Response of bacterial and fungal communities to high petroleum pollution in different soils

Abstract Petroleum pollution of soils is a major environmental problem. Soil microorganisms can decompose a significant fraction of petroleum hydrocarbons in soil at low concentrations (1–5%). This characteristic can be used for soil remediation after oil pollution. Microbial community dynamics and...

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Autores principales:	Polina Galitskaya, Liliya Biktasheva, Sergey Blagodatsky, Svetlana Selivanovskaya
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/daa3830737934e5a89fb7a49859482c3
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spelling	oai:doaj.org-article:daa3830737934e5a89fb7a49859482c32021-12-02T11:46:06ZResponse of bacterial and fungal communities to high petroleum pollution in different soils10.1038/s41598-020-80631-42045-2322https://doaj.org/article/daa3830737934e5a89fb7a49859482c32021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80631-4https://doaj.org/toc/2045-2322Abstract Petroleum pollution of soils is a major environmental problem. Soil microorganisms can decompose a significant fraction of petroleum hydrocarbons in soil at low concentrations (1–5%). This characteristic can be used for soil remediation after oil pollution. Microbial community dynamics and functions are well studied in cases of moderate petroleum pollution, while cases with heavy soil pollution have received much less attention. We studied bacterial and fungal successions in three different soils with high petroleum contents (6 and 25%) in a laboratory experiment. The proportion of aliphatic and aromatic compounds decreased by 4–7% in samples with 6% pollution after 120 days of incubation but remained unchanged in samples with 25% hydrocarbons. The composition of the microbial community changed significantly in all cases. Oil pollution led to an increase in the relative abundance of bacteria such as Actinobacteria and the candidate TM7 phylum (Saccaribacteria) and to a decrease in that of Bacteroidetes. The gene abundance (number of OTUs) of oil-degrading bacteria (Rhodococcus sp., candidate class TM7-3 representative) became dominant in all soil samples, irrespective of the petroleum pollution level and soil type. The fungal communities in unpolluted soil samples differed more significantly than the bacterial communities. Nonmetric multidimensional scaling revealed that in the polluted soil, successions of fungal communities differed between soils, in contrast to bacterial communities. However, these successions showed similar trends: fungi capable of lignin and cellulose decomposition, e.g., from the genera Fusarium and Mortierella, were dominant during the incubation period.Polina GalitskayaLiliya BiktashevaSergey BlagodatskySvetlana SelivanovskayaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-18 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Polina Galitskaya Liliya Biktasheva Sergey Blagodatsky Svetlana Selivanovskaya Response of bacterial and fungal communities to high petroleum pollution in different soils
description	Abstract Petroleum pollution of soils is a major environmental problem. Soil microorganisms can decompose a significant fraction of petroleum hydrocarbons in soil at low concentrations (1–5%). This characteristic can be used for soil remediation after oil pollution. Microbial community dynamics and functions are well studied in cases of moderate petroleum pollution, while cases with heavy soil pollution have received much less attention. We studied bacterial and fungal successions in three different soils with high petroleum contents (6 and 25%) in a laboratory experiment. The proportion of aliphatic and aromatic compounds decreased by 4–7% in samples with 6% pollution after 120 days of incubation but remained unchanged in samples with 25% hydrocarbons. The composition of the microbial community changed significantly in all cases. Oil pollution led to an increase in the relative abundance of bacteria such as Actinobacteria and the candidate TM7 phylum (Saccaribacteria) and to a decrease in that of Bacteroidetes. The gene abundance (number of OTUs) of oil-degrading bacteria (Rhodococcus sp., candidate class TM7-3 representative) became dominant in all soil samples, irrespective of the petroleum pollution level and soil type. The fungal communities in unpolluted soil samples differed more significantly than the bacterial communities. Nonmetric multidimensional scaling revealed that in the polluted soil, successions of fungal communities differed between soils, in contrast to bacterial communities. However, these successions showed similar trends: fungi capable of lignin and cellulose decomposition, e.g., from the genera Fusarium and Mortierella, were dominant during the incubation period.
format	article
author	Polina Galitskaya Liliya Biktasheva Sergey Blagodatsky Svetlana Selivanovskaya
author_facet	Polina Galitskaya Liliya Biktasheva Sergey Blagodatsky Svetlana Selivanovskaya
author_sort	Polina Galitskaya
title	Response of bacterial and fungal communities to high petroleum pollution in different soils
title_short	Response of bacterial and fungal communities to high petroleum pollution in different soils
title_full	Response of bacterial and fungal communities to high petroleum pollution in different soils
title_fullStr	Response of bacterial and fungal communities to high petroleum pollution in different soils
title_full_unstemmed	Response of bacterial and fungal communities to high petroleum pollution in different soils
title_sort	response of bacterial and fungal communities to high petroleum pollution in different soils
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/daa3830737934e5a89fb7a49859482c3
work_keys_str_mv	AT polinagalitskaya responseofbacterialandfungalcommunitiestohighpetroleumpollutionindifferentsoils AT liliyabiktasheva responseofbacterialandfungalcommunitiestohighpetroleumpollutionindifferentsoils AT sergeyblagodatsky responseofbacterialandfungalcommunitiestohighpetroleumpollutionindifferentsoils AT svetlanaselivanovskaya responseofbacterialandfungalcommunitiestohighpetroleumpollutionindifferentsoils
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Response of bacterial and fungal communities to high petroleum pollution in different soils

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