Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이인숙 | * |
dc.contributor.author | 조경숙 | * |
dc.contributor.author | 김재수 | * |
dc.date.accessioned | 2017-02-15T08:02:32Z | - |
dc.date.available | 2017-02-15T08:02:32Z | - |
dc.date.issued | 2006 | * |
dc.identifier.issn | 1093-4529 | * |
dc.identifier.other | OAK-3562 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/234114 | - |
dc.description.abstract | To know microbial activity and diesel-removal efficiency influencing through plant roots, we examined the effect of the rhizosphere on phytoremediation of diesel-contaminated soils by alfalfa (Medicago sativa L.). Pots were treated with and without diesel and allowed to stabilize for 7 weeks, at which time four experimental/control groups were prepared: (1) planted diesel-contaminated soil, (2) unplanted diesel-contaminated soil, (3) planted uncontaminated soil, and (4) unplanted uncontaminated soil. Samples of rhizosphere and bulk soils were separately taken from all planted pots. After 7 weeks of alfalfa growth from seeds, the removal efficiencies in rhizosphere and bulk soil samples were 82.5% and 36.5 59.4%, respectively. The total microbial activity was highest in diesel-contaminated rhizosphere soils. Significantly more culturable soil bacteria and hydrocarbon-degraders were found in diesel-contaminated rhizosphere soil versus unplanted and uncontaminated bulk soil, with a greater increase seen in hydrocarbon-degraders (172-fold) versus general soil bacteria (14-fold). DGGE (Denaturing Gel Gradient Electrophoresis) analysis revealed that the bacterial community structure was most highly influenced by the combined presence of diesel contamination and plant roots (39.13% similarity compared to the control), but that diesel contamination alone had a higher influence (42.31% similarity compared to the control) than the rhizosphere (50.00% similarity compared to the control). Sequence analysis and BLAST searches revealed that all samples were dominated by members of α -, γ -, δ - and ε -proteobacteria, and Chloroflexi. The rhizosphere samples additionally contained novel dominant members of α -proteobacteria and Cytophaga-Flexibacter-Bacteroides, while the diesel samples contained additional dominant α -proteobacteria and the rhizosphere plus diesel samples contained other ε -proteobacteria. Collectively, these findings indicate that the presence of plant roots (i.e., a rhizosphere) had a greater effect on bacterial activity in diesel contamination than did the absence of diesel contamination, whereas diesel contamination had a greater effect on bacterial community structure. These novel findings provide new insight into the mechanisms of phytoremediation. Copyright © Taylor & Francis Group, LLC. | * |
dc.language | English | * |
dc.title | Rhizosphere microbial activity during phytoremediation of diesel-contaminated soil | * |
dc.type | Article | * |
dc.relation.issue | 11 | * |
dc.relation.volume | 41 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 2503 | * |
dc.relation.lastpage | 2516 | * |
dc.relation.journaltitle | Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering | * |
dc.identifier.doi | 10.1080/10934520600927658 | * |
dc.identifier.wosid | WOS:000240750300006 | * |
dc.identifier.scopusid | 2-s2.0-33749005098 | * |
dc.author.google | Kim J. | * |
dc.author.google | Kang S.-H. | * |
dc.author.google | Min K.-A. | * |
dc.author.google | Cho K.-S. | * |
dc.author.google | Lee I.-S. | * |
dc.contributor.scopusid | 이인숙(7404442171;57226385183) | * |
dc.contributor.scopusid | 조경숙(7403957095) | * |
dc.date.modifydate | 20240423081003 | * |