The toxicity of potentially toxic elements (Cu, Fe, Mn, Zn and Ni) to the cnidarian Hydra attenuata at environmentally relevant concentrations

McKinley, Kevin L.; McLellan, Iain; Gagné, François; Quinn, Brian

doi:10.1016/j.scitotenv.2019.02.193

Cited by 42 publications

(20 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These metals are highly accumulated in the muscles and liver of fish [21]. Also, many studies observed various toxic effects of these metals on aquatic and terrestrial ecosystems [34,35].…”

Section: 1radial Growth Of the Fungal Strain At Various Heavy Metal Concentrationsmentioning

confidence: 99%

Heavy Metal Tolerance Potential of Aspergillus alliaceus Isolated from a Green Turtle Nesting Site

Candan¹

2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

View full text Add to dashboard Cite

Heavy metals are naturally present in the environment. As a result of human activities and some natural events, mixing of these metals in water, air and soil is one of the most serious global problems. The toxicity of these metals is also a serious global problem due to their accumulation in living things and non-biodegradable characteristics. Increasing heavy metal pollution in aquatic and terrestrial environments requires improvement strategies such as bioremediation to remove these metals from the environment for human and environmental health. In this study, fungal isolation was performed to examine fungi with heavy metal remediation potential using sand samples from Sugözü Beaches where are subjected to intense environmental effects due to human activities including industrial facilities and marine traffic. This beach is also an important nesting area for the green turtle. Aspergillus alliaceus isolated from this beach was identified using primers of internal transcribed spacer 1 and 4. To determine the tolerance of A. alliaceus to iron, zinc, cobalt and copper, the fungus was inoculated into media containing metal at different concentrations (200, 400, 600, 800, and 1000 ppm). Daily mycelium growths were recorded during a ten day incubation at 30°C. A.alliaceus was found to tolerate Fe and Zn at all concentrations. Besides, it tolerated Co and Cu up to 400 and 600 ppm, respectively. In this study, the tolerance of A. alliaceus to Fe, Zn, and Co was determined for the first time and it is recommended that it can be used efficiently in bioremediation studies.

show abstract

“…These metals are highly accumulated in the muscles and liver of fish [21]. Also, many studies observed various toxic effects of these metals on aquatic and terrestrial ecosystems [34,35].…”

Section: 1radial Growth Of the Fungal Strain At Various Heavy Metal Concentrationsmentioning

confidence: 99%

Heavy Metal Tolerance Potential of Aspergillus alliaceus Isolated from a Green Turtle Nesting Site

Candan¹

2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

View full text Add to dashboard Cite

show abstract

“…However, consumption of high Mn concentrations may cause severe adverse health effects such as a neurodegenerative disorder ( Levy and Nassetta, 2003 ; Sandilyan and Kathiresan, 2014 ; Singh et al, 2010 ), cardiovascular toxicity ( Jiang and Zheng, 2005 ), and liver damage ( O’Neal and Zheng, 2015 ). In marine coastal ecosystems such as estuaries, few studies reported Mn as a potentially toxic element since the concentrations are generally low in these ecosystems ( Hadlich et al, 2018 ; McKinley et al, 2019 ). However, recent studies worldwide, motivated by increasingly large inputs of Mn from human activities, such as mining activity, mining waste, and urban waste, have reported Mn as a potential contaminant for several aquatic species and, thus, its toxicity ( Gabriel et al, 2020a ; Harford et al, 2015 ; McKinley et al, 2019 ; Squadrone et al, 2016 ; Summer et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

“…In marine coastal ecosystems such as estuaries, few studies reported Mn as a potentially toxic element since the concentrations are generally low in these ecosystems ( Hadlich et al, 2018 ; McKinley et al, 2019 ). However, recent studies worldwide, motivated by increasingly large inputs of Mn from human activities, such as mining activity, mining waste, and urban waste, have reported Mn as a potential contaminant for several aquatic species and, thus, its toxicity ( Gabriel et al, 2020a ; Harford et al, 2015 ; McKinley et al, 2019 ; Squadrone et al, 2016 ; Summer et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

“…These metals arrived in the Rio Doce estuary associated with mine tailings, which are predominantly composed of Fe oxyhydroxides that have strong affinity with metals ( Gabriel et al, 2020a ; Queiroz et al, 2018 ). Among the reported elements, Mn does not have a threshold for soil quality according to Brazilian legislation for contaminated soil ( CONAMA, 2009 ), but may pose different risks to the estuarine environment due to its naturally high affinity to Fe and its fast dynamics in redox active environments ( Andreji and Stráňai, 2007 ; Gabriel et al, 2020b ; Kennish, 2002 ; McKinley et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

“…It is not surprising that Mn has not yet been reported as a contaminant in the Rio Doce estuary since Mn contamination in estuarine ecosystems is often overlooked ( McKinley et al, 2019 ; Pinsino et al, 2012 ). We hypothesize that due to the redox environment in the Rio Doce estuarine soils, the Fe oxyhydroxides will act as sources of Mn leading to a potential risk of Mn contamination.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Manganese: The overlooked contaminant in the world largest mine tailings dam collapse

Queiroz

Ying

Abernathy

et al. 2021

Environment International

View full text Add to dashboard Cite

Manganese (Mn) is an abundant element in terrestrial and coastal ecosystems and an essential micronutrient in the metabolic processes of plants and animals. Mn is generally not considered a potentially toxic element due to its low content in both soil and water. However, in coastal ecosystems, the Mn dynamic (commonly associated with the Fe cycle) is mostly controlled by redox processes. Here, we assessed the potential contamination of the Rio Doce estuary (SE Brazil) by Mn after the world’s largest mine tailings dam collapse, potentially resulting in chronic exposure to local wildlife and humans. Estuarine soils, water, and fish were collected and analyzed seven days after the arrival of the tailings in 2015 and again two years after the dam collapse in 2017. Using a suite of solid-phase analyses including X-ray absorption spectroscopy and sequential extractions, our results indicated that a large quantity of Mn II arrived in the estuary in 2015 bound to Fe oxyhydroxides. Over time, dissolved Mn and Fe were released from soils when Fe III oxyhydroxides underwent reductive dissolution. Due to seasonal redox oscillations, both Fe and Mn were then re-oxidized to Fe III , Mn III , and Mn IV and re-precipitated as poorly crystalline Fe oxyhydroxides and poorly crystalline Mn oxides. In 2017, redox conditions (Eh: −47 ± 83 mV; pH: 6.7 ± 0.5) favorable to both Fe and Mn reduction led to an increase (~880%) of dissolved Mn (average for 2015: 66 ± 130 μg L −1 ; 2017: 582 ± 626 μg L −1 ) in water and a decrease (~75%, 2015: 547 ± 498 mg kg −1 ; 2017: 135 ± 80 mg kg −1 ) in the total Mn content in soils. The crystalline Fe oxyhydroxides content significantly decreased while the fraction of poorly ordered Fe oxides increased in the soils limiting the role of Fe in Mn retention. The high concentration of dissolved Mn found within the estuary two years after the arrival of mine tailings indicates a possible chronic contamination scenario, which is supported by the high levels of Mn in two species of fish living in the estuary. Our work suggests a high risk to estuarine biota and human health due to the rapid Fe and Mn biogeochemical dynamic within the impacted estuary.

show abstract

Detoxification of Leachate by Coagulation Treatment Prior to Fermentation and Possible Reuse in Irrigation

Cherni

Elleuch

Kasmi

et al. 2022

CLEAN Soil Air Water

View full text Add to dashboard Cite

Landfill leachate (LFL) is a very complex effluent that poses considerable threats to humans and to the environment. Selecting the appropriate process for leachate treatment still poses potential concern and challenge for the operation in municipal landfills. The current study aims to assess stabilized leachate degradation through coagulation by using different chemicals (Al 2 (SO 4 ) 3 , FeCl 3 , FeSO 4 ). Thereafter, a complementary process using two Candida strains (Candida kefyr and Candida glabrata) is investigated as a biological treatment of treated LFL. Furthermore, the phytotoxicity of treated LFL is examined by seed germination/root elongation tests using barley and tomato seeds. Upon experimentation and research, the results reveal that the optimum removal efficiency for chemical oxygen demand (COD) and ammonium (NH 4 + -N) is 73.3% and 53.5%, respectively, when using the combined process. The removal efficiency of toxic metal elements (Fe, Pb, and Zn) is improved significantly (up to 80%). In addition, physiological and biochemical analyses confirm that the combined process allows a significant toxicity reduction. The obtained outcome is encouraging and supports the possible use of the treated LFL as a fertilizer for plant growth.

show abstract

The toxicity of potentially toxic elements (Cu, Fe, Mn, Zn and Ni) to the cnidarian Hydra attenuata at environmentally relevant concentrations

Cited by 42 publications

References 40 publications

Heavy Metal Tolerance Potential of Aspergillus alliaceus Isolated from a Green Turtle Nesting Site

Heavy Metal Tolerance Potential of Aspergillus alliaceus Isolated from a Green Turtle Nesting Site

Manganese: The overlooked contaminant in the world largest mine tailings dam collapse

Detoxification of Leachate by Coagulation Treatment Prior to Fermentation and Possible Reuse in Irrigation

Contact Info

Product

Resources

About