0000000000293806

AUTHOR

Emilio De Domenico

showing 4 related works from this author

Bacterial community structure along the subtidal sandy sediment belt of a high Arctic fjord (Kongsfjorden, Svalbard Islands)

2018

Open fjords are subject to contrasting environmental conditions, owing to meltwater glacial inputs, terrestrial runoff, and marine water mass exchanges, which are exacerbated by anthropogenic and climate perturbations. Following a slope-dependent water circulation, the subtidal sandy sediment belt regulates the convergent transport of nutrients downward the fjord depths, and the effective entrapment of suspended particles and microorganisms. In this study, we aimed at testing how glacial and seawater inputs may influence the bacterial community structure of subtidal sand deposits in the Kongsfjorden. Through total and viable cell counting and an amplicon sequencing approach, we found releva…

0301 basic medicineWater massEnvironmental EngineeringFjordmicrobial community compositioncoastal sands03 medical and health sciencesEnvironmental Chemistryta219Glacial periodMeltwaterglacial inputsWaste Management and Disposalgeographygeography.geographical_feature_categoryCommunityion PGM sequencingCommunity structureSedimentGlacierPollution030104 developmental biologyOceanographyCoastal sands Glacial inputs Ion PGM sequencing Microbial community composition Prokaryotic abundance Environmental Engineering Environmental Chemistry Waste Management and Disposal PollutionGeologyprokaryotic abundanceScience of the Total Environment
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Efficiency in hydrocarbon degradation and biosurfactant production by Joostella sp. A8 when grown in pure culture and consortia

2017

Abstract Joostella strains are emerging candidates for biosurfactant production. Here such ability was analyzed for Joostella strain A8 in comparison with Alcanivorax strain A53 and Pseudomonas strain A6, all previously isolated from hydrocarbon enrichment cultures made of polychaete homogenates. In pure cultures Joostella sp. A8 showed the highest stable emulsion percentage (78.33%), hydrophobicity rate (62.67%), and an optimal surface tension reduction during growth in mineral medium supplemented with diesel oil (reduction of about 12 mN/m), thus proving to be highly competitive with Alcanivorax and Pseudomonas strains. During growth in pure culture different level of biodegradation were …

0301 basic medicineEnvironmental EngineeringMicrobial Consortia010501 environmental sciences01 natural sciencesHydrocarbon degradationMicrobiologySurface-Active Agents03 medical and health sciencesEnvironmental ChemistryFood science0105 earth and related environmental sciencesGeneral Environmental Sciencechemistry.chemical_classificationbiologyStrain (chemistry)PseudomonasGeneral MedicineBiodegradationbiology.organism_classificationHydrocarbonsBiodegradation Environmental030104 developmental biologyHydrocarbonchemistryPure cultureEnvironmental PollutantsAlcanivoraxFlavobacteriaceaeJournal of Environmental Sciences
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Enrichment, isolation and biodegradation potential of psychrotolerant polychlorinated-biphenyl degrading bacteria from the Kongsfjorden (Svalbard Isl…

2016

Persistent organic pollutants (POPs), such as polychlorinated biphenyls (PCBs), have been detected in abiotic Arctic matrices: surface sediments and seawater from coastal areas in the Kongsfjorden were collected and analyzed. Levels of PCBs varied depending on the sampling site. Total PCB concentrations were between 11.63 (site C2W) and 27.69 pg l-1 (site AW). These levels were comparable to those reported previously in lake sediments from the northern Svalbard. The occurrence and biodegradation potential of cold-adapted PCB-oxidizing bacteria in seawater and sediment along the fjord was also evaluated. After enrichment with biphenyl, 246 isolates were obtained with 45 of them that were abl…

0301 basic medicineCold-adapted bacteria; Polychlorobiphenyls; Contamination level; Arctic fjord; BiodegradationGeologic Sediments010501 environmental sciencesarctic fjordsOceanography01 natural sciencesSvalbardchemistry.chemical_compoundPolychlorobiphenylsArctic fjordBiphenylgeography.geographical_feature_categorybiologyArctic RegionsEcologyPolychlorinated BiphenylsPollutionAerobiosisBacteria AerobicCold TemperatureBiodegradation EnvironmentalEnvironmental chemistryArctic fjord; Biodegradation; Cold-adapted bacteria; Contamination level; Polychlorobiphenyls; Oceanography; Aquatic Science; PollutionBiodegradationEstuariesWater MicrobiologyDevosiaAroclorsta1172GelidibacterCold-adapted bacteria Polychlorobiphenyls Contamination level Arctic fjord BiodegradationFjordAquatic Science03 medical and health sciencesCold adapted bacteriaSeawaterta2190105 earth and related environmental sciencesgeographyCold-adapted bacteriaPolychlorinated biphenylBiodegradationbiology.organism_classificationContamination level030104 developmental biologychemistryAlgoriphagusSeawaterWater Pollutants Chemical
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Biosurfactant production by hydrocarbon-degradingBrevibacteriumandVibrioisolates from the sea penPteroeides spinosum(Ellis, 1764)

2016

Among filter-feeders, pennatulids are the most complex and polymorphic members of the cnidarian class Anthozoa. They display a wide distribution throughout all the oceans, constituting a significant component of the sessile megafauna from intertidal to abyssal depths. In this study, a total of 118 bacterial isolates from enrichment cultures, carried out with homogenates of the sea pen Pteroeides spinosum (Ellis, 1764), were screened for hydrocarbon utilization by using the 2,6-dichlorophenol indophenol assay. Among them, 83 hydrocarbon-oxidizing isolates were analyzed for biosurfactant production by standard screening tests (i.e., emulsifying activity, E24 detection, surface tension measure…

0301 basic medicinebiologySea pen030106 microbiologyBrevibacteriumGeneral Medicinebiology.organism_classificationIsolation (microbiology)Applied Microbiology and BiotechnologyVibrioMicrobiologySalinity03 medical and health scienceschemistry.chemical_compound030104 developmental biologychemistryAnthozoaIndophenolBacteriaJournal of Basic Microbiology
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