Unveiling the synergistic mechanism of autochthonous fungal bioaugmentation and ammonium nitrogen biostimulation for enhanced phenanthrene degradation in oil-contaminated soils

doi:10.1016/j.jhazmat.2023.133293

	Dai, Yeliang 1,2,3; Li, Jibing 1,2,3; Wang, Shuang 1,2,3; Cai, Xixi 4; Zhao, Xuan 1,2,3; Cheng, Xianghui 1,2,3; Huang, Qihui 1,2,5; Yang, Xiumin 1,2; Luo, Chunling1,2,3 ; Zhang, Gan1,2,3
	Unveiling the synergistic mechanism of autochthonous fungal bioaugmentation and ammonium nitrogen biostimulation for enhanced phenanthrene degradation in oil-contaminated soils
刊名	JOURNAL OF HAZARDOUS MATERIALS
ISSN号	0304-3894
	2024-03-05
卷号	465 页码:11
DOI	10.1016/j.jhazmat.2023.133293
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
摘要	Autochthonous bioaugmentation and nutrient biostimulation are promising bioremediation methods for poly-cyclic aromatic hydrocarbons (PAHs) in contaminated agricultural soils, but little is known about their combined working mechanism. In this study, a microcosm trial was conducted to explore the combined mechanism of autochthonous fungal bioaugmentation and ammonium nitrogen biostimulation, using DNA stable-isotope-probing (DNA-SIP) and microbial network analysis. Both treatments significantly improved phenanthrene (PHE) removal, with their combined application producing the best results. The microbial community compo-sition was notably altered by all bioremediation treatments, particularly the PHE-degrading bacterial and fungal taxa. Fungal bioaugmentation removed PAHs through extracellular enzyme secretion but reduced soil microbial diversity and ecological stability, while nitrogen biostimulation promoted PAH dissipation by stimulating indigenous soil degrading microbes, including fungi and key bacteria in the soil co-occurrence networks, ensuring the ecological diversity of soil microorganisms. The combination of both approaches proved to be the most effective strategy, maintaining a high degradation efficiency and relatively stable soil biodiversity through the secretion of lignin hydrolytic enzymes by fungi, and stimulating the reproduction of soil native degrading microbes, especially the key degraders in the co-occurrence networks. Our findings provide a fresh perspective of the synergy between fungal bioaugmentation and nitrogen biostimulation, highlighting the potential of this combined bioremediation approach for in situ PAH-contaminated soils.
关键词	Nitrogen biostimulation PAHs Autochthonous fungal bioaugmentation Degrading microorganism Stable-isotope-probing
WOS记录号	WOS:001143630800001
收录类别	SCI
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.gig.ac.cn/handle/344008/76098
专题	有机地球化学国家重点实验室
通讯作者	Li, Jibing; Luo, Chunling
作者单位	1.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Hong Kong 510640, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 4.Guangdong Acad Agr Sci, Guangdong Key Lab Ornamental Plant Germplasm Innov, Environm Hort Res Inst, Guangzhou 510640, Peoples R China 5.Jinan Univ, Sch Environm, Guangdong Key Lab Environm Pollut & Hlth, Guangzhou 510632, Peoples R China
推荐引用方式 GB/T 7714	Dai, Yeliang,Li, Jibing,Wang, Shuang,et al. Unveiling the synergistic mechanism of autochthonous fungal bioaugmentation and ammonium nitrogen biostimulation for enhanced phenanthrene degradation in oil-contaminated soils[J]. JOURNAL OF HAZARDOUS MATERIALS,2024,465:11.
APA	Dai, Yeliang.,Li, Jibing.,Wang, Shuang.,Cai, Xixi.,Zhao, Xuan.,...&Zhang, Gan.(2024).Unveiling the synergistic mechanism of autochthonous fungal bioaugmentation and ammonium nitrogen biostimulation for enhanced phenanthrene degradation in oil-contaminated soils.JOURNAL OF HAZARDOUS MATERIALS,465,11.
MLA	Dai, Yeliang,et al."Unveiling the synergistic mechanism of autochthonous fungal bioaugmentation and ammonium nitrogen biostimulation for enhanced phenanthrene degradation in oil-contaminated soils".JOURNAL OF HAZARDOUS MATERIALS 465(2024):11.