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Temperature-dependent differences in community structure of bacteria involved in degradation of petroleum hydrocarbons under sulfate-reducing conditions

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Title: Temperature-dependent differences in community structure of bacteria involved in degradation of petroleum hydrocarbons under sulfate-reducing conditions
Authors: Higashioka, Yuriko Browse this author
Kojima, Hisaya Browse this author →KAKEN DB
Fukui, Manabu Browse this author
Keywords: anaerobic biodegradation
bamA gene
low temperature
petroleum hydrocarbon
sulfate-reducing bacteria
Issue Date: Jan-2011
Publisher: Blackwell Publishing
Journal Title: Journal of Applied Microbiology
Volume: 110
Issue: 1
Start Page: 314
End Page: 322
Publisher DOI: 10.1111/j.1365-2672.2010.04886.x
PMID: 21059160
Abstract: Aim: To characterize the microbial community involved in anaerobic degradation of petroleum hydrocarbon under low and moderate temperature conditions. Methods and Results: Sulfate-reducing enrichment cultures growing on crude oil and p-xylene were established at low and moderate temperatures. Bacterial community structures of the cultures were characterized by 16S rRNA gene-based analysis, and organisms responsible for degradation of p-xylene were investigated by analysis of the bamA gene, involved in anaerobic degradation of aromatic compounds. The PCR-denaturing gradient gel electrophoresis analysis indicated significant differences in microbial community structures among the cultures, depending on the temperatures of incubation. Difference depending on the temperatures was also observed in the cloning analysis of the bamA gene performed on the p-xylene-degrading enrichment cultures. Majority of clones detected in the culture of moderate temperature were related to Desulfosarcina ovata, whereas more diverse bamA gene sequences were obtained from the culture incubated at low temperature. Conclusions: Temperature-dependent differences in microbial community were demonstrated by the analyses of two genes. It was suggested that sulfate-reducing bacteria of phylogenetically different groups might be involved in the degradation of petroleum hydrocarbons in different temperature environments. Significance and Impact of the Study: The present study is the first report of p-xylene-degrading sulfate-reducing enrichment culture at low temperature. The results of the experiments at low temperature were distinctly different from those reported in previous studies performed at moderate temperatures.
Rights: The definitive version is available at
Type: article (author version)
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小島 久弥

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