Chemical and Physical Mechanisms of Fungal Bioweathering of Rock Phosphate

Mendes, Gilberto de Oliveira; Bahri-Esfahani, Jaleh; Csetényi, László; Hillier, S. J.; George, Timothy S.; Gadd, Geoffrey Michael

doi:10.1080/01490451.2020.1863525

Cited by 18 publications

(19 citation statements)

References 88 publications

(122 reference statements)

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“…Furthermore, a large amount of the P applied to the soil as fertilizer rapidly becomes unavailable for plant uptake, creating a situation where crop yield may be compromised (Roberts and Johnston, 2015;Zhu et al, 2018). Amongst the soil microorganisms, certain bacterial and fungal genera have the ability to solubilize phosphate from inorganic insoluble forms, mainly through acidification mechanisms (production of low molecular weight organic acids and H + extrusion) and chelation of metals previously linked to phosphates (through organic ligands), thereby increasing P availability to plants (Costa et al, 2015;Gadd, 1999;Mendes et al, 2020;Narsian and Patel, 2000). Moreover, few studies have tested the compatibility of different functional microorganisms, especially phosphate-solubilizing fungi and symbiotic nitrogen-fixing bacterial strains to perform together both processes in order to enhance plant growth and nutrition (Abd-Alla and Omar, 2001;Zaidi and Khan, 2006).…”

Section: Introductionmentioning

confidence: 99%

Phosphate–solubilizing fungi co–inoculated with Bradyrhizobium promote cowpea growth under varying N and P fertilization conditions

Gomezjurado¹,

Leite

Carvalho

et al. 2022

Sci. agric. (Piracicaba, Braz.)

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We evaluated the compatibility between two nitrogen-fixing Bradyrhizobium inoculant strains and phosphate-solubilizing fungal strains and the effect of co-inoculation of these bacterial and fungal strains on cowpea growth under different N and P conditions.First, the compatibility between Bradyrhizobium strains UFLA03-84 and INPA03-11B and fungi Haematonectria ipomoeae FSA381, Eleutherascus lectardii FSA257a, Pochonia chlamydosporia var. catenulata FSA109, and Acremonium polychromum FSA115 was tested in both solid and liquid media. Cowpea growth and nodulation promotion under two mineral N doses and two P conditions (a low dose of soluble P plus a high dose of Ca 3 (PO 4 ) 2 and another condition with a high dose of soluble P) were tested with two N 2 fixing Bradyrhizobium strains co-inoculated with each of the P-solubilizing fungal strains FSA109, FSA115, and FSA381. There was compatibility between each fungal strain and the two Bradyrhizobium strains, except for FSA257a with either of the bacterial strains in liquid medium. When both mineral N and P were limiting, plants were able to grow and accumulate N and P based on biological N 2 fixation and solubilization of calcium phosphate in the same amount as the mineral N and soluble phosphate. Even when both nutrients were fully available, the type of co-inoculation promoted plant growth and nutrient accumulation.The responses varied in accordance with the co-inoculated strains, the N source, and the P source, reflecting the enormous complexity of the biological interactions between plants and microorganisms, and the nutrient conditions provided by the environment.

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Section: Introductionmentioning

confidence: 99%

Phosphate–solubilizing fungi co–inoculated with Bradyrhizobium promote cowpea growth under varying N and P fertilization conditions

Gomezjurado¹,

Leite

Carvalho

et al. 2022

Sci. agric. (Piracicaba, Braz.)

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“…Geoactive fungi play an important role in the biomineralization of a broad range of minerals and have been investigated for their potential in the recycling of elements and biosynthesis of new biomaterials (Gadd 2007 ; Liang and Gadd 2017 ; Kang et al 2020 , 2021 ). The fundamental mechanisms behind fungal biomineralization involve the production of metabolites such as oxalate and carbon dioxide, or the release of ligands like carbonates and phosphates from organic and inorganic sources, as well as proteins and enzymes that can directly interact with the metal/mineral (Gadd 2007 , 2010 ; Li et al 2014 ; Kumari et al 2016 ; Dhami et al 2017 ; Fomina et al 2007 ; Liu et al 2019 ; Kirtzel et al 2020 ; Kang et al 2020 , 2021 ; Mendes et al 2021a , b ; Liu et al 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Solubilization of struvite and biorecovery of cerium by Aspergillus niger

Kang

Csetényi

Gao

et al. 2022

Appl Microbiol Biotechnol

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Cerium has many modern applications such as in renewable energies and the biosynthesis of nanomaterials. In this research, natural struvite was solubilized by Aspergillus niger and the biomass-free struvite leachate was investigated for its ability to recover cerium. It was shown that struvite was completed solubilized following 2 weeks of fungal growth, which released inorganic phosphate (Pi) from the mineral by the production of oxalic acid. Scanning electron microscopy (SEM) showed that crystals with distinctive morphologies were formed in the natural struvite leachate after mixing with Ce3+. Energy-dispersive X-ray analysis (EDXA), X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) confirmed the formation of cerium phosphate hydrate [Ce(PO4)·H2O] at lower Ce concentrations and a mixture of phosphate and cerium oxalate decahydrate [Ce2(C2O4)3·10H2O] at higher Ce concentrations. The formation of these biogenic Ce minerals leads to the removal of > 99% Ce from solution. Thermal decomposition experiments showed that the biogenic Ce phosphates could be transformed into a mixture of CePO4 and CeO2 (cerianite) after heat treatment at 1000 °C. These results provide a new perspective of the fungal biotransformation of soluble REE species using struvite leachate, and also indicate the potential of using the recovered REE as biomaterial precursors with possible applications in the biosynthesis of novel nanomaterials, elemental recycling and biorecovery. Key points • Cerium was recovered using a struvite leachate produced by A. niger. • Oxalic acid played a major role in struvite solubilization and Ce phosphate biorecovery. • Resulting nanoscale mineral products could serve as a precursor for Ce oxide synthesis.

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“…phosphate, sulfate, as well as essential, inessential and potentially-toxic metals, e.g. Na, K, Mg, Ca, Mn, Fe, Cu, Zn, Co, Ni, Al, Cs, Cd, Hg, Pb, U) (Burford et al, 2003;Fomina et al, 2007;Gadd, 2007Gadd, , 2010Rhee et al, 2012;Ceci et al, 2015;Liang et al, 2015;Yang et al, 2019;Mendes et al, 2020). While mineral bioweathering by fungi can be mediated by often synergistic interactions between biophysical and biochemical mechanisms, the secretion of mycogenic organic acids is central to such processes (Gadd, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…While mineral bioweathering by fungi can be mediated by often synergistic interactions between biophysical and biochemical mechanisms, the secretion of mycogenic organic acids is central to such processes (Gadd, 1999). Oxalic acid secretion is of particular significance and is implicated in the transformation and solubilization of a range of mineral phases including carbonates, phosphates, arsenates, silicates, sulfides and oxides (Sayer and Gadd, 2001;Fomina et al, 2004Fomina et al, , 2007Burford et al, 2006;Wei et al, 2012Wei et al, , 2013Ceci et al, 2015;Ferrier et al, 2019;Suyamud et al, 2020;Mendes et al, 2020). Oxalic acid can attack minerals by both acidolysis and complexolysis (ligand mediated dissolution) as the oxalate anion (C 2 O 4 2À ) is a bidentate ligand capable of forming soluble complexes with a range of mono, di, tri and tetravalent cations (Gadd, 1999(Gadd, , 2007(Gadd, , 2010Gadd et al, 2014;Verma et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Factors that determine soluble complex formation or oxalate precipitation include the valence state of the cation, the relative abundance of oxalate anions and metals in solution, pH and stability constants of the oxalate complexes (Gadd, 1999;Verma et al, 2019) For example, simple oxalates containing divalent cations are sparingly soluble or insoluble and readily precipitate over a wide range of pH values (e.g. Ca, Mg, Mn, Co, Ni, Cu) but may also form complexes in the presence of excess oxalate, while trivalent metals such as Al(III) and Fe(III) only exist as soluble complexes (Gadd, 1999;Gadd et al, 2014;Verma et al, 2019;Kang et al, 2019Kang et al, , 2020Kang et al, , 2021Mendes et al, 2020). In addition, oxalate is a reductant which can effect the reduction of some metal species, including Mn(III,IV) to Mn(II), through oxalate precipitation (Wei et al, 2012;Verma et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fungal transformation of natural and synthetic cobalt‐bearing manganese oxides and implications for cobalt biogeochemistry

Ferrier

Csetényi

Gadd

2021

Environmental Microbiology

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Manganese oxide minerals can become enriched in a variety of metals through adsorption and redox processes, and this forms the basis for a close geochemical relationship between Mn oxide phases and Co. Since oxalate-producing fungi can effect geochemical transformation of Mn oxides, an understanding of the fate of Co during such processes could provide new insights on the geochemical behaviour of Co. In this work, the transformation of Mn oxides by Aspergillus niger was investigated using a Co-bearing manganiferous laterite, and a synthetic Co-doped birnessite. A. niger could transform laterite in both fragmented and powder forms, resulting in formation of biomineral crusts that were composed of Mn oxalates hosting Co, Ni and, in transformed laterite fragments, Mg. Total transformation of Co-doped birnessite resulted in precipitation of Co-bearing Mn oxalate. Fungal transformation of the Mn oxide phases included Mn(III,IV) reduction by oxalate, and may also have involved reduction of Co(III) to Co(II). These findings demonstrate that oxalate-producing fungi can influence Co speciation in Mn oxides, with implications for other hosted metals including Al and Fe. This work also provides further understanding of the roles of fungi as geoactive agents which can inform potential applications in metal bioremediation, recycling and biorecovery.

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Chemical and Physical Mechanisms of Fungal Bioweathering of Rock Phosphate

Cited by 18 publications

References 88 publications

Phosphate–solubilizing fungi co–inoculated with Bradyrhizobium promote cowpea growth under varying N and P fertilization conditions

Phosphate–solubilizing fungi co–inoculated with Bradyrhizobium promote cowpea growth under varying N and P fertilization conditions

Solubilization of struvite and biorecovery of cerium by Aspergillus niger

Fungal transformation of natural and synthetic cobalt‐bearing manganese oxides and implications for cobalt biogeochemistry

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