Influence of Nitrogen Status on the Bioconcentration of Hydrophobic Organic Compounds to Selenastrum capricornutum

Halling-Sørensen, Bent; Nyholm, Niels; Kusk, Kresten Ole; Jacobsson, Eva

doi:10.1006/eesa.1999.1818

Cited by 46 publications

(37 citation statements)

References 37 publications

(42 reference statements)

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“…Gardner et al (1985) further developed microextraction techniques to deal with tissue samples weighing less than 10 mg. A summary of the total lipid content, on a dry or wet weight basis, of aquatic organisms is presented in Table 2. Mussel 0.6-3.9 (w) Bedford and Zabik (1973); Booij and van den Berg (1994) Copeman and Parrish (2004); Ernst (1979), King et al (1990) Lin et al (2003; Murphy et al (2002); Pirini et al (2000) Renberg et al (1978); Serrano et al (1997a) Oyster 1.5-2.8 (w) King et al (1990 Lalah et al (2003); Legierse et al (1998); Takimoto et al (1987a) Thybaud and Caquet (1991) Green alga 10-45 (d) Borowitzka (1988); Canton et al (1977); Choi et al (1987) Halling-Sørensen et al (2000; Kent and Currie (1995) Koelmans and Sánchez Jiménez (1994); Rathore et al (1993); Stange and Swackhamer (1994) Blue-green alga 2.2-22 (d) Borowitzka (1988); Rathore et al (1993) Stange and Swackhamer (1994); Sukhija et al (1979) Dembitsky et al (1992); Gobas et al (1991) Water flea 5.5-23 (d), 0.3-2.0 (w) Bychek and Gushchina (1999); Cowgill et al (1984) Heisig-Gunkel andGunkel (1982); Herbes and Allen (1983) Shrimp and crab 10-40 (d), 1.0-2.0 (w) Cavaletto and Gardner (1988); …”

Section: Aquatic Organismsmentioning

confidence: 95%

Bioconcentration, Bioaccumulation, and Metabolism of Pesticides in Aquatic Organisms

Katagi

2009

Reviews of Environmental Contamination and Toxicology

136

102

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The ecotoxicological assessment of pesticide effects in the aquatic environment should normally be based on a deep knowledge of not only the concentration of pesticides and metabolites found but also on the influence of key abiotic and biotic processes that effect rates of dissipation. Although the bioconcentration and bioaccumulation potentials of pesticides in aquatic organisms are conveniently estimated from their hydrophobicity (represented by log K(ow), it is still indispensable to factor in the effects of key abiotic and biotic processes on such pesticides to gain a more precise understanding of how they may have in the natural environment. Relying only on pesticide hydrophobicity may produce an erroneous environmental impact assessment. Several factors affect rates of pesticide dissipation and accumulation in the aquatic environment. Such factors include the amount and type of sediment present in the water and type of diet available to water-dwelling organisms. The particular physiological behavior profiles of aquatic organisms in water, such as capacity for uptake, metabolism, and elimination, are also compelling factors, as is the chemistry of the water. When evaluating pesticide uptake and bioconcentration processes, it is important to know the amount and nature of bottom sediments present and the propensity that the stuffed aquatic organisms have to absorb and process xenobiotics. Extremely hydrophobic pesticides such as the organochlorines and pyrethroids are susceptible to adsorb strongly to dissolved organic matter associated with bottom sediment. Such absorption reduces the bioavailable fraction of pesticide dissolved in the water column and reduces the probable ecotoxicological impact on aquatic organisms living the water. In contrast, sediment dweller may suffer from higher levels of direct exposure to a pesticide, unless it is rapidly degraded in sediment. Metabolism is important to bioconcentration and bioaccumulation processes, as is detoxification and bioactivation. Hydrophobic pesticides that are expected to be highly stored in tissues would not be bioconcentrated if susceptible to biotic transformation by aquatic organisms to more rapidly metabolized to hydrophilic entities are generally less toxic. By analogy, pesticides that are metabolized to similar entities by aquatic species surely are les ecotoxicologically significant. One feature of fish and other aquatic species that makes them more relevant as targets of environmental studies and of regulation is that they may not only become contaminated by pesticides or other chemicals, but that they constitute and important part of the human diet. In this chapter, we provide an overview of the enzymes that are capable of metabolizing or otherwise assisting in the removal of xenobiotics from aquatic species. Many studies have been performed on the enzymes that are responsible for metabolizing xenobiotics. In addition to the use of conventional biochemical methods, such studies on enzymes are increasingly being conducted using immunochemical met...

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Section: Aquatic Organismsmentioning

confidence: 95%

Bioconcentration, Bioaccumulation, and Metabolism of Pesticides in Aquatic Organisms

Katagi

2009

Reviews of Environmental Contamination and Toxicology

136

102

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“…Because external nutrient levels often facilitate biochemical changes in plants and algae such as carbohydrates, lipids, and proteins [30,45,46] that are involved in metabolic functions, future studies should continue to explore the implications of these physiological changes on ecotoxicological responses. Application of stoichiometric and nutrient uptake endpoints to ecotoxicity assays may provide additional useful insight regarding potentially adverse ecological effects that are not assessed in standardized bioassays used in ecological risk assessments.…”

Section: Resultsmentioning

confidence: 99%

Exploring Lemna gibba thresholds to nutrient and chemical stressors: Differential effects of triclosan on internal stoichiometry and nitrate uptake across a nitrogen:phosphorus gradient

Fulton

Brain

Usenko

et al. 2010

Enviro Toxic and Chemistry

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Nutrient enrichment often co-occurs with chemical stressors in aquatic ecosystems, but the impacts of these multiple stressors across nutrient gradients is poorly understood and not typically addressed in ecotoxicity studies of lower trophic level models. Moreover, laboratory assays performed to determine threshold responses of aquatic macrophytes to contaminants typically use growth and morphometric endpoints to establish threshold effects and seldom report other important functional responses of lower trophic levels. Using the aquatic macrophyte Lemna gibba, we examined influences of varying nitrogen (N) and phosphorus (P) levels in combination with triclosan, a widely used antimicrobial agent in consumer care products, on internal carbon (C):N:P and NO(3) (-) uptake kinetics. Triclosan modulated L. gibba tissue N and P content, and these stoichiometric responses for P-limited plants to triclosan exposure were more sensitive than growth endpoints employed in standardized phytotoxicity assays. Nitrate uptake capacities were also differentially inhibited by triclosan exposure according to external nutrient levels. Uptake rates for plants cultured and exposed under saturating N-levels were inhibited by more than threefold compared with N-limited plants. The results suggest that stoichiometric and nutrient uptake responses to chemical stressors provide useful information regarding adverse ecological thresholds not defined in standardized phytotoxicity assays with aquatic macrophytes. Our findings further indicate that site-specific impacts of chemicals associated with the wide ambient ranges of N and P typical of surface waters may be anticipated in lower trophic levels. Future studies should examine adverse effects of other stressors to these ecologically relevant endpoints, which may be useful in environmental assessment and management.

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“…Algal lipids consist of neutral lipids, glycolipids and phospholipids (Thompson 1996), which are different in different algae species and are affected by nutritional conditions (Khozin-Goldberg & Cohen 2006, Merzlyak et al 2007). There is a difference in the total lipids, neutral lipids, glycolipids, and phospholipids of normalized BAFs for PCBs by microalgae (Halling-Sørensen et al 2000). Values of BAFlip for BDE-47 in H. akashiwo may also be affected by lipid composition, which should be further studied in the future.…”

Section: Discussionmentioning

confidence: 95%

“…The bioaccumulation of POPs by microalgae is influenced by the properties of organic compounds (such as molecular structure and hydrophobicity), and by algal lipids, which are variable between species and influenced by environmental factors (Stange & Swackhamer 1994, Berglund et al 2000, Carlson & Swackhamer 2006. Several studies reported the bioconcentration of POPs, such as PCBs, by microalgae in nutrientlimited conditions (Halling-Sørensen et al 2000, Datta 2001, Lynn et al 2007. However, few studies have examined the nutrient concentration-induced change in the bioaccumulation of PBDE.…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation of PBDE congener 2,2′,4,4′-tetrabromodiphenyl ether by Heterosigma akashiwo in response to different nutrient concentrations

Yin

Chai

et al. 2013

Oceanological and Hydrobiological Studies

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Changes in the bioaccumulation of 2,2′,4,4′-tetrabromodiphenyl ether in the marine alga Heterosigma akashiwo (Raphidophyceae) were examined for different concentrations of nitrate (0, 128, and 512 μmol dm -3 ) and phosphate (0, 8, and 32 μmol dm -3 ) in the semi-continuous culture with 20% renewal rate. The BDE-47 content per cell and per culture, as well as the accumulated percentage of available BDE-47, presented a significant decreasing trend with the increase in nitrate and phosphate concentrations. The N-0 (4.0 × 10 -6 ng cell -1 ) and P-0 (5.8 × 10 -6 ng cell -1 ) treatments had significantly higher BDE-47 content per cell than other treatments. In comparison, the difference in BDE-47 per algal culture and accumulated percentage between the nitrate treatments or phosphate treatments was not as obvious as the BDE-47 content per cell. BDE-47 per cell presented significantly negative correlation with nitrate and phosphate concentrations, and the accumulated BDE-47 was in positive correlation with * Corresponding author: chaichao1999@126.com lipid content. log BAFlip for BDE-47 in H. akashiwo ranged from 6.70 to 7.25. The results of this study indicate that variation in BDE-47 accumulation by H. akashiwo corresponds to the change in cellular lipid content induced by different nitrate and phosphate concentrations.

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Influence of Nitrogen Status on the Bioconcentration of Hydrophobic Organic Compounds to Selenastrum capricornutum

Cited by 46 publications

References 37 publications

Bioconcentration, Bioaccumulation, and Metabolism of Pesticides in Aquatic Organisms

Bioconcentration, Bioaccumulation, and Metabolism of Pesticides in Aquatic Organisms

Exploring Lemna gibba thresholds to nutrient and chemical stressors: Differential effects of triclosan on internal stoichiometry and nitrate uptake across a nitrogen:phosphorus gradient

Bioaccumulation of PBDE congener 2,2′,4,4′-tetrabromodiphenyl ether by Heterosigma akashiwo in response to different nutrient concentrations

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