Metal and metalloid biorecovery using fungi

Liang, Xinjin; Gadd, Geoffrey Michael

doi:10.1111/1751-7915.12767

Cited by 85 publications

(54 citation statements)

References 53 publications

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“…Finalmente, la aplicación de los sistemas microbianos para la biorecuperación y bioprocesos de los metales ha recibido gran importancia en los últimos años (Liang & Gadd 2017). En este sentido, en los suelos del pasivo minero Santa Rosa se ha encontrado una microflora de hongos y bacterias resistente a metales pesados, los cuales podrían jugar el rol de promotores de crecimiento vegetal protegiendo a las plantas de los efectos tóxicos de los metales (Jiang et al 2008), pero también podrían tener el rol de bioacumulación y reducción de los metales pesados.…”

Section: Resultados Y Discusiónunclassified

Microorganismos tolerantes a metales pesados del pasivo minero Santa Rosa, Jangas (Perú)

et al. 2019

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En el presente trabajo estudiamos el grado de tolerancia a metales pesados de hongos y bacterias aisladas de suelos con y sin rizósfera, con el propósito de conocer su potencial para aplicaciones en biorremediación. Las muestras procedían del pasivo minero de Santa Rosa de Jangas. Los hongos y bacterias aislados fueron identificados taxonómicamente mediante el análisis de la región ITS y 16S ADNr, respectivamente. El índice de tolerancia a metales pesados se calculó usando medio salino suplementado con 1 mM a plomo (II), cobre (II), niquel (II) o zinc (II), y 0.1 mM a plata (I), cromo (VI) o cadmio (II). En total se aislaron 23 hongos y 18 bacterias. Las cepas de hongos con mejores índices de tolerancia fueron: Fusarium temperatum CTLM05 (Pb+2), F. temperatum CTLM08 (Zn+2), F. oxysporum CTLM18 (Ni+2 y Cd+2), F. oxysporum CTLM12 (Ag+1), F. inflexumCTLM22 (Cu+2) y Penicillium vanluykii CTLM11 (Cr+6). Las cepas de bacterias con mayores índices de tolerancia fueron Bacillus licheniformis SSR18 (Cd+2, Ni+2 y Zn+2), B. subtilis SSR3 (Pb+2), Serratia sp. SSR15 (Cu+2), Serratia sp. SSR13 (Ag+1) y B. cereus SSR01 (Cr+6). También se encontró que los hongos mostraron mejores índices de tolerancia que las bacterias. Finalmente, los suelos del pasivo ambiental minero de Santa Rosa de Jangas poseen una microflora interesante, probablemente con mecanismos para su adaptación, crecimiento y desarrollo sobre metales pesados y pueden ser de utilidad para el desarrollo de procesos biotecnológicos y biorremediación.

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Section: Resultados Y Discusiónunclassified

Microorganismos tolerantes a metales pesados del pasivo minero Santa Rosa, Jangas (Perú)

et al. 2019

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“…Manganese nodule resources represent a wealth of metals with wide ranging uses as both raw materials for infrastructure, such as Cu, Ni and Mn, and critical metals with application in advanced electronic and energy technologies, including Co, Nb and several REE (Hein et al, 2013;Vidal et al, 2017). Bioprocessing strategies using bacteria and fungi have received renewed attention in this context as efficient low-cost and low-carbon alternatives to traditional metal processing approaches (Strasser et al, 1994;Mulligan and Galvez-Cloutier, 2000;Mulligan et al, 2004;Biswas et al, 2013;Zeng et al, 2015;Jadhav et al, 2016;Liang and Gadd, 2017). In the light of these trends, we have investigated some fundamental interactions between manganese nodules and Aspergillus niger, a geoactive species considered to be particularly well suited to such applications.…”

Section: Discussionmentioning

confidence: 99%

Colonization, penetration and transformation of manganese oxide nodules by Aspergillus niger

Ferrier

Yang

Csetényi

et al. 2019

Environmental Microbiology

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SummaryIn this study, the ability of the geoactive fungus Aspergillus niger to colonize and transform manganese nodules from the Clarion‐Clipperton Zone in both solid and liquid media was investigated. Aspergillus niger was able to colonize and penetrate manganese nodules embedded in solid medium and effect extensive transformation of the mineral in both fragmented and powder forms, precipitating manganese and calcium oxalates. Transformation of manganese nodule powder also occurred in a liquid medium in which A. niger was able to remove the fine particles from suspension which were accumulated within the central region of the resulting mycelial pellets and transformed into manganese oxalate dihydrate (lindbergite) and calcium oxalate dihydrate (weddellite). These findings contribute to an understanding of environmental processes involving insoluble manganese oxides, with practical relevance to chemoorganotrophic mineral bioprocessing applications, and, to the best of our knowledge, represent the first demonstration of fundamental direct and indirect interactions between geoactive fungi and manganese nodules.

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“…Bioremediation has been applied as an effective solution in treatments of Pb-contamination (Liang and Gadd, 2017). Compared with the typical physical-chemical methods, direct bioremediation by utilizing microorganisms might be an economic and sustainable alternative pathway (Kapoor and Viraraghavan, 1995;Ozdemir et al, 2004;Ayangbenro and Babalola, 2017).…”

Section: Introductionmentioning

confidence: 99%

A new insight into lead (II) tolerance of environmental fungi based on a study of Aspergillus niger and Penicillium oxalicum

Tian

Jiang

et al. 2019

Environmental Microbiology

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Summary Environmental microorganisms have been widely applied in heavy metal remediation. This study explored the mechanisms of lead tolerance of two typical filamentous fungi, Aspergillus niger and Penicillium oxalicum. It is shown that the mechanisms of reducing Pb toxicity by these two fungi have three major pathways. The secreted oxalic acid can react with Pb (II) to form insoluble Pb minerals, primarily lead oxalate. Then, the enhanced biosorption via forming new border of cell wall prevents the transportation of Pb (II) into hypha. In addition, the fungal activity could be maintained even at high Pb concentration due to the intracellular accumulation. It was confirmed that A. niger has the higher Pb tolerance (up to 1500 mg l−1 Pb level) compared with P. oxalicum (up to 1000 mg l−1). Meanwhile, Pb levels below 1000 mg l−1 partially stimulate the bioactivity of A. niger, which was confirmed by its elevated respiration (from 53 to 63 mg C l−1 medium h−1). This subsequently enhanced microbial functions of A. niger to resist Pb toxicity. A better understanding of Pb tolerance of these two fungi sheds a bright future of applying them to remediate lead‐contaminated environments.

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Metal and metalloid biorecovery using fungi

Cited by 85 publications

References 53 publications

Microorganismos tolerantes a metales pesados del pasivo minero Santa Rosa, Jangas (Perú)

Microorganismos tolerantes a metales pesados del pasivo minero Santa Rosa, Jangas (Perú)

Colonization, penetration and transformation of manganese oxide nodules by Aspergillus niger

A new insight into lead (II) tolerance of environmental fungi based on a study of Aspergillus niger and Penicillium oxalicum

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