PAH)-contaminated soil. After a 60-day incubation, 32.9% dissipation of the 15 studied PAHs was observed in MCS-amended microcosms, with anthracene, benzo(a)pyrene and benzo(a)anthracene being the most degradable PAHs. MCS significantly increased the abundance and changed the community compositions of bacteria, fungi and aromatic hydrocarbon degraders. Two species belonging to the Sordariomycetes of the Ascomycota were enriched in all MCS-treated soil samples, and coupled with the unique changes in the PAH profile, this implies the involvement of laccase-like enzymes. Limited improvement was observed after adding Pleurotus ostreatus, possibly because of its poor colonization of the soil. In addition, alfalfa appeared to antagonize the bioremediation effects of MCS. The results of this study suggest that MCS can be a cost-effective and green biostimulation agent, thereby providing support for the development of MCS-based biostimulation of PAH-contaminated soil.
机译：在多环芳烃（PAH）污染的土壤中，研究了蘑菇栽培基质（MCS）在生物修复中的潜力。孵育60天后，在MCS修正的缩影中观察到15个研究的PAHs的32.9％消散，其中蒽，苯并（a）and和苯并（a）蒽是最可降解的PAHs。 MCS显着增加了细菌的丰度并改变了细菌，真菌和芳香烃降解剂的群落组成。在所有MCS处理的土壤样品中都富集了两个属于子囊菌的拟南芥属菌种，并加上了PAH谱的独特变化，这暗示了漆酶样酶的参与。添加白灵菇后，观察到有限的改良，这可能是由于其土壤定殖性较差。此外，苜蓿似乎拮抗MCS的生物修复作用。这项研究的结果表明，MCS可以是一种具有成本效益的绿色生物刺激剂，从而为开发基于MCS的PAH污染土壤的生物刺激提供支持。

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