Di-(2-ethylhexyl) phthalate (DEHP) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated N2O emissions in an alkaline soil

Phthalic acid esters (PAEs) pollution has become an increasing issue worldwide, but little is known about its effects on ammonia-oxidizers and nitrous oxide (N2O) in the soil environment. Here, a 50-day soil microcosm experiment was conducted using low and high doses bis (2-Ethylhexyl) phthalate (DE...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Rui Tao, Hanjie Zhang, Xiuping Gu, Baowei Hu, Jun Li, Guixin Chu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Nitrous oxide emissions Di-(2-ethylhexyl) phthalate exposure Ammonia oxidizers Microbial biomass Environmental pollution TD172-193.5 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/ad38514220c84b8d87ca174070252a3c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:ad38514220c84b8d87ca174070252a3c
record_format	dspace
spelling	oai:doaj.org-article:ad38514220c84b8d87ca174070252a3c2021-11-06T04:16:47ZDi-(2-ethylhexyl) phthalate (DEHP) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated N2O emissions in an alkaline soil0147-651310.1016/j.ecoenv.2021.112910https://doaj.org/article/ad38514220c84b8d87ca174070252a3c2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0147651321010228https://doaj.org/toc/0147-6513Phthalic acid esters (PAEs) pollution has become an increasing issue worldwide, but little is known about its effects on ammonia-oxidizers and nitrous oxide (N2O) in the soil environment. Here, a 50-day soil microcosm experiment was conducted using low and high doses bis (2-Ethylhexyl) phthalate (DEHP) to estimate the effect of DEHP exposure on soil N2O emissions and the nitrifying community in calcareous soil. The results showed that DEHP exposure at 10 and 100 mg kg-1 doses significantly reduced N2O by 67.5% and 73.6%, respectively, relative to the DEHP absent treatment. The microbial biomass carbon and nitrogen (MBC and MBN) were consistently and significantly decreased with DEHP exposure at 5, 22, and 50 days after incubation, especially with high-dose. The bipartite association networks showed that DEHP exposure changed the compositions of both ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities. Moreover, the AOA and AOB amoA gene abundances were significantly decreased by DEHP addition to the soil (P < 0.05). Random forest modeling showed that the AOB Shannon index and pH were the most important biotic and abiotic factors affecting N2O emissions in the soil with DEHP exposure, respectively. Partial least squares path modeling (PLS-PM) demonstrated that the reduction of N2O emissions due to DEHP exposure was mainly ascribed to the changes of the AOB community. The results from this study highlight the toxicity of DEHP on the ammonia oxidizers, and its mitigating effect on N2O emissions in the soil where ammonia-oxidation is largely driven by AOB.Rui TaoHanjie ZhangXiuping GuBaowei HuJun LiGuixin ChuElsevierarticleNitrous oxide emissionsDi-(2-ethylhexyl) phthalate exposureAmmonia oxidizersMicrobial biomassEnvironmental pollutionTD172-193.5Environmental sciencesGE1-350ENEcotoxicology and Environmental Safety, Vol 227, Iss , Pp 112910- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Nitrous oxide emissions Di-(2-ethylhexyl) phthalate exposure Ammonia oxidizers Microbial biomass Environmental pollution TD172-193.5 Environmental sciences GE1-350
spellingShingle	Nitrous oxide emissions Di-(2-ethylhexyl) phthalate exposure Ammonia oxidizers Microbial biomass Environmental pollution TD172-193.5 Environmental sciences GE1-350 Rui Tao Hanjie Zhang Xiuping Gu Baowei Hu Jun Li Guixin Chu Di-(2-ethylhexyl) phthalate (DEHP) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated N2O emissions in an alkaline soil
description	Phthalic acid esters (PAEs) pollution has become an increasing issue worldwide, but little is known about its effects on ammonia-oxidizers and nitrous oxide (N2O) in the soil environment. Here, a 50-day soil microcosm experiment was conducted using low and high doses bis (2-Ethylhexyl) phthalate (DEHP) to estimate the effect of DEHP exposure on soil N2O emissions and the nitrifying community in calcareous soil. The results showed that DEHP exposure at 10 and 100 mg kg-1 doses significantly reduced N2O by 67.5% and 73.6%, respectively, relative to the DEHP absent treatment. The microbial biomass carbon and nitrogen (MBC and MBN) were consistently and significantly decreased with DEHP exposure at 5, 22, and 50 days after incubation, especially with high-dose. The bipartite association networks showed that DEHP exposure changed the compositions of both ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities. Moreover, the AOA and AOB amoA gene abundances were significantly decreased by DEHP addition to the soil (P < 0.05). Random forest modeling showed that the AOB Shannon index and pH were the most important biotic and abiotic factors affecting N2O emissions in the soil with DEHP exposure, respectively. Partial least squares path modeling (PLS-PM) demonstrated that the reduction of N2O emissions due to DEHP exposure was mainly ascribed to the changes of the AOB community. The results from this study highlight the toxicity of DEHP on the ammonia oxidizers, and its mitigating effect on N2O emissions in the soil where ammonia-oxidation is largely driven by AOB.
format	article
author	Rui Tao Hanjie Zhang Xiuping Gu Baowei Hu Jun Li Guixin Chu
author_facet	Rui Tao Hanjie Zhang Xiuping Gu Baowei Hu Jun Li Guixin Chu
author_sort	Rui Tao
title	Di-(2-ethylhexyl) phthalate (DEHP) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated N2O emissions in an alkaline soil
title_short	Di-(2-ethylhexyl) phthalate (DEHP) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated N2O emissions in an alkaline soil
title_full	Di-(2-ethylhexyl) phthalate (DEHP) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated N2O emissions in an alkaline soil
title_fullStr	Di-(2-ethylhexyl) phthalate (DEHP) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated N2O emissions in an alkaline soil
title_full_unstemmed	Di-(2-ethylhexyl) phthalate (DEHP) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated N2O emissions in an alkaline soil
title_sort	di-(2-ethylhexyl) phthalate (dehp) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated n2o emissions in an alkaline soil
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ad38514220c84b8d87ca174070252a3c
work_keys_str_mv	AT ruitao di2ethylhexylphthalatedehpexposuresuppressedthecommunitydiversityandabundanceofammoniaoxidizersandmitigatedn2oemissionsinanalkalinesoil AT hanjiezhang di2ethylhexylphthalatedehpexposuresuppressedthecommunitydiversityandabundanceofammoniaoxidizersandmitigatedn2oemissionsinanalkalinesoil AT xiupinggu di2ethylhexylphthalatedehpexposuresuppressedthecommunitydiversityandabundanceofammoniaoxidizersandmitigatedn2oemissionsinanalkalinesoil AT baoweihu di2ethylhexylphthalatedehpexposuresuppressedthecommunitydiversityandabundanceofammoniaoxidizersandmitigatedn2oemissionsinanalkalinesoil AT junli di2ethylhexylphthalatedehpexposuresuppressedthecommunitydiversityandabundanceofammoniaoxidizersandmitigatedn2oemissionsinanalkalinesoil AT guixinchu di2ethylhexylphthalatedehpexposuresuppressedthecommunitydiversityandabundanceofammoniaoxidizersandmitigatedn2oemissionsinanalkalinesoil
_version_	1718443935970361344

Di-(2-ethylhexyl) phthalate (DEHP) exposure suppressed the community diversity and abundance of ammonia-oxidizers and mitigated N2O emissions in an alkaline soil

Ejemplares similares