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Torii T, Erséus C, Martinsson S, Ito M. Morphological and Genetic Characterization of the First Species of Thalassodrilides (Annelida: Clitellata: Naididae: Limnodriloidinae) from Japan. ACTA ACUST UNITED AC 2016. [DOI: 10.12782/sd.21.2.117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
| | - Christer Erséus
- University of Gothenburg, Department of Biological and Environmental Sciences
| | - Svante Martinsson
- University of Gothenburg, Department of Biological and Environmental Sciences
| | - Mana Ito
- National Research Institute of Fisheries and Environment of Inland Sea, Fisheries Research Agency
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Lazorchak JM, Hill BH, Brown BS, McCormick FH, Engle V, Lattier DJ, Bagley MJ, Griffith MB, Maciorowski AF, Toth GP. Chapter 23 USEPA biomonitoring and bioindicator concepts needed to evaluate the biological integrity of aquatic systems. TRACE METALS AND OTHER CONTAMINANTS IN THE ENVIRONMENT 2003. [DOI: 10.1016/s0927-5215(03)80153-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Iwamoto T, Tani K, Nakamura K, Suzuki Y, Kitagawa M, Eguchi M, Nasu M. Monitoring impact of in situ biostimulation treatment on groundwater bacterial community by DGGE. FEMS Microbiol Ecol 2000; 32:129-141. [PMID: 10817866 DOI: 10.1111/j.1574-6941.2000.tb00707.x] [Citation(s) in RCA: 169] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Changes in bacterial diversity during the field experiment on biostimulation were monitored by denaturing gradient gel electrophoresis (DGGE) analysis of PCR-amplified 16S rDNA fragments. The results revealed that the bacterial community was disturbed after the start of treatment, continued to change for 45 days or 60 days and then formed a relatively stable community different from the original community structure. DGGE analysis of soluble methane monooxygenase (sMMO) hydroxylase gene fragments, mmoX, was performed to monitor the shifts in the numerically dominant sMMO-containing methanotrophs during the field experiment. Sequence analysis on the mmoX gene fragments from the DGGE bands implied that the biostimulation treatment caused a shift of potential dominant sMMO-containing methanotrophs from type I methanotrophs to type II methanotrophs.
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Affiliation(s)
- T Iwamoto
- Environmental Science and Microbiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamada-oka, Suita, Osaka, Japan
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Hill BH, Herlihy AT, Kaufmann PR, Stevenson RJ, McCormick FH, Johnson CB. Use of periphyton assemblage data as an index of biotic integrity. ACTA ACUST UNITED AC 2000. [DOI: 10.2307/1468281] [Citation(s) in RCA: 185] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- B. H. Hill
- National Exposure Research Laboratory, US Environmental Protection Agency, 26 W. Martin Luther King Drive, Cincinnati, Ohio 45268 USA
| | - A. T. Herlihy
- Department of Fisheries and Wildlife, Oregon State University, ℅ US Environmental Protection Agency, 200 SW 35th Street, Corvallis, Oregon 97333 USA
| | - P. R. Kaufmann
- Department of Fisheries and Wildlife, Oregon State University, ℅ US Environmental Protection Agency, 200 SW 35th Street, Corvallis, Oregon 97333 USA
| | - R. J. Stevenson
- Department of Biology, University of Louisville, Louisville, Kentucky 40292 USA
| | - F. H. McCormick
- National Exposure Research Laboratory, US Environmental Protection Agency, 26 W. Martin Luther King Drive, Cincinnati, Ohio 45268 USA
| | - C. Burch Johnson
- OAO Corporation, ℅ US Environmental Protection Agency, 200 SW 35th Street, Corvallis, Oregon 97333 USA
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5
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Sanseverino J, Werner C, Fleming J, Applegate B, King JM, Sayler GS. Molecular diagnostics of polycyclic aromatic hydrocarbon biodegradation in manufactured gas plant soils. Biodegradation 1994; 4:303-21. [PMID: 7516749 DOI: 10.1007/bf00695976] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Traditional methods for quantifying specific catabolic bacterial populations underestimate the true population count due to the limitations of the necessary laboratory cultivation methods. Likewise, in situ activity is also difficult to assess in the laboratory without altering the sample environment. To circumvent these problems and achieve a true in situ bacterial population count and activity measurement, new methods based on molecular biological analysis of bacterial nucleic acids were applied to soils heavily contaminated with polycyclic aromatic hydrocarbons (PAH). In addition, a naphthalene-lux reporter system was used to determine bioavailability of naphthalene within these soils. DNA extracted from seven PAH-contaminated soils and hybridized with the nahA gene probe indicated that the naphthalene degradative genes were present in all samples in the range of 0.06 to 0.95 ng/100 microliters DNA extract which was calculated to represent 3.2 x 10(6) to 1.1 x 10(10) cells/g soil (assuming one copy of these genes per cell). 14C-naphthalene mineralization was observed in all contaminated soils with 14CO2 mineralization rates ranging from 3.2 x 10(-5) to 304,920.0 x 10(-5) micrograms g soil-1 h-1. Phenanthrene, anthracene, and benzo(a)pyrene were mineralized also in several soils. Messenger RNA transcripts of nahA were isolated and quantified from 4 soils. Only one soil tested, soil B, was inducible with salicylate above the in situ nahA gene transcript level. Two of the soils, C and G, were already fully induced in situ. The naphthalene mineralization rate correlated positively with the amount of nahA gene transcripts present (r = 0.99). Naphthalene was bioavailable in soils A, D, E, G, and N as determined by a bioluminescent response from the naphthalene-lux reporter system. Taken together, these data provided information on what the naphthalene-degrading bacterial population was experiencing in situ and what approaches would be necessary to increase activity.
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Affiliation(s)
- J Sanseverino
- Center for Environmental Biotechnology, University of Tennessee, Knoxville 37932
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6
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Moore RC, Blackburn JW, Bienkowski PR, Sayler GS. Bioreactor sensors based on nucleic acid hybridization reactions. Scientific note. Appl Biochem Biotechnol 1988; 17:325-34. [PMID: 3415219 DOI: 10.1007/bf02779167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- R C Moore
- Department of Chemical Engineering, University of Tennessee, Knoxville 37996
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Koepfler ET, Kator HI. Ecotoxicological effects of creosote contamination on benthic microbial populations in an estuarine environment†. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/tox.2540010407] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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8
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Mallory LM, Sayler GS. Application of FAME (fatty acid methyl ester) analysis in the numerical taxonomic determination of bacterial guild structure. MICROBIAL ECOLOGY 1984; 10:283-296. [PMID: 24221149 DOI: 10.1007/bf02010941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Comparative numerical taxonomic analyses, using fatty acid methyl ester (FAME) profiles and phenetic characteristics, were conducted to examine bacterial guild structure in freshwater sediments. Both approaches were used to examine a subset of 60 OTUs obtained from a previously well characterized microbial community in sediments of a shallow fast flowing stream. For both classifications, greater than 80% of the OTUs were recovered in 11 and 12 major groups for FAME and phenetics approaches. However, there was not complete correspondence for the groupings of the 2 classifications, with most FAME groups being distributed among the phenetic groups and 2 phenetic groups not providing usable characteristics for FAME analysis. The results did demonstrate significant taxonomic variation in bacteria capable of occupying the same or a similar fundamental niche.
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Affiliation(s)
- L M Mallory
- Department of Microbiology and the Graduate Program in Ecology, The University of Tennessee, 37996, Knoxville, Tennessee, USA
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Sayler GS, Breen A, Blackburn JW, Yagi O. Predictive assessment of priority pollutant bio-oxidation kinetics in activated sludge. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/ep.670030305] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Barnhart CL, Vestal JR. Effects of Environmental Toxicants on Metabolic Activity of Natural Microbial Communities. Appl Environ Microbiol 1983; 46:970-7. [PMID: 16346432 PMCID: PMC239506 DOI: 10.1128/aem.46.5.970-977.1983] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Two methods of measuring microbial activity were used to study the effects of toxicants on natural microbial communities. The methods were compared for suitability for toxicity testing, sensitivity, and adaptability to field applications. This study included measurements of the incorporation of
14
C-labeled acetate into microbial lipids and microbial glucosidase activity. Activities were measured per unit biomass, determined as lipid phosphate. The effects of various organic and inorganic toxicants on various natural microbial communities were studied. Both methods were useful in detecting toxicity, and their comparative sensitivities varied with the system studied. In one system, the methods showed approximately the same sensitivities in testing the effects of metals, but the acetate incorporation method was more sensitive in detecting the toxicity of organic compounds. The incorporation method was used to study the effects of a point source of pollution on the microbiota of a receiving stream. Toxic doses were found to be two orders of magnitude higher in sediments than in water taken from the same site, indicating chelation or adsorption of the toxicant by the sediment. The microbiota taken from below a point source outfall was 2 to 100 times more resistant to the toxicants tested than was that taken from above the outfall. Downstream filtrates in most cases had an inhibitory effect on the natural microbiota taken from above the pollution source. The microbial methods were compared with commonly used bioassay methods, using higher organisms, and were found to be similar in ability to detect comparative toxicities of compounds, but were less sensitive than methods which use standard media because of the influences of environmental factors.
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Affiliation(s)
- C L Barnhart
- Department of Biological Sciences, University of Cincinnati, Cincinnati, Ohio 45221
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Sayler GS, Perkins RE, Sherrill TW, Perkins BK, Reid MC, Shields MS, Kong HL, Davis JW. Microcosm and Experimental Pond Evaluation of Microbial Community Response to Synthetic Oil Contamination in Freshwater Sediments. Appl Environ Microbiol 1983; 46:211-9. [PMID: 16346341 PMCID: PMC239290 DOI: 10.1128/aem.46.1.211-219.1983] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A multivariate approach was used to evaluate the significance of synthetic oil-induced perturbations in the functional activity of sediment microbial communities. Total viable cell densities, ATP-biomass, alkaline phosphatase and dehydrogenase activity, and mineralization rates of glucose, protein, oleic acid, starch, naphthalene, and phenanthrene were monitored on a periodic basis in microcosms and experimental ponds for 11 months, both before and after exposure to synthetic oil. All variables contributed to significant discrimination between sediment microbial responses in control communities and communities exposed to a gradient of synthetic oil contamination. At high synthetic oil concentrations (4,000 ml/12 m
3
), a transient reduction in sediment ATP concentrations and increased rates of oleic acid mineralization were demonstrated within 1 week of exposure. These transient effects were followed within 1 month by a significant increase in rates of naphthalene and phenanthrene mineralization. After initial construction, both control and synthetic oil-exposed microbial communities demonstrated wide variability in community activity. All experimental microbial communities approached equilibrium and demonstrated good replication. However, synthetic oil perturbation was demonstrated by wide transient variability in community activity. This variability was primarily the result of the stimulation of polyaromatic hydrocarbon mineralization rates. In general, microcosms and pond communities demonstrated sufficient resiliency to recover from the effects of synthetic oil exposure within 3 months, although polyaromatic hydrocarbon mineralization rates remained significantly elevated.
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Affiliation(s)
- G S Sayler
- Department of Microbiology and The Graduate Program in Ecology, The University of Tennessee, Knoxville, Tennessee 37996
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