Bacterial community changes in response to oil contamination and perennial crop cultivation

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http://hdl.handle.net/10138/321961

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Yan , L , Penttinen , P , Mikkonen , A & Lindstrom , K 2018 , ' Bacterial community changes in response to oil contamination and perennial crop cultivation ' , Environmental Science and Pollution Research , vol. 25 , no. 15 , pp. 14575-14584 . https://doi.org/10.1007/s11356-018-1635-9

Title: Bacterial community changes in response to oil contamination and perennial crop cultivation
Author: Yan, Lijuan; Penttinen, Petri; Mikkonen, Anu; Lindstrom, Kristina
Contributor: University of Helsinki, Environmental Sciences
University of Helsinki, Environmental Sciences
University of Helsinki, Ecosystems and Environment Research Programme
Date: 2018-05
Language: eng
Number of pages: 10
Belongs to series: Environmental Science and Pollution Research
ISSN: 0944-1344
URI: http://hdl.handle.net/10138/321961
Abstract: We investigated bacterial community dynamics in response to used motor oil contamination and perennial crop cultivation by 16S rRNA gene amplicon sequencing in a 4-year field study. Actinobacteria, Proteobacteria, Chloroflexi, Acidobacteria, and Gemmatimonadetes were the major bacterial phyla, and Rhodococcus was the most abundant genus. Initially, oil contamination decreased the overall bacterial diversity. Actinobacteria, Betaproteobacteria, and Gammaproteobacteria were sensitive to oil contamination, exhibiting clear succession with time. However, bacterial communities changed over time, regardless of oil contamination and crop cultivation. The abundance difference of most OTUs between oil-contaminated and non-contaminated plots remained the same in later sampling years after the initial abundance difference induced by oil spike. The abundances of three oil-favored actinobacteria (Lysinimonas, Microbacteriaceae, and Marmoricola) and one betaproteobacterium (Aquabacterium) changed in different manner over time in oil-contaminated and non-contaminated soil. We propose that these taxa are potential bio-indicators for monitoring recovery from motor oil contamination in boreal soil. The effect of crop cultivation on bacterial communities became significant only after the crops achieved stable growth, likely associated with plant material decomposition by Bacteroidetes, Armatimonadetes and Fibrobacteres.
Subject: Soil microbiome
Hydrocarbon contamination
Bioremediation
Perennial crop cultivation
16S rRNA gene amplicon sequencing
Temporal abundance change
POLYCYCLIC AROMATIC-HYDROCARBONS
SOIL MICROBIAL COMMUNITIES
RHIZOBIUM-GALEGAE SYSTEM
DEGRADING BACTERIA
MOTOR OIL
BOREAL CLIMATE
LAND-USE
SP-NOV.
BIOREMEDIATION
DEGRADATION
1172 Environmental sciences
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