通过使用稳定同位素探测,对反抗性石油碳化合物组件的本土真菌生物增大机制进行新的洞察

通过使用稳定同位素探测,对反抗性石油碳化合物组件的本土真菌生物增大机制进行新的洞察

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Qihui Huang¹, Yeliang Dai², Guiqin Yang³

¹Guangdong Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou 511443, China; State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.

The Science of the total environment

|December 19, 2024

概括

本土真菌生物增殖 (AFB) 增强了土壤中石油碳化合物的去除. Fusarium solani 和 Aspergillus fumigatus 直接降解一些污染物,而土著微生物有助于降解其他污染物,揭示了不同的降解途径.

科学领域:

环境微生物学环境微生物学
生物修复科学生物修复科学

背景情况:

被石油碳化合物 (PH) 污染的土壤带来环境风险.
本土真菌生物增生 (AFB) 是一种潜在的补救策略.
AFB的机制,特别是对于反叛的PH,需要进一步阐明.

研究的目的:

为了研究Fusarium solani LJD-11和Aspergillus fumigatus LJD-29的AFB机制.
通过AFB了解n-Hexadecane (n-Hex),Benzo[a]pyrene (BaP) 和Dibenzothiophene (DBT) 的降解途径.
评估AFB对土壤微生物群落结构和功能的影响.

主要方法:

稳定同位素探测 (SIP) 与高通量测序相结合.
两种碳化合物降解真菌菌株 (Fusarium solani LJD-11和Aspergillus fumigatus LJD-29) 的应用.
对污染物去除速度和土壤微生物群落变化的分析.

主要成果:

这两种真菌菌株都显著改善了污染物去除,联合应用是最有效的.
AFB改变了土壤微生物多样性和社区结构,更高的多样性与更好的降解有关.
真菌菌株直接吸收n-Hex和DBT,但不吸收BaP;本地细菌和真菌对BaP降解至关重要.

结论:

对于不同的PH成分,AFB显示出不同的降解途径.
AFB可以恢复土壤微生物网络的复杂性和稳定性.
AFB是一个有前途的现场生物修复战略,用于石油污染的土壤.

关键词:

碳化合物降解的真菌可以降解碳化合物.土著的功能性细菌是土著的功能性细菌.微生物社区动态微生物社区动态微生物网络是一个微生物网络.油污污染的土壤被污染了

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