Luminous Bacteria

Dunlap, Paul V.; Urbanczyk, Henryk

doi:10.1007/978-3-642-30141-4_75

Cited by 59 publications

(60 citation statements)

References 320 publications

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“…Moreover, the human impact represented at the three stations can affect bacterial luminescence in vivo. In fact, as reported by Dunlap and Kita-Tsukamoto (2006), the activity of the luminescence system is part of the cellular response to stress associated with nutrient limitation and decreasing growth rate.…”

Section: Discussionmentioning

confidence: 85%

“…They often associate with living and non-living marine organisms and colonize marine animals as saprophytes, commensals, and parasites (Ramesh et al 1990, Abraham and Palaniappan 2004, Liu et al 2004, Dunlap and Kita-Tsukamoto 2006, Stabili et al 2008, Nyholm et al 2009). Certain bioluminescent species have been identified…”

Section: Introductionmentioning

confidence: 99%

“…Frecuentemente se asocian con organismos marinos vivos y no vivos, y colonizan animales marinos como saprófitos, comensales y parásitos (Ramesh et al 1990, Abraham y Palaniappan 2004, Liu et al 2004, Dunlap y KitaTsukamoto 2006, Stabili et al 2008, Nyholm et al 2009). Se han identificado algunas especies bioluminescentes como Phenotypic characterization of culturable marine luminous bacteria isolated from coastal waters of the southern Adriatic Sea (Otranto, Italy) Caracterización fenotípica de bacterias luminosas marinas cultivables aisladas de aguas costeras del sur del mar Adriático (Otranto, Italia) F Bagordo as species-specific symbionts of marine fish and squids, in which they are concentrated in highly specialized lightemitting organs (Nealson and Hastings 1992, Dunlap and Kita-Tsukamoto 2006, Abraham and Palaniappan 2004, Liu et al 2004, Stabili et al 2008, Nyholm et al 2009). The light emission is sensitive to several toxic compounds; therefore, some luminous species are used in eco-toxicological tests to evaluate the quality of water environments (Narracci et al 2008).…”

Section: Introductionmentioning

confidence: 99%

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Phenotypic characterization of culturable marine luminous bacteria isolated from coastal waters of the southern Adriatic Sea (Otranto, Italy)

et al. 2012

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ABSTRACT. To determine the abundance and species composition of luminous bacteria in the coastal waters of the southern Adriatic Sea (Otranto, Italy), samples were collected from three sites affected by different degrees of anthropogenic pollution. A total of 116 strains of marine luminous bacteria were isolated and subjected to phenotypic characterization, which included 36 biochemical tests. Numerical analysis of the data revealed five clusters with > 86% similarity, which were readily identified as Photobacterium leiognathi, Vibrio fischeri, Vibrio harveyi, Vibrio splendidus biovar I, and Shewanella hanedai. The relative abundance of each species shows that culturable luminous bacteria in the monitored waters are composed mainly of V. harveyi (69.0%), followed by V. fischeri (13.8%) and P. leiognathi (12.1%). In addition, human activity appears to affect the total abundance of luminous bacteria but not the selection of individual species, since the frequencies of the bacteria were similar at all examined sites.Key words: luminous bacteria, seawater, phenotypic characterization, coastal waters, heterotrophic bacteria. RESUMEN. Con el fin de determinar la abundancia y composición de especies de bacterias luminosas en aguas costeras del sur del marAdriático (Otranto, Italia), se recolectaron muestras en tres sitios con diferente grado de contaminación antropogénica. Se aislaron 116 cepas de bacterias luminosas marinas y se sometieron a 36 pruebas bioquímicas para su caracterización fenotípica. El análisis numérico de los datos mostró cinco grupos con > 86% de similitud, los cuales fueron identificados como Photobacterium leiognathi, Vibrio fischeri, Vibrio harveyi, Vibrio splendidus biovar I y Shewanella hanedai. La abundancia relativa de cada especie muestra que las bacterias luminosas cultivables en las aguas analizadas consisten principalmente de V. harveyi (69.0%), V. fischeri (13.8%) y P. leiognathi (12.1%). Además, la actividad humana parece afectar la abundancia total de bacterias luminosas pero no la selección de especies individuales, ya que las frecuencias de las bacterias fueron similares en todos los sitios estudiados.Palabras clave: bacterias luminosas, agua marina, caracterización fenotípica, aguas costeras, bacterias heterótrofas.

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Section: Discussionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phenotypic characterization of culturable marine luminous bacteria isolated from coastal waters of the southern Adriatic Sea (Otranto, Italy)

et al. 2012

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“…In this case, both natural selection and neutral evolutionary processes could be the mechanisms that have caused the difference in their evolution. To examine the conservation patterns in Fre and LuxG oxidoreductases, the group of amino acid sequences from confirmed luminous species with available sequenced genomes have been selected . The extracted dataset consists of 14 primary sequences of LuxG, 19 sequences of Fre oxidoreductases and one E. coli Fre.…”

Section: Resultsmentioning

confidence: 99%

“…In bacteria, a bioluminescent reaction is regulated by a set of proteins encoded in lux ‐operon . Two genes, luxA and luxB , code for a bacterial luciferase that is the most studied enzyme playing a major role in the bioluminescent reaction.…”

Section: Introductionmentioning

confidence: 99%

Functional divergence between evolutionary‐related LuxG and Fre oxidoreductases of luminous bacteria

et al. 2019

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In luminous bacteria NAD(P)H:flavin‐oxidoreductases LuxG and Fre, there are homologous enzymes that could provide a luciferase with reduced flavin. Although Fre functions as a housekeeping enzyme, LuxG appears to be a source of reduced flavin for bioluminescence as it is transcribed together with luciferase. This study is aimed at providing the basic conception of Fre and LuxG evolution and revealing the peculiarities of the active site structure resulted from a functional variation within the oxidoreductase family. A phylogenetic analysis has demonstrated that Fre and LuxG oxidoreductases have evolved separately after the gene duplication event, and consequently, they have acquired changes in the conservation of functionally related sites. Namely, different evolutionary rates have been observed at the site responsible for specificity to flavin substrate (Arg 46). Also, Tyr 72 forming a part of a mobile loop involved in FAD binding has been found to be conserved among Fre in contrast to LuxG oxidoreductases. The conservation of different amino acid types in NAD(P)H binding site has been defined for Fre (arginine) and LuxG (proline) oxidoreductases.

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Photobacterium

Labella

Borrego

2023

Bergey's Manual of Systematics of Archaea and Bacteria

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Pho.to.bac.te'ri.um. Gr. neut. n. phôs , light; Gr. neut. dim. n. bakterion , a small rod; N.L. neut. n. Photobacterium , light (‐producing) bacterium. Proteobacteria / Gammaproteobacteria / Vibrionales / Vibrionaceae / Photobacterium The genus Photobacterium contains 37 species with validated names and 3 species whose names have not been validated. Cells are short bacilli Gram‐stain negative, and nonsporulated. Facultatively anaerobic. Require NaCl for growth (optimal concentration 1–3%). Several species present bioluminescence. Some of them are piezophilic and others are psychrophilic. Isolated from marine environment (seawater and sediment), associated with aquatic animals (mutualism relationships), but some are pathogens for poikilothermic and homeothermic animals. DNA G + C content (mol%) : 38.5–53.6. Type species : Photobacterium phosphoreum Beijerinck 1889 AL (basonym: Micrococcus phosphoreus Cohn 1878).

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Luminous Bacteria

Cited by 59 publications

References 320 publications

Phenotypic characterization of culturable marine luminous bacteria isolated from coastal waters of the southern Adriatic Sea (Otranto, Italy)

Phenotypic characterization of culturable marine luminous bacteria isolated from coastal waters of the southern Adriatic Sea (Otranto, Italy)

Functional divergence between evolutionary‐related LuxG and Fre oxidoreductases of luminous bacteria

Photobacterium

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