Evaluation of aluminium mobilization from its soil mineral pools by simultaneous effect of Aspergillus strains' acidic and chelating exometabolites

Polák, Filip; Urík, Martin; Bujdoš, Marek; Uhlík, Peter

doi:10.1016/j.jinorgbio.2017.09.006

Cited by 15 publications

(7 citation statements)

References 37 publications

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“…It was reported that both low-molecular-weight organic acids and protons contribute to the dissolution of ferric minerals [31,36]. Since our previous research indicated that both citrate and oxalate are produced by the fungal strain used in the presented study [37,38], and the strain is also capable of acidifying the media during cultivation (Figure 1a), we can hypothesize that the aforementioned metabolites and extruded protons deteriorate the matrix of ferric oxyhydroxides or oxides, and the iron ions are then released into the solution [39]. This is highlighted by the recorded concentration of dissolved iron in the culture medium after cultivation that reached 190 mg•L −1 (Figure 2b).…”

Section: Discussionmentioning

confidence: 80%

Fungal Mobilization of Selenium in the Presence of Hausmannite and Ferric Oxyhydroxides

Farkas

Vojtková

Bujdoš

et al. 2021

JoF

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Bioleaching of mineral phases plays a crucial role in the mobility and availability of various elements, including selenium. Therefore, the leachability of selenium associated with the surfaces of ferric and manganese oxides and oxyhydroxides, the prevailing components of natural geochemical barriers, has been studied in the presence of filamentous fungus. Both geoactive phases were exposed to selenate and subsequently to growing fungus Aspergillus niger for three weeks. This common soil fungus has shown exceptional ability to alter the distribution and mobility of selenium in the presence of both solid phases. The fungus initiated the extensive bioextraction of selenium from the surfaces of amorphous ferric oxyhydroxides, while the hausmannite (Mn3O4) was highly susceptible to biodeterioration in the presence of selenium. This resulted in specific outcomes regarding the selenium, iron, and manganese uptake by fungus and residual selenium concentrations in mineral phases as well. The adverse effects of bioleaching on fungal growth are also discussed.

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Section: Discussionmentioning

confidence: 80%

Fungal Mobilization of Selenium in the Presence of Hausmannite and Ferric Oxyhydroxides

Farkas

Vojtková

Bujdoš

et al. 2021

JoF

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“…As for Eh, it is an index reflecting the redox status in soil solution, which is linked to the degree of soil aeration and the availability of soil nutrients 58 . It has been shown that at low redox potentials, Cd precipitates as cadmium sulfide and the amount of Cd absorbed by plants is significantly reduced 59 . The addition of chelating agent to copper tailings can effectively enhance the Eh of copper tailings, but the enhancement decreases with the increase of chelating agent concentration.…”

Section: Discussionmentioning

confidence: 99%

Extraction of heavy metals from copper tailings by ryegrass (Lolium perenne L.) with the assistance of degradable chelating agents

Wang,

Xue,

Zhang

et al. 2024

Sci Rep

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Heavy metal contamination is an urgent ecological governance problem in mining areas. In order to seek for a green and environmentally friendly reagent with better plant restoration effect to solve the problem of low efficiency in plant restoration in heavy metal pollution soil. In this study, we evaluated the effects of three biodegradable chelating agents, namely citric acid (CA), fulvic acid (FA) and polyaspartic acid (PASP), on the physicochemical properties of copper tailings, growth of ryegrass (Lolium perenne L.) and heavy metal accumulation therein. The results showed that the chelating agent application improved the physicochemical properties of copper tailings, increased the biomass of ryegrass and enriched more Cu and Cd in copper tailings. In the control group, the main existing forms of Cu and Cd were oxidizable state, followed by residual, weak acid soluble and reducible states. After the CA, FA or PASP application, Cu and Cd were converted from the residual and oxidizable states to the reducible and weak acid soluble states, whose bioavailability in copper tailings were thus enhanced. Besides, the chelating agent incorporation improved the Cu and Cd extraction efficiencies of ryegrass from copper tailings, as manifested by increased root and stem contents of Cu and Cd by 30.29–103.42%, 11.43–74.29%, 2.98–110.98% and 11.11–111.11%, respectively, in comparison with the control group. In the presence of multiple heavy metals, CA, FA or PASP showed selectivity regarding the ryegrass extraction of heavy metals from copper tailings. PCA analysis revealed that the CA-4 and PASP-7 treatment had great remediation potentials against Cu and Cd in copper tailings, respectively, as manifested by increases in Cu and Cd contents in ryegrass by 90.98% and 74.29% compared to the CK group.

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“…In this case, a slight increase in C was quantified by EDS (Table 2), contrary to the possibly very small increase below the quantification limit of the EDS system in the first case. These enrichments are possibly associated with AS1 oxalate and other acid excretions, since this ligand is known to be able to form strong complexes with Al and enhance silicate dissolution [27,28] and extraction from mineral lattice by fungal exometabolites [29,30], which could likely be extended to the current scenario.…”

Section: Glassmentioning

confidence: 98%

“…On the one hand, in the case of AS1, the apparent dissolution and redeposition of elements such as Mg, Zn, and Al increased significantly over time with the growth of the biomass (see Table 3). Species of the same genera have been reported to possess the ability to promote dissolution and complexation processes with aluminium, as well as zinc [29,41,46]. The ability of this genera to acidify its micro-environment and exude high quantities of low molecular weight organic acids, which results in the extraction of relevant concentrations of aluminium from mineral phases, has been reported [29].…”

Section: Measuring Damage: Two Species One Glassmentioning

confidence: 99%

From Biodeterioration to Creativity: Bioreceptivity of Spruce Pine 87 Glass Batch by Fungi

Rodrigues¹,

Alves

Gutierrez-Patricio

et al. 2022

Applied Sciences

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The bioreceptivity, and the consequent biodeterioration of contemporary glass, used by artists worldwide, was studied. The two main objectives were: first, to verify if fungi with some culture media would produce more damages than the same fungi without a nutritional source, and to verify if the two genera of fungi produce the same damage on the same glass. Colourless glass samples with Spruce Pine 87 Batch (SPB-87) composition were inoculated with two distinct fungal species, Penicillium chrysogenum and Aspergillus niger, separately: (i) half with fungal spores (simulating primary bioreceptivity), and (ii) half with fungi in a small portion of culture media (simulating organic matter that can be deposited on exposed glassworks, i.e., secondary bioreceptivity). The alteration of glass surfaces were analysed by Optical Microscopy, SEM-EDS and µ-Raman. The mycelium of Penicillium chrysogenum generated a higher amount of fingerprints, stains and iridescence, whereas Aspergillus niger produced more biopitting and crystals on the glass surface. However, both species damaged the glass to different degrees in 4 and 6 months after the inoculation, producing physico-chemical damage (e.g., iridescence, biopitting), and chemical alterations (e.g., depletion and deposition of elements and crystals). The primary bioreceptivity experiment of glass samples inoculated with Aspergillus niger results in less damage than in the case of secondary bioreceptivity, being almost similar for Penicillium chrysogenum. The new and in-depth understanding of the bioreceptivity and deterioration of post-modern glass art and cultural heritage provided here is of paramount importance for the scientific, conservation and artistic communities – to protect glass cultural materials, or seen by artists as innovative and inspirational ways of creating glass art in the future.

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Evaluation of aluminium mobilization from its soil mineral pools by simultaneous effect of Aspergillus strains' acidic and chelating exometabolites

Cited by 15 publications

References 37 publications

Fungal Mobilization of Selenium in the Presence of Hausmannite and Ferric Oxyhydroxides

Fungal Mobilization of Selenium in the Presence of Hausmannite and Ferric Oxyhydroxides

Extraction of heavy metals from copper tailings by ryegrass (Lolium perenne L.) with the assistance of degradable chelating agents

From Biodeterioration to Creativity: Bioreceptivity of Spruce Pine 87 Glass Batch by Fungi

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