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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제20권 제5호
- 발행연도
- 2010.1
- 수록면
- 862 - 870 (9page)
이용수
초록· 키워드
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Cyperus rotundus L. is a perennial herb that was found to be dominating an area in northeast Brazil previously contaminated with petroleum. In order to increase our knowledge of microorganism-plant interactions in phytoremediation, the bacterial community present in the rhizosphere and roots of C. rotundus was evaluated by culture-dependent and molecular approaches. PCR-DGGE analysis based on the 16S rRNA gene showed that the bacterial community in bulk soil, rhizosphere, and root samples had a high degree of similarity. A complex population of alkane-utilizing bacteria and a variable nitrogen-fixing population were observed via PCR-DGGE analysis of alkB and nifH genes, respectively. In addition,two clone libraries were generated from alkB fragments obtained by PCR of bulk and rhizosphere soil DNA samples. Statistical analyses of these libraries showed that the compositions of their respective populations were different in terms of alkB gene sequences. Using culturedependent techniques, 209 bacterial strains were isolated from the rhizosphere and rhizoplane/roots of C. rotundus.
Dot-blot analysis showed that 17 strains contained both alkB and nifH gene sequences. Partial 16S rRNA gene sequencing revealed that these strains are affiliated with the genera Bosea, Cupriavidus, Enterobacter, Gordonia,Mycoplana, Pandoraea, Pseudomonas, Rhizobium, and Rhodococcus. These isolates can be considered to have great potential for the phytoremediation of soil with C.
rotundus in this tropical soil area.
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참고문헌 (22)
참고문헌 신청
Arenskotter, M / 2004 / Biology of the metabolically diverse genus Gordonia / Appl. Environ. Microbiol 70 : 3195 ~ 3204
Caballero-Mellado, J / 2007 / The tomato rhizosphere, an environment rich in nitrogen-fixing Burkholderia species with capabilities of interest for agriculture and bioremedia
Chaintreuil, C / 2000 / Photosynthetic bradyrhizobia are natural endophytes of the African wild rice Oryza breviligulata / Appl. Environ. Microbiol 66 : 5437 ~ 5447
Chen, B / 2005 / Metal concentrations and mycorrhizal status of plants colonizing copper mine tailings: Potential for revegetation / Sci. China 48 : 156 ~ 164
Chenier, M. R / 2003 / Impact of seasonal variations and nutrient inputs on the cycling of nitrogen and the degradation of hexadecane by replicated river biofilms / Appl. Env
Caballero-Mellado, J / 2007 / The tomato rhizosphere, an environment rich in nitrogen-fixing Burkholderia species with capabilities of interest for agriculture and bioremedia
Chaintreuil, C / 2000 / Photosynthetic bradyrhizobia are natural endophytes of the African wild rice Oryza breviligulata / Appl. Environ. Microbiol 66 : 5437 ~ 5447
Chen, B / 2005 / Metal concentrations and mycorrhizal status of plants colonizing copper mine tailings: Potential for revegetation / Sci. China 48 : 156 ~ 164
Chenier, M. R / 2003 / Impact of seasonal variations and nutrient inputs on the cycling of nitrogen and the degradation of hexadecane by replicated river biofilms / Appl. Env
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