Bioaccumulation of heavy metals in marine organisms and sediments from Admiralty Bay, King George Island, Antarctica

Trevizani, Tailisi Hoppe; Figueira, Rubens César Lopes; Ribeiro, Andreza Portella; Theóphilo, Carolina Yume Sawamura; Majer, Alessandra Pereira; Petti, Mônica Angélica Varella; Corbisier, Thaís Navajas; Montone, Rosalinda Carmela

doi:10.1016/j.marpolbul.2016.02.056

Cited by 64 publications

(33 citation statements)

References 27 publications

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“…The surroundings of microorganisms encased in Antarctic sea‐ice matrix are low temperatures and high light levels, with the only liquid being pockets of concentrated brines (Thomas & Dieckmann, ). Antarctica is often considered as one of the last pristine regions, but some studies have reported that there is a tendency to increase the heavy metal contaminants, such as As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn, due to atmospheric circulation and anthropogenic contamination from modern industries (Planchon et al., ; Trevizani et al., ; Yin et al., ), and the heavy metals content is even higher in organisms of the Southern Ocean than those from other oceans (Bargagli, ).…”

Section: Introductionmentioning

confidence: 99%

Copper stress response in yeast Rhodotorula mucilaginosa AN5 isolated from sea ice, Antarctic

et al. 2018

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Heavy metal pollution in Antarctic is serious by anthropogenic emissions and atmospheric transport. To dissect the heavy metal adaptation mechanisms of sea-ice organisms, a basidiomycetous yeast strain AN5 was isolated and its cellular changes were analyzed. Morphological, physiological, and biochemical characterization indicated that this yeast strain belonged to Rhodotorula mucilaginosa AN5. Heavy metal resistance pattern of Cd > Pb = Mn > Cu > Cr > Hg was observed. Scanning electron microscopic (SEM) results exhibited altered cell surface morphology under the influence of copper metal compared to that with control. The determination of physiological and biochemical changes manifested that progressive copper treatment significantly increased antioxidative reagents content and enzymes activity in the red yeast, which quench the active oxygen species to maintain the intercellular balance of redox state and ensure the cellular fission and growth. Comparative proteomic analysis revealed that, under 2 mM copper stress, 95 protein spots were tested reproducible changes of at least 10-fold in cells. Among 95 protein spots, 43 were elevated and 52 were decreased synthesis. After MALDI TOF MS/MS analysis, 51 differentially expressed proteins were identified successfully and classified into six functional groups, including carbohydrate and energy metabolism, nucleotide and protein metabolism, protein folding, antioxidant system, signaling, and unknown function proteins. Function analysis indicated that carbohydrate and energy metabolism-, nucleotide and protein metabolism-, and protein folding-related proteins played central role to the heavy metal resistance of Antarctic yeast. Generally, the results revealed that the yeast has a great capability to cope with heavy metal stress and activate the physiological and protein mechanisms, which allow more efficient recovery after copper stress. Our studies increase understanding of the molecular resistance mechanism of polar yeast to heavy metal, which will be benefitted for the sea-ice isolates to be a potential candidate for bioremediation of metal-contaminated environments.

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Section: Introductionmentioning

confidence: 99%

Copper stress response in yeast Rhodotorula mucilaginosa AN5 isolated from sea ice, Antarctic

et al. 2018

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“…Los organismos bentónicos con hábitos filtradores y depositívoros, se utilizan como buenos bioindicadores de contaminación, tal es el caso del poliqueto Capitela capitata (Ortíz-Gallarza & Ortega-Rubio, 2014); Trevizani et al (2016) señalan que el comportamiento alimentario de los organismos marinos microfitobentónicos acumulan más Cu que los depositívoros y carnívoros, sin embargo, el Zn es más bioacumulado en estos últimos. En ese sentido, Jakimska et al (2011) indican que la absorción de metales en los animales marinos, de acuerdo a distintas especies, retienen concentraciones mayores a las del medio.…”

Section: Discussionunclassified

Metales trazas (Fe, Mn, Zn, Cu) en el poliqueto Americonuphis reesei (Clase: Polychaeta), en la playa El Salado, Aguadulce, Panamá

et al. 2020

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Se determinó la concentración de metales trazas Fe, Mn, Zn, Cu en el homogeneizado de todo el tejido del poliqueto Americonuphis reesei, en tres estaciones de muestreo en la playa El Salado, bahía de Parita, en temporada seca de 2017. En cada estación, se establecieron tres puntos de colecta, separados por 50 m entre sí. Las muestras fueron digeridas con ácido nítrico y los metales se determinaron por espectrofotometría de absorción atómica. Los máximos valores registrados fueron el Fe, con promedio de 581.98 µg·gˉ¹, seguido del Mn con 25.71 µg·gˉ¹. Los valores más bajos se reportaron para el Zn, 16.05 µg·gˉ¹ y el Cu, 3.52 µg·gˉ¹. Existe correlación significativa entre los metales Fe y Mn (r= 0.95), Mn y Cu (r= 0.71) P < 0.01 y altamente significativa entre Fe y Cu (r= 0.64) P < 0.002. Las tallas de los poliquetos, medidos con cinta métrica, en las estaciones 1 (río Santa María) y 3 (Palo Blanco) no presentaron diferencias significativas, pero en El Playón hubo diferencias con respecto a las otras. Las tallas y los metales no se relacionaron. Los valores entre los puntos de colecta indican que existe diferencia significativa de Mn y Fe en las zonas 1 y 3, y de Fe entre la 1 y 2. Los metales detectados en los tejidos no suponen riesgo, ya que están por debajo de los valores de los estándares establecidos.

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“…Whole-body soft tissues were digested and analyzed for As and trace metals, according to procedures described in detail by Trevizani et al (2016). Samples were extracted and elements quantified in an Inductively Coupled Plasma Optical Emission Spectrometry (ICPOES) Varian, 710-ES series.…”

Section: Analysis Of Sediments and Bioaccumulation In Whole-body Tissuesmentioning

confidence: 99%

Biomarkers responses of the clam Anomalocardia flexuosa in sediment toxicity bioassays using dredged materials from a semi-arid coastal system

Moreira

Sasaki

Taniguchi

et al. 2020

Heliyon

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Few test organisms are employed for sediment toxicity assessments in Tropical regions, including Brazil. We assessed the ability of the clam Anomalocardia flexuosa to respond to contamination in sediment bioassays using dredging materials of a semi-arid region (Cear a State, NE Brazil), with attention to sublethal responses. Sediments were collected during and after dredging (survey 1 and 2, respectively) and animals exposed in laboratory over 28 days, with responses measured at 7 days. Bioaccumulation of contaminants was determined in whole-body soft tissues as a metric of bioavailability, and biomarkers' changes were monitored in terms of enzymes of phase I and II metabolism, acetylcholinesterase (AChE), and antioxidant responses, lipid peroxidation (LPO) and DNA damage (strand breaks). Clams accumulated aliphatic (AHs) and aromatic hydrocarbons (PAHs), and linear alkylbenzenes (LABs) compared to control conditions (day 0), with increased amounts of As, Cd, Cu, and Zn observed in some samples. The enzyme glutathione S-transferase was enhanced in animals exposed to samples, indicating activation of phase II metabolism. Changes observed in glutathione peroxidase (GPx), glutathione reductase (GR), LPO and strand breaks were related to oxidative stress. AChE enzymatic activity also changed, as an indicator of neurotoxicity caused by sediment exposure. The computed integrated biomarker response index (IBR) ranked sites according to the contamination status and proximity to its sources. Correlations found for biomarkers and bioaccumulation of hydrocarbons indicated the influence of harbor activities, effluent discharges, and urban runoff on the sediment pollution of Mucuripe Bay. Data also showed that SQGs are unable to predict bioaccumulation and subchronic effects. Based on our results we consider that biomarkers responses in A. flexuosa are important endpoints to be applied in sediment toxicity bioassays in tropical regions.

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Bioaccumulation of heavy metals in marine organisms and sediments from Admiralty Bay, King George Island, Antarctica

Cited by 64 publications

References 27 publications

Copper stress response in yeast Rhodotorula mucilaginosa AN5 isolated from sea ice, Antarctic

Copper stress response in yeast Rhodotorula mucilaginosa AN5 isolated from sea ice, Antarctic

Metales trazas (Fe, Mn, Zn, Cu) en el poliqueto Americonuphis reesei (Clase: Polychaeta), en la playa El Salado, Aguadulce, Panamá

Biomarkers responses of the clam Anomalocardia flexuosa in sediment toxicity bioassays using dredged materials from a semi-arid coastal system

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