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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.1
- 수록면
- 829 - 835 (7page)
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초록· 키워드
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Background 2,4-Dinitrophenol (2,4-DNP) is an important organic environmental pollutant that is highly toxic to all forms of living organisms. A gram-positive strain (designated XM24D) was isolated from 2,4-DNP-contaminated soil by an enrichment technique. Objective The study was designed to analyze the ability of XM24D to degrade 2,4-DNP and its analogs and to reveal the degradation pathways of these aromatic compounds. Methods The degradation ability of XM24D was tested by a growth experiment. 2,4-DNP and its analog degradation pathways were predicted by genome and comparative transcriptome sequencing. Results Growth profiles showed that XM24D was able to utilize 2,4-DNP as the sole source of carbon, nitrogen and energy. Analogs of 2,4-DNP, including 4-nitrophenol (PNP) and 2-chloro-4-nitrophenol (2C4NP), can also be degraded by XM24D. Genome analysis showed that the XM24D genome contains two chromosomes with a combined size of 9.08 Mb and an average GC content of 67.07 %. Average nucleotide identity analysis indicated that Rhodococcus imtechensis RKJ300 is the most closely related strain to XM24D. Comparative transcriptome analysis revealed that the 2,4-DNP/PNP/2C4NP degradation pathway in XM24D is highly similar in sequence and organization to the 2,4-DNP degradation pathway in Rhodococcus opacus HL PM-1, the PNP degradation pathway in Rhodococcus opacus SAO101 and the 2C4NP degradation pathway in Rhodococcus imtechensis RKJ300. These results suggested that 2,4-DNP/PNP/2C4NP was degraded via the 2,4-dinitrocyclohexanone/4-nitrocatechol/hydroxyquinol pathway in XM24D. Conclusions Genomic and transcriptomic information on XM24D provides a valuable reference for further investigating the evolutionary characteristics of nitrophenol degradation pathways in microorganisms.
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참고문헌 (20)
참고문헌 신청
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Badeen C / 2011 / Thermal hazard assessment of nitrobenzene/dinitrobenzene mixtures / J Hazard Mater 188:52~57
Chun J / 2018 / Proposed minimal standards for the use of genome data for the taxonomy of prokaryotes / Int J Syst Evol MicroBiol 68:461~466
Conesa A / 2005 / Blast2GO : a universal tool for annotation, visualization and analysis in functional genomics research / Bioinformatics 21:3674~3676
Delcher AL / 2007 / Identifying bacterial genes and endosymbiont DNA with Glimmer / Bioinformatics 23:673~679
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