A highly effective polycyclic aromatic hydrocarbon-degrading bacterium,Paracoccus ***-2,shows opposite remediation potential in two soil types

作     者：Wei CHEN Ying TENG Wenjie REN Yongming LUO Yao YU Wei CHEN;Ying TENG;Wenjie REN;Yongming LUO;Yao YU

作者机构：Key Laboratory of Soil Environment and Pollution RemediationInstitute of Soil ScienceChinese Academy of SciencesNanjing 210018(China) Institute of Agricultural Resources and EnvironmentJiangsu Academy of Agricultural SciencesNanjing 210014(China) School of Resources and Environmental EngineeringHefei University of TechnologyHefei 230009(China) 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2022年第32卷第5期

页      面：673-685页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 07[理学] 08[工学] 0828[工学-农业工程] 09[农学] 0903[农学-农业资源与环境] 120405[管理学-土地资源管理] 0713[理学-生态学] 

基　　金：funded by the National Key R&D Program of China(2019YFC1803705) the Projects of the National Natural Science Foundation of China(41991335and 42130718) the Key Research Program of Frontier Sciences,Chinese Academy of Sciences(QYZDJ-SSWDQC035) 

主　　题：bacterial inoculation benzo[a]pyrene bioremediation organic contaminant paddy soil Paracoccus aminovorans pyrene red soil 

摘      要：Bioaugmentation is an efficient and eco-friendly strategy for the bioremediation of polycyclic aromatic hydrocarbons(PAHs).Since the degrading abilities of soils can greatly alter the abilities of PAH-degrading bacteria,illustrating the potential and mechanism of highly efficient degrading bacteria in different soil environments is of great importance for bioremediation.A PAH-degrading bacterium,Paracoccus aminovorans HPD-2,and two soil types,red and paddy soils,with distinct PAH-degrading abilities,were selected for this study.A soil microcosm experiment was performed by adding pyrene(PYR)and benzo[a]pyrene(B[a]P).Illumina sequencing was used to examine bacterial community *** results showed that inoculation with HPD-2 significantly elevated PYR and B[a]P degradation rates by 44.7%and 30.7%,respectively,in the red soil,while it only improved the degradation rates by 1.9%and 11%,respectively,in the paddy *** investigate the underlying mechanism,the fate of strain HPD-2 and the response of the indigenous bacterial communities were *** HPD-2 occupied certain niches in both soils,and the addition of the bacterium changed the native community structure more noticeably in the red soil than in the paddy *** addition of PAHs and strain HPD-2 significantly changed the abundances of 7 phyla among the 15 detected phyla in the red *** the paddy soil,5 of the 12 dominant phyla were significantly affected by PAHs and the inoculation of HPD-2,while 6new phyla were detected in the low-abundance phyla(0.1%).The abundances of Massilia,Burkholderia,and Rhodococcus genera with PAH degradation efficiency were significantly increased by the inoculation of HPD-2 in the red soil during 42 d of ***,in the paddy soil,the most dominant effective genus,Massilia,was reduced by HPD-2 *** research revealed the remediation ability and inherent mechanism of the highly effective PAH-degrading strain HPD-2 in two different soil type