Bioremediation of Metallic Ions by Eight
            <i>Penicillium</i>
            Species

Martins, Leonardo Ribeiro; Lyra, Fernanda Henrique; Rugani, Mirthes M. H.; Takahashi, Jacqueline A.

doi:10.1061/(asce)ee.1943-7870.0000998

Cited by 18 publications

(11 citation statements)

References 36 publications

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“…For example, many organisms which can grow in rich laboratory media with high radionuclide concentrations [ 9 ] may not be able to cope with similar concentrations in soil, where nutrient availability is lower and other stressors are present. Consequently, an organism’s ability to survive and proliferate under oligotrophic conditions in the presence of severe radioactive contamination would be needed to usefully exploit this organism for bioremediation [ 7 ]. Such abilities were demonstrated by several fungal taxa (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Such abilities were demonstrated by several fungal taxa (e.g. Penicillium , Cladosporium , Alternaria ) in data set two, suggesting that their potential as radionuclide bioremediators may need to be evaluated further [ 7 ].…”

Section: Discussionmentioning

confidence: 99%

“…Understanding radionuclide effects on non-human biota is important for environmental protection and bioremediation after accidental (e.g. from nuclear power plants or waste storage facilities) or malicious (“dirty bomb” attacks) radionuclide releases [ 1 – 7 ]. Microbial population responses in radionuclide-contaminated environments can differ from those measured experimentally because the biological effects of radionuclides are modulated by other stressors (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Understanding and predicting such patterns can guide research on environmental protection and bioremediation after radionuclide releases [ 5 , 6 , 8 ]. In particular, study results could be useful in identifying which microbial taxa are most sensitive to radioactive pollution and, conversely, which are most robust and could, therefore, be considered as bioremediation agents [ 7 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Quantitative Modeling of Microbial Population Responses to Chronic Irradiation Combined with Other Stressors

Shuryak

Dadachova

2016

PLoS ONE

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Microbial population responses to combined effects of chronic irradiation and other stressors (chemical contaminants, other sub-optimal conditions) are important for ecosystem functioning and bioremediation in radionuclide-contaminated areas. Quantitative mathematical modeling can improve our understanding of these phenomena. To identify general patterns of microbial responses to multiple stressors in radioactive environments, we analyzed three data sets on: (1) bacteria isolated from soil contaminated by nuclear waste at the Hanford site (USA); (2) fungi isolated from the Chernobyl nuclear-power plant (Ukraine) buildings after the accident; (3) yeast subjected to continuous γ-irradiation in the laboratory, where radiation dose rate and cell removal rate were independently varied. We applied generalized linear mixed-effects models to describe the first two data sets, whereas the third data set was amenable to mechanistic modeling using differential equations. Machine learning and information-theoretic approaches were used to select the best-supported formalism(s) among biologically-plausible alternatives. Our analysis suggests the following: (1) Both radionuclides and co-occurring chemical contaminants (e.g. NO2) are important for explaining microbial responses to radioactive contamination. (2) Radionuclides may produce non-monotonic dose responses: stimulation of microbial growth at low concentrations vs. inhibition at higher ones. (3) The extinction-defining critical radiation dose rate is dramatically lowered by additional stressors. (4) Reproduction suppression by radiation can be more important for determining the critical dose rate, than radiation-induced cell mortality. In conclusion, the modeling approaches used here on three diverse data sets provide insight into explaining and predicting multi-stressor effects on microbial communities: (1) the most severe effects (e.g. extinction) on microbial populations may occur when unfavorable environmental conditions (e.g. fluctuations of temperature and/or nutrient levels) coincide with radioactive contamination; (2) an organism’s radioresistance and bioremediation efficiency in rich laboratory media may be insufficient to carry out radionuclide bioremediation in the field—robustness against multiple stressors is needed.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quantitative Modeling of Microbial Population Responses to Chronic Irradiation Combined with Other Stressors

Shuryak

Dadachova

2016

PLoS ONE

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“…Cell walls of microbial biomass, mainly composed of polysaccharides, proteins and lipids have different functional groups for interactions with metal ions such as aldehydic, ketonic, amide, carboxyl, sulphate, phosphate and amino groups. This type of biosorptionusually rapid than metabolism dependent mechanisms and can be reversible [30,31] from the waste water [59][60][61][62][63][64][65][66].…”

Section: Biosorption and Biosorbentsmentioning

confidence: 99%

Untitled

2018

RJLBPCS

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ABSTRACT:Biosorption is an efficient technique for the removal of heavy metal contaminants from water or waste water. The water pollution due to heavy metals is one of the challenging issues in the world. The conventional methods are applying for the removal processes of heavy metal are expensive or takes long time or has less efficiency or not economical. As the availability of cheap bio sorbents, it becomes more reliable and economical process. Most of the biosorbents are waste materials of the part of animal and plants and their efficiency can increase by their chemical modifications. Biosorption process not only used to remove heavy metals but can also be used in the metal recovery. Metals cannot invent in laboratories or industries but they persist in the water bodies.Most of heavy metals are essential for the growth and development of organism below the considerable limits but beyond the limit they are definitely hazardous to all living organisms.Biosorption process is a part of sustainability and can remove the metallic pollutant at their sources and minimize the fresh water pollution. Cost is also an effective parameter for applying a process in the large scale and biosorption is very cheap and requires minimization of chemicals or instruments/apparatus.

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Biosorption: A Novel Biotechnological Application for Removal of Hazardous Pollutants

Singh

Saini

2020

Innovations in Food Technology

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Bioremediation of Metallic Ions by Eight Penicillium Species

Cited by 18 publications

References 36 publications

Quantitative Modeling of Microbial Population Responses to Chronic Irradiation Combined with Other Stressors

Quantitative Modeling of Microbial Population Responses to Chronic Irradiation Combined with Other Stressors

Untitled

Biosorption: A Novel Biotechnological Application for Removal of Hazardous Pollutants

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