Evidence for Occurrence, Persistence, and Growth Potential of Escherichia coli and Enterococci in Hawaii's Soil Environments
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- Byappanahalli Muruleedhara N.
- U. S. Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station
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- Roll Bruce M.
- University of Hawaii at Manoa, Water Resources Research Center
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- Fujioka Roger S.
- University of Hawaii at Manoa, Water Resources Research Center
書誌事項
- タイトル別名
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- Evidence for Occurrence, Persistence, and Growth Potential of <i>Escherichia coli</i> and Enterococci in Hawaii’s Soil Environments
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High densities of Escherichia coli and enterococci are common in freshwaters on Oahu and other Hawaiian Islands. Soil along stream banks has long been suspected as the likely source of these bacteria; however, the extent of their occurrence and distribution in a wide range of soils remained unknown until the current investigation. Soil samples representing the seven major soil associations were collected on the island of Oahu and analyzed for fecal coliforms, E. coli, and enterococci by the most probable number method. Fecal coliforms, E. coli, and enterococci were found in most of the samples analyzed; log mean densities (MPN ± SE g soil−1) were 1.96±0.18, n=61; 1.21±0.17, n=57; and 2.99±0.12, n=62, respectively. Representative, presumptive cultures of E. coli and enterococci collected from the various soils were identified and further speciated using the API scheme; at least six species of Enterococcus, including Enterococcus faecalis and Enterococcus faecium, were identified. In mesocosm studies, E. coli and enterococci increased by 100-fold in 4 days, after mixing sewage-spiked soil (one part) with autoclaved soil (nine parts). E. coli remained metabolically active in the soil and readily responded to nutrients, as evidenced by increased dehydrogenase activity. Collectively, these findings indicate that populations of E. coli and enterococci are part of the natural soil microflora, potentially influencing the quality of nearby water bodies.<br>
収録刊行物
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- Microbes and environments
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Microbes and environments 27 (2), 164-170, 2012
日本微生物生態学会 / 日本土壌微生物学会 / Taiwan Society of Microbial Ecology / 植物微生物研究会 / 極限環境微生物学会
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詳細情報 詳細情報について
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- CRID
- 1390282679321258496
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- NII論文ID
- 10030431934
- 130001390783
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- NII書誌ID
- AA11551577
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- COI
- 1:STN:280:DC%2BC38jps1Kgug%3D%3D
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- ISSN
- 13474405
- 13426311
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- NDL書誌ID
- 023727725
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- PubMed
- 22791049
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可