Luminous Bacteria
Mostrando 1-12 de 57 artigos, teses e dissertações.
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1. Ensaios ecotoxicológicos em organismos-teste Daphnia similis e Vibrio fischeri na avaliação de efluentes sanitários aplicados na cultura de eucalipto (Eucaliptus urograndis) / Assays in ecotoxicological organisms Daphnia similis and Vibrio fischeri in the evaluation of wastewater applied in culture of eucalyptus (Eucalyptus urograndis)
O tratamento de esgoto doméstico é de fundamental importância para a manutenção da qualidade dos corpos hídricos e da vida aquática assim como para a conservação dos recursos naturais. Neste foco, os sistemas de tratamento como lagoas de estabilização são largamente utilizados no Brasil para tratamento de efluentes sanitários. O uso de efluente
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/08/2012
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2. Aplicabilidade dos Testes de Toxicidade Aguda com Daphnia magna e Vibro fischeri no monitoramento da qualidade das Ãguas de bacias hidrogrÃficas: Caso do Rio Ipojuca em Pernambuco
The water quality evaluation described by the Resolution NÂ 357/05 of National Council of Environmental (CONAMA), that revoked the NÂ 20/86, established that the Environmental Agencies measured the water quality through physical, chemical, biological analysis and chronic and acute toxicities tests. By these testes is possible to know the toxic effect of su
Publicado em: 2006
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3. Association of Luminous Bacteria with Artificial and Natural Surfaces in Arabian Gulf Seawater
Luminous bacteria in seawater around the islands of Bahrain are predominantly Vibrio harveyi and have the capability to adhere to artificial fibrous surfaces. Phytoplankton did not appear to have any specific relationship with luminous bacteria, but macroalgae were shown to possess an enhanced concentration of luminous bacteria.
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4. Luminous Enteric Bacteria of Marine Fishes: a Study of Their Distribution, Densities, and Dispersion †
Three taxa of luminous bacteria (Photobacterium fischeri, P. phosphoreum, and Beneckea spp.) were found in the enteric microbial populations of 22 species of surface- and midwater-dwelling fishes. These bacteria often occurred in concentrations ranging between 105 and 107 colony-forming units per ml of enteric contents. By using a genetically marked strain,
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5. Distribution and Identification of Luminous Bacteria from the Sargasso Sea
Vibrio fischeri and Lucibacterium harveyi constituted 75 of the 83 luminous bacteria isolated from Sargasso Sea surface waters. Photobacterium leiognathi and Photobacterium phosphoreum constituted the remainder of the isolates. Luminescent bacteria were recovered at concentrations of 1 to 63 cells per 100 ml from water samples collected at depths of 160 to 3
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6. Determination of serum bactericidal activity with the aid of luminous bacteria.
Nonmarine luminous bacteria belonging to the genus Vibrio cholerae were extremely sensitive to the bactericidal activity of human serum. Luminous bacteria incubated in a medium containing serum showed a decrease in their in vivo luminescence that was directly proportional to the decrease in the viable count and was a function of the serum concentration. Both
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7. Planktonic Marine Luminous Bacteria: Species Distribution in the Water Column
Luminous bacteria were isolated from oceanic water samples taken throughout the upper 1,000 m and ranged in density from 0.4 to 30 colony-forming units per 100 ml. Generally, two peaks in abundance were detected: one in the upper 100 m of the water column, which consisted primarily of Beneckea spp.; and a second between 250 and 1,000 m, which consisted almos
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8. Seasonal and Geographic Distribution of Luminous Bacteria in the Eastern Mediterranean Sea and the Gulf of Elat
Luminous bacteria in the Mediterranean Sea and the Gulf of Aqaba-Elat have different distribution patterns. In the Mediterranean Sea, Beneckea harveyi is present all year round, with different subtypes alternating in summer and winter; Photobacterium fischeri was only present during the winter. In the Gulf of Elat, P. leiognathi is present throughout the wat
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9. Genomic and Phylogenetic Characterization of Luminous Bacteria Symbiotic with the Deep-Sea Fish Chlorophthalmus albatrossis (Aulopiformes: Chlorophthalmidae)
Bacteria forming light-organ symbiosis with deep-sea chlorophthalmid fishes (Aulopiformes: Chlorophthalmidae) are considered to belong to the species Photobacterium phosphoreum. The identification of these bacteria as P. phosphoreum, however, was based exclusively on phenotypic traits, which may not discriminate between phenetically similar but evolutionaril
American Society for Microbiology.
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10. Detection of the Light Organ Symbiont, Vibrio fischeri, in Hawaiian Seawater by Using lux Gene Probes †
Symbiotic bacteria that inhabit the light-emitting organ of the Hawaiian squid Euprymna scolopes are distinctive from typical Vibrio fischeri organisms in that they are not visibly luminous when grown in laboratory culture. Therefore, the abundance of these bacteria in seawater samples cannot be estimated simply by identifying them among luminous colonies th
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11. Identification of Vibrio splendidus as a Member of the Planktonic Luminous Bacteria from the Persian Gulf and Kuwait Region with luxA Probes
Hybridization probes specific for the luxA genes of four groups of luminous bacteria were used to screen luminous isolates obtained from the Persian Gulf, near Al Khiran, Kuwait Nine of these isolates were identified as Vibrio harveyi, a commonly encountered planktonic isolate, while three others showed no hybridization to any of the four probes (V. harveyi,
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12. Acridine dyes and other DNA-intercalating agents induce the luminescence system of luminous bacteria and their dark variants.
Acridine dyes and other DNA-intercalating agents such as ethidium bromide, theophylline, and caffeine induce luminescence in dark variants (K variants) different luminous species of bacteria, as well as in their wild-type luminous cells, prior to induction. The increase in luminescence appears 10-20 min after addition of these agents and is inhibited by chlo