Toxicity of diatom polyunsaturated aldehydes to marine bacterial isolates reveals their mode of action.


:Diatoms produce and release polyunsaturated aldehydes (PUAs) during senescence in culture and at the end of blooms in nature and these compounds play different ecological roles, as infochemicals, allelochemicals and pheromones In order to elucidate the toxic effects of PUAs, we isolated six bacterial strains from the Mediterranean Sea during a diatom bloom and tested their tolerance to PUA in terms of growth and cell membrane properties. Based upon 16S rRNA sequencing, these bacteria were assigned to the genera Pseudomonas, Sufflavibacter, Halomonas, Vibrio, Idiomarina, and Labrenzia. Growth of these strains was reduced by 50% (EC50) at PUA concentrations ranging from 600 to 1700 μM of 2E,4E/Z-heptadienal (HEPTA), 400-800 μM of 2E, 4E/Z-octadienal (OCTA), and 70-400 μM of 2E, 4E/Z-decadienal (DECA). Two of these strains, Vibrio sp. and Halomonas, sp. were also investigated for membrane fatty acid composition in terms of adaptive modifications of their degree of saturation (ratio between saturated and unsaturated fatty acids) by GC-FID. A direct correlation between hydrophobicity and PUA toxicity was observed, and these bacteria were also found to react to PUAs by increasing the degree of saturation of their membranes fatty acids. Tested PUAs were 4-fold more toxic than the well-investigated n-alkanols, most probably due to their additional chemical aldehyde toxicity to disrupting proteins by the formation of Schiff's bases, and therefore, they act as very toxic and effective poison, probably accumulating in cytoplasmic membranes because of their high hydrophobicity.






Pepi M,Heipieper HJ,Balestra C,Borra M,Biffali E,Casotti R




Has Abstract


2017-06-01 00:00:00












  • Human health perspectives on environmental exposure to benzidine: a review.

    abstract::Benzidine, an odorless, white to slightly reddish-white crystalline organic compound, is an environmental contaminant that has been identified at about 30 National Priorities List (NPL) hazardous waste sites in the United States. In the environment, it is usually found attached to suspended particles either in its "fr...


    pub_type: 杂志文章,评审


    authors: Choudhary G

    更新日期:1996-01-01 00:00:00

  • Spectroscopic characterization of dissolved organic matter and its interactions with metals in surface waters using size exclusion chromatography.

    abstract::HPLC-size exclusion chromatography (SEC), coupled with on-line detection of UV absorbance (UVA) and fluorescence, was used to characterize dissolved organic matter (DOM) and its interactions with dissolved metals in a forest stream, a reservoir, and an urban river. Optimization of eluent concentration (20 mM) allowed ...


    pub_type: 杂志文章


    authors: Park JH

    更新日期:2009-10-01 00:00:00

  • Assessment of leachates from reactive fire-retardant coatings by chemical analysis and ecotoxicity testing.

    abstract::The environmental compatibility of reactive fire-retardant coatings (intumescent paints) was investigated by a combination of leaching and ecotoxicological tests. Three representative fire-retardant coating systems were tested using two leaching procedures: "Horizontal Dynamic Surface Leaching Test" (DSLT) and the "In...


    pub_type: 杂志文章


    authors: Heisterkamp I,Gartiser S,Kalbe U,Bandow N,Gloßmann A

    更新日期:2019-07-01 00:00:00

  • Identification of oxidative coupling products of xylenols arising from laboratory-scale phytoremediation.

    abstract::Oxidative coupling reactions take place during the passage of xylenols through a laboratory-scale helophyte-based constructed wetland system. Typical coupling product groups including tetramethyl-[1,1'-biphenyl] diols and tetramethyl diphenylether monools as stable organic intermediates could be identified by a combin...


    pub_type: 杂志文章


    authors: Poerschmann J,Schultze-Nobre L,Ebert RU,Górecki T

    更新日期:2015-01-01 00:00:00

  • Use of a lux-marked rhizobacterium as a biosensor to assess changes in rhizosphere C flow due to pollutant stress.

    abstract::The flow of carbon from plant roots into soil supports a range of microbial processes and is therefore critical to ecosystem function and health. Pollution-induced stress, which influences rhizosphere C flow is of considerable potential importance, and therefore needs to be evaluated. This paper reports on a method, b...


    pub_type: 杂志文章


    authors: Porteous F,Killham K,Meharg A

    更新日期:2000-11-01 00:00:00

  • The arbuscular mycorrhizal fungus Glomus mosseae induces growth and metal accumulation changes in Cannabis sativa L.

    abstract::The effect of arbuscular mycorrhiza on heavy metal uptake and translocation was investigated in Cannabis sativa. Hemp was grown in the presence and absence of 100 microg g-1 Cd and Ni and 300 microg g-1 Cr(VI), and inoculated or not with the arbuscular mycorrhizal fungus Glomus mosseae. In our experimental condition, ...


    pub_type: 杂志文章


    authors: Citterio S,Prato N,Fumagalli P,Aina R,Massa N,Santagostino A,Sgorbati S,Berta G

    更新日期:2005-03-01 00:00:00

  • Assessment of foliar dust deposition and elemental concentrations in foliar dust and long rows of grand tamarind leaves along two major roads of Coimbatore, India.

    abstract::In this study, the concentration of foliar dust and 23 elemental concentrations in foliar dust and foliar tissues were studied using long rows of grand tamarind trees grown in two major roads in Coimbatore, India. Twenty-four sampling sites were chosen and categorized as urban (n = 5), suburban (n = 14), and rural (n ...


    pub_type: 杂志文章


    authors: Subpiramaniyam S,Boovaragamoorthy GM,Kaliannan T,Krishna K,Hong SC,Yi PI,Jang SH,Suh JM

    更新日期:2021-02-01 00:00:00

  • Assessment of potentially toxic metal contamination in the soils of a legacy mine site in Central Victoria, Australia.

    abstract::The environmental impact of toxic metal contamination from legacy mining activities, many of which had operated and were closed prior to the enforcement of robust environmental legislation, is of growing concern to modern society. We have carried out analysis of As and potentially toxic metals (Cd, Co, Cr, Cu, Hg, Mn,...


    pub_type: 杂志文章


    authors: Abraham J,Dowling K,Florentine S

    更新日期:2018-02-01 00:00:00

  • Evaluation of antimicrobial agents for veterinary use in the ecotoxicity test using microalgae.

    abstract::The influence of antimicrobial agents approved as veterinary drugs in Japan on the growth of green algae, Selenastrum capricornutum and Chlorella vulgaris, was studied in accordance with the OECD guidelines for testing chemicals. Among the agents tested, growth inhibitory activity was very varied, i.e. erythromycin sh...


    pub_type: 杂志文章


    authors: Eguchi K,Nagase H,Ozawa M,Endoh YS,Goto K,Hirata K,Miyamoto K,Yoshimura H

    更新日期:2004-12-01 00:00:00

  • Perfluoroalkyl acids, hyperuricemia and gout in adults: Analyses of NHANES 2009-2014.

    abstract:BACKGROUND:Previous studies have reported a positive association of perfluoralkyl acids (PFAAs), including perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), with hyperuricemia. The objective of the study is to investigate whether there is an association between concurrent serum levels of several PFAAs...


    pub_type: 杂志文章


    authors: Scinicariello F,Buser MC,Balluz L,Gehle K,Murray HE,Abadin HG,Attanasio R

    更新日期:2020-11-01 00:00:00

  • Methane and carbon dioxide emissions from closed landfill in Taiwan.

    abstract::The atmospheric concentrations and emission rates of CH(4) and CO(2) were studied at three sites of the Fu-Der-Kan closed landfill and after as the multi-use recreational park in northern Taiwan. Atmospheric CH(4) and CO(2) concentrations of closed landfill were 1.7-4.6 and 324-409ppm, respectively. CH(4) and CO(2) em...


    pub_type: 杂志文章


    authors: Chen IC,Hegde U,Chang CH,Yang SS

    更新日期:2008-02-01 00:00:00

  • Effects of methomyl on steroidogenic gene transcription of the hypothalamic-pituitary-gonad-liver axis in male tilapia.

    abstract::Male tilapia were exposed to sub-lethal methomyl concentrations of 0, 0.2, 2, 20 or 200 μg/L for 30 d, and were subsequently cultured in methomyl-free water for 18 d. Relative transcript abundance of steroidogenic genes involved in the HPGL axis of male tilapia was examined at 30 d in the exposure test and at 18 d in ...


    pub_type: 杂志文章


    authors: Meng S,Qiu L,Hu G,Fan L,Song C,Zheng Y,Wu W,Qu J,Li D,Chen J,Xu P

    更新日期:2016-12-01 00:00:00

  • Application of colloidal gas aphron suspensions produced from Sapindus mukorossi for arsenic removal from contaminated soil.

    abstract::Colloidal gas aphron dispersions (CGAs) can be described as a system of microbubbles suspended homogenously in a liquid matrix. This work examines the performance of CGAs in comparison to surfactant solutions for washing low levels of arsenic from an iron rich soil. Sodium Dodecyl Sulfate (SDS) and saponin, a biodegra...


    pub_type: 杂志文章


    authors: Mukhopadhyay S,Mukherjee S,Hashim MA,Sen Gupta B

    更新日期:2015-01-01 00:00:00

  • Kinetics of phenanthrene desorption from activated carbons to water.

    abstract::We determined the kinetics of phenanthrene desorption from three activated carbons to water using Tenax beads as an infinite sink for organic compounds in water. Desorption kinetic data very well fitted a biphasic kinetic model based on the presence of two different adsorption sites, viz. low-energy sites and high-ene...


    pub_type: 杂志文章


    authors: Morelis S,van Noort PC

    更新日期:2008-05-01 00:00:00

  • Intensified nutrients removal in a modified sequencing batch reactor at low temperature: Metagenomic approach reveals the microbial community structure and mechanisms.

    abstract::To achieve efficient biological nutrients removal at low temperature, a modified sequencing batch reactor (SBR) was developed at 10 °C by extending sludge retention time (SRT), shortening aerobic stage and compensating anoxic stage. The average removal rates of ammonium (NH4+-N), total nitrogen (TN) and total phosphor...


    pub_type: 杂志文章


    authors: Huang W,Gong B,He L,Wang Y,Zhou J

    更新日期:2020-04-01 00:00:00

  • Toxicity of two tetracycline antibiotics on Stentor coeruleus and Stylonychia lemnae: Potential use as toxicity indicator.

    abstract::The environmental toxicity of tetracycline antibiotics to aquatic organisms has attracted increasing attention. The adverse impacts of tetracycline antibiotics on ciliates should be detailed considering the significant roles of protozoa in the microfood web in the soils and other eco-systems. This study for the first ...


    pub_type: 杂志文章


    authors: Wang L,Chen Y,Zhao Y,Du M,Wang Y,Fan J,Ren N,Lee DJ

    更新日期:2020-09-01 00:00:00

  • Polybrominated diphenyl ethers and traditional organochlorine pollutants in fulmars (Fulmarus glacialis) from the Faroe Islands.

    abstract::The observed high-level burdens of organohalogens among the residents of the Faroe Islands, needs to be explained. Long-finned pilot whale (Globicephala melas) blubber and meat are known sources of environmental exposure. The present study focus on the organohalogen contamination of the fulmar (Fulmarus glacialis). Th...


    pub_type: 杂志文章


    authors: Fängström B,Athanasiadou M,Athanassiadis I,Bignert A,Grandjean P,Weihe P,Bergman A

    更新日期:2005-08-01 00:00:00

  • Sorption of citalopram, irbesartan and fexofenadine in soils: Estimation of sorption coefficients from soil properties.

    abstract::The sorption of 3 pharmaceuticals, which may exist in 4 different forms depending on the solution pH (irbesartan in cationic, neutral and anionic, fexofenadine in cationic, zwitter-ionic and anionic, and citalopram cationic and neutral), in seven different soils was studied. The measured sorption isotherms were descri...


    pub_type: 杂志文章


    authors: Klement A,Kodešová R,Bauerová M,Golovko O,Kočárek M,Fér M,Koba O,Nikodem A,Grabic R

    更新日期:2018-03-01 00:00:00

  • Soil sterilisation methods for use in OECD 106: How effective are they?

    abstract::Under many circumstances chemical risk assessments for pharmaceuticals and other substances are required to differentiate between 'loss' of a chemical from the aqueous phase as a result of abiotic (sorption or precipitation reactions) or biotic (biodegradation) processes. To distinguish only abiotic processes, it is n...


    pub_type: 杂志文章


    authors: Lees K,Fitzsimons M,Snape J,Tappin A,Comber S

    更新日期:2018-10-01 00:00:00

  • Effect of selenium in soil on the toxicity and uptake of arsenic in rice plant.

    abstract::Selenium can regulate arsenic toxicity by strengthening antioxidant potential, but the antagonism between selenite or selenate nutrient and the translocation of arsenic species from paddy soil to different rice organs are poorly understood. In this study, a pot experiment was designed to investigate the effect of sele...


    pub_type: 杂志文章


    authors: Pokhrel GR,Wang KT,Zhuang H,Wu Y,Chen W,Lan Y,Zhu X,Li Z,Fu F,Yang G

    更新日期:2020-01-01 00:00:00

  • Quantifying the effect of polyacrylamide dosage, Na+ and Ca2+ concentrations, and clay particle size on the flocculation of mature fine tailings with robust statistical methods.

    abstract::Polymer-driven flocculation and dewatering of mature fine tailings (MFT) is critical to improve their consolidation. MFT flocculation and dewatering depends on the size of the suspended clay particles, and on the composition and properties of the liquid in which they are dispersed. The effect of water chemistry on the...


    pub_type: 杂志文章


    authors: Motta FL,Gaikwad R,Botha L,Soares JBP

    更新日期:2018-10-01 00:00:00

  • Enhanced removal of cesium by potassium-starved microalga, Desmodesmus armatus SCK, under photoheterotrophic condition with magnetic separation.

    abstract::This study investigated the feasibility of using photoheterotrophic microalga, Desmodesmus armatus SCK, for removal of cesium (Cs+) followed by recovery process using magnetic nanoparticles. The comparison of three microalgae results indicated that D. armatus SCK removed the most Cs+ at both 25 °C and 10 °C. The resul...


    pub_type: 杂志文章


    authors: Kim I,Choi GG,Nam SW,Yang HM,Park CW,Seo BK,Choi KM,Park SM,Ryu BG

    更新日期:2020-08-01 00:00:00

  • Prediction of joint algal toxicity of nano-CeO2/nano-TiO2 and florfenicol: Independent action surpasses concentration addition.

    abstract::Co-exposure of aquatic organisms to engineered nanoparticles (ENPs) and antibiotics is likely to take place in the environment. However, the impacts of co-exposure on aquatic organisms are virtually unknown and understanding the joint toxicity of ENPs and antibiotics is a topic of importance. The independent action (I...


    pub_type: 杂志文章


    authors: Wang Z,Wang S,Peijnenburg WJGM

    更新日期:2016-08-01 00:00:00

  • Whole effluent toxicity assessment at a wastewater treatment plant upgraded with a full-scale post-ozonation using aquatic key species.

    abstract::Ozonation as final wastewater (WW) polishing step, following conventional activated sludge treatment is increasingly implemented in sewage treatment for contaminant degradation to prevent surface water pollution. While the oxidative degradation of chemicals has been extensively investigated, the in vivo toxicological ...


    pub_type: 杂志文章


    authors: Magdeburg A,Stalter D,Oehlmann J

    更新日期:2012-08-01 00:00:00

  • Effect of electric field on the performance of soil electro-bioremediation with a periodic polarity reversal strategy.

    abstract::In this work, it is studied the effect of the electric fields (within the range 0.0-1.5 V cm(-1)) on the performance of electrobioremediation with polarity reversal, using a bench scale plant with diesel-spiked kaolinite with 14-d long tests. Results obtained show that the periodic changes in the polarity of the elect...


    pub_type: 杂志文章


    authors: Mena E,Villaseñor J,Cañizares P,Rodrigo MA

    更新日期:2016-03-01 00:00:00

  • Selection of performance reference compound (PRC) for passive sampling of pharmaceutical residues in an effluent dominated river.

    abstract::A passive sampling device, a polar organic chemical integrative sampler (POCIS), was used to monitor 13 pharmaceuticals and 8 transformation products in upstream and downstream wastewater treatment plant effluent. A POCIS laboratory calibration study was performed to determine uptake behavior and the effect of water f...


    pub_type: 杂志文章


    authors: Li Y,Yao C,Zha D,Yang W,Lu G

    更新日期:2018-11-01 00:00:00

  • Can the surface modification and/or morphology affect the ecotoxicity of zinc oxide nanomaterials?

    abstract::Among nanomaterials, zinc oxide (ZnO) is notable for its excellent biocidal properties. In particular, it can be incorporated in mortars to prevent biofouling. However, the morphology of these nanomaterials (NMs) and their impact on the action against biofouling are still unknown. This study aimed to assess how the mo...


    pub_type: 杂志文章


    authors: Melegari SP,Fuzinatto CF,Gonçalves RA,Oscar BV,Vicentini DS,Matias WG

    更新日期:2019-06-01 00:00:00

  • Molecular study of concentrated copper pollutant with a compost.

    abstract::Humic substance in compost contains various organic functional groups that can sorb metal ions through ionic force. This study used thermal treatment technology to concentrate copper in the heated residues while destroying the humic substance of copper-sorbed kitchen compost. Scanning electron microscopy (SEM) results...


    pub_type: 杂志文章


    authors: Wei YL,Lee YC,Yang YW,Lee JF

    更新日期:2004-12-01 00:00:00

  • Toxicity of xenobiotics during sulfate, iron, and nitrate reduction in primary sewage sludge suspensions.

    abstract::The effect and persistence of six organic xenobiotics was tested under sulfate-, iron-, and nitrate-reducing conditions in primary sewage sludge suspensions. The xenobiotics tested were acenaphthene, phenanthrene, di(2-ethylhexyl)phthalate (DEHP), 4-nonylphenol (4-NP), linear alkylbenzene sulfonate (LAS), and 1,2,4-tr...


    pub_type: 杂志文章


    authors: Elsgaard L

    更新日期:2010-05-01 00:00:00

  • Assessment of micro and macroplastics along the west coast of India: Abundance, distribution, polymer type and toxicity.

    abstract::Considering the magnitude of pollution caused by marine plastics, the present study assessed their abundance, distribution, surface morphology and polymer type in ten sandy beaches spread across three states (Maharashtra, Karnataka and Goa) along the west coast of India (WCI). The total abundance of plastics (∼1-100 m...


    pub_type: 杂志文章


    authors: Maharana D,Saha M,Dar JY,Rathore C,Sreepada RA,Xu XR,Koongolla JB,Li HX

    更新日期:2020-05-01 00:00:00