Oxalate production by fungi: significance in geomycology, biodeterioration and bioremediation

Gadd, Geoffrey M.; Bahri-Esfahani, Jaleh; Li, Qianwei; Rhee, Young Joon; Zhan, Wei; Fomina, Marina; Liang, Xinjin

doi:10.1016/j.fbr.2014.05.001

Cited by 305 publications

(224 citation statements)

References 222 publications

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“…This work examined the stability of natural mimetite [Pb 5 (AsO 4 ) 3 Cl] in the presence of the ubiquitous soil fungus Aspergillus niger, which possesses well-known geoactive properties (1,2,39,40,(44)(45)(46)(47)(48)(49)(50)(51)(52)(53), including citric, gluconic, and oxalic acid production (51,54,55). Experiments clearly revealed the complete bioweathering of a pure natural mimetite by the fungus and the simultaneous bioprecipitation of pure lead oxalate [Pb(C 2 O 4 )] as a new mycogenic biomineral ( Fig.…”

Section: Discussionmentioning

confidence: 99%

“…The organism used for the bioleaching tests was Aspergillus niger van Tieghem (ATCC 201373), from the culture collection of the Geomicrobiology Group (University of Dundee). A. niger was chosen because it has been shown to have significant geoactive properties in mineral bioweathering of the lead apatites pyromorphite and vanadinite (1,2,39,40,(44)(45)(46)(47)(48)(49)(50)(51)(52)(53). Moreover, this fungus is a common soil saprotroph and can produce substantial amounts of organic acids, e.g., oxalic, citric, and gluconic acids (51,54,55 15.…”

Section: Methodsmentioning

confidence: 99%

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Fungal Bioweathering of Mimetite and a General Geomycological Model for Lead Apatite Mineral Biotransformations

Ceci

Kierans

Hillier

et al. 2015

Appl Environ Microbiol

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f Fungi play important roles in biogeochemical processes such as organic matter decomposition, bioweathering of minerals and rocks, and metal transformations and therefore influence elemental cycles for essential and potentially toxic elements, e.g., P, S, Pb, and As. Arsenic is a potentially toxic metalloid for most organisms and naturally occurs in trace quantities in soil, rocks, water, air, and living organisms. Among more than 300 arsenic minerals occurring in nature, mimetite [ . Despite the insolubility of mimetite, the organic acid-producing soil fungus Aspergillus niger was able to solubilize mimetite with simultaneous precipitation of lead oxalate as a new mycogenic biomineral. Since fungal biotransformation of both pyromorphite and vanadinite has been previously documented, a new biogeochemical model for the biogenic transformation of lead apatites (mimetite, pyromorphite, and vanadinite) by fungi is hypothesized in this study by application of geochemical modeling together with experimental data. The models closely agreed with experimental data and provided accurate simulation of As and Pb complexation and biomineral formation dependent on, e.g., pH, cation-anion composition, and concentration. A general pattern for fungal biotransformation of lead apatite minerals is proposed, proving new understanding of ecological implications of the biogeochemical cycling of component elements as well as industrial applications in metal stabilization, bioremediation, and biorecovery. F ungi actively contribute to many important geological processes (1-5). Biotransformations and the biogeochemical cycling of elements, metal and mineral transformations, organic matter decomposition, bioweathering, and soil and sediment formation are some of their most important geoactive roles (1-6). Fungal involvement in biogeochemical cycling of essential and potentially toxic elements (e.g., carbon, nitrogen, phosphorus, sulfur, metals, and metalloids) is clear and interlinked with their abilities to adopt a variety of growth, metabolic, and morphological strategies (1-3, 6-12). Fungi are particularly involved in metal biogeochemistry, with a variety of processes determining mobility, and therefore bioavailability, and immobility, leading to formation of secondary minerals and metal stabilization (1-7, 11-13).Arsenic is an element belonging to group V-A and is a metalloid possessing both metallic and nonmetallic properties. Arsenic is widely distributed in the Earth's crust, with an average concentration of 2 to 5 mg kg Ϫ1 , and is associated primarily with igneous and sedimentary rocks in the form of inorganic arsenic compounds (14-17). Arsenic therefore naturally occurs in trace quantities in the lithosphere, hydrosphere, and atmosphere and in all living organisms, where it can be acutely toxic because of its similarity to inorganic phosphate and its affinity for protein thiols (14-16, 18, 19). Arsenate (AsO 4 3Ϫ ) is an analogue of essential phosphate (PO 4 3Ϫ ) and can be taken up via phosphate transport systems in most orga...

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Fungal Bioweathering of Mimetite and a General Geomycological Model for Lead Apatite Mineral Biotransformations

Ceci

Kierans

Hillier

et al. 2015

Appl Environ Microbiol

Self Cite

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“…Fungal activities in rock and mineral transformations can therefore lead to increased mobility of such elements, and other minor crustal components, as well as the formation of secondary mineral products. Fungi can play a role in the dissolution of common minerals including carbonates, phosphates and silicates and less common compounds including oxides and oxalates (Gadd 2010; Gadd et al 2014; Bindschedler et al 2016). Lichens are a symbiosis of a fungus with either a cyanobacterium or a trebouxian green algae (see earlier) and actively digest rock surfaces.…”

Section: Types Of Substrates and Mechanisms For Penetrationmentioning

confidence: 99%

“…Biogenic organic acids are very effective in mineral dissolution and are one of the most damaging agents affecting mineral substrates (Gadd 2007). Of the suite of organic acids produced by fungi, oxalate is of major significance through metal complexation and dissolution effects as well as causing physical damage by formation of secondary metal oxalates expanding in pores and fissures (Gadd et al 2014). Citric and gluconic acid are other significant fungal metabolites.…”

Section: The Specific Ecological Roles Of Scleractinian Corals On Cormentioning

confidence: 99%

The roles of endolithic fungi in bioerosion and disease in marine ecosystems. I. General concepts

et al. 2017

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Endolithic true fungi and fungus-like microorganisms penetrate calcareous substrates formed by living organisms, cause significant bioerosion and are involved in diseases of many host animals in marine ecosystems. A theoretical interactive model for the ecology of reef-building corals is proposed in this review. This model includes five principle partners that exist in a dynamic equilibrium: polyps of a colonial coelenterate, endosymbiotic zooxanthellae, endolithic algae (that penetrate coral skeletons), endolithic fungi (that attack the endolithic algae, the zooxanthellae and the polyps) and prokaryotic and eukaryotic microorganisms (which live in the coral mucus). Endolithic fungi and fungus-like boring microorganisms are important components of the marine calcium carbonate cycle because they actively contribute to the biodegradation of shells of animals composed of calcium carbonate and calcareous geological substrates.

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“…Filamentous fungi may cause both mechanical and chemical deterioration of stone [18]. Mechanical deterioration of stone is achieved via hyphal penetration, which causes breakup and fragmentation [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Environmental Factors on Rock-inhabiting Fungal Communities from Brazilian Soapstone Sampleshttp://www.davidpublisher.org/index.php/Home/Article/index?id=31207.html

Boniek¹,

Oliveira²,

Ribeiro³

et al. 2017

JESE-B

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Abstract:The present study aims to evaluate the environmental effect on fungal community composition associated with biodeterioration occurring in stones (soapstone) at two distinct locations in Minas Gerais State, Brazil: Congonhas city and Sanctuary of Caraça. Four collections of fungal communities over one year were obtained from both research sites from the soapstone block surfaces exposed for over two decades. The molecular diversity profile of the fungal community at the two localities was obtained by DGGE (Denaturing Gradient Gel Electrophoresis), and the genomes of the most representative population were sequenced. DGGE showed the formation of two clusters with filamentous fungal communities. Sequencing of the most representative bands revealed the presence of fungi associated with the biodeterioration of soapstone. In addition, many of the identified species were associated with photobionts that could generate lichens, indicating that environmental characteristics affect the occurrence of filamentous fungi, which leads to biodeterioration of stones. Authors' study focused on an environmental variation of an extreme habitat for fungi associated with soapstone in the state of Minas Gerais, Brazil and identified the presence of interesting rock-inhabiting fungal communities including species related to lichens, which can accelerate the deterioration of stones by the production of organic acids.

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Oxalate production by fungi: significance in geomycology, biodeterioration and bioremediation

Cited by 305 publications

References 222 publications

Fungal Bioweathering of Mimetite and a General Geomycological Model for Lead Apatite Mineral Biotransformations

Fungal Bioweathering of Mimetite and a General Geomycological Model for Lead Apatite Mineral Biotransformations

The roles of endolithic fungi in bioerosion and disease in marine ecosystems. I. General concepts

Effect of Environmental Factors on Rock-inhabiting Fungal Communities from Brazilian Soapstone Sampleshttp://www.davidpublisher.org/index.php/Home/Article/index?id=31207.html

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