Solubilization of toxic metal minerals and metal tolerance of mycorrhizal fungi

Fomina, Marina; Alexander, Ian J.; Colpaert, Jan; Gadd, Geoffrey Michael

doi:10.1016/j.soilbio.2004.10.013

Cited by 226 publications

(144 citation statements)

References 41 publications

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“…Mobilization involves all the mechanisms leading to the transfer of mineral constituents into solutions. These processes are crucial, for instance, for nutrient bioavailability in the biosphere but can also lead to the release of toxic compounds in the environment [32,47]. Mobilization of metals and minerals by fungi involves both mechanical and biochemical processes, with the latter considered as being more important in terms of the amounts of released material.…”

Section: Importance Of Fungi In the Biogeochemical Cycles Of Elementsmentioning

confidence: 99%

Role of Fungi in the Biomineralization of Calcite

2016

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Abstract:In the field of microbial biomineralization, much of the scientific attention is focused on processes carried out by prokaryotes, in particular bacteria, even though fungi are also known to be involved in biogeochemical cycles in numerous ways. They are traditionally recognized as key players in organic matter recycling, as nutrient suppliers via mineral weathering, as well as large producers of organic acids such as oxalic acid for instance, an activity leading to the genesis of various metal complexes such as metal-oxalate. Their implications in the transformation of various mineral and metallic compounds has been widely acknowledged during the last decade, however, currently, their contribution to the genesis of a common biomineral, calcite, needs to be more thoroughly documented. Calcite is observed in many ecosystems and plays an essential role in the biogeochemical cycles of both carbon (C) and calcium (Ca). It may be physicochemical or biogenic in origin and numerous organisms have been recognized to control or induce its biomineralization. While fungi have often been suspected of being involved in this process in terrestrial environments, only scarce information supports this hypothesis in natural settings. As a result, calcite biomineralization by microbes is still largely attributed to bacteria at present. However, in some terrestrial environments there are particular calcitic habits that have been described as being fungal in origin. In addition to this, several studies dealing with axenic cultures of fungi have demonstrated the ability of fungi to produce calcite. Examples of fungal biomineralization range from induced to organomineralization processes. More examples of calcite biomineralization related to direct fungal activity, or at least to their presence, have been described within the last decade. However, the peculiar mechanisms leading to calcite biomineralization by fungi remain incompletely understood and more research is necessary, posing new exciting questions linked to microbial biomineralization processes.

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Section: Importance Of Fungi In the Biogeochemical Cycles Of Elementsmentioning

confidence: 99%

Role of Fungi in the Biomineralization of Calcite

2016

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“…and Rhizophagus irregularis (Błaszk., Wubet, Renker and Buscot) C. Walker and A. Schüßler in association with carrot roots] are able to compartmentalize Cu in spores as a survival strategy in polluted environments. Additionally, microfungi are essential in colonizing and detoxifying metal-contaminated soil ecosystems and consequently have environmental and economic significance [16,[26][27][28].…”

Section: Biodiversity In Metal-contaminated Sitesmentioning

confidence: 99%

Biodiversity in Metal-Contaminated Sites – Problem and Perspective – A Case Study

Roccotiello¹,

Marescotti²,

Piazza³

et al. 2015

Biodiversity in Ecosystems - Linking Structure and Function

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Summary 1. Introduction. 1.1 Biodiversity in metal-contaminated sites. 1.2 Selecting native fungi and plants for bioremediation. 2. Case study – Multidisciplinary investigations on biodiversity into a sulphide-rich waste-rock dump. Conclusion: The enormous potential of native fungi and plants that are able to colonize metal-contaminated soils need to be studied in-depth in order to preserve the natural genetic resources of metalliferous habitats and to increase our basic knowledge about the natural adaptation mechanisms of hyperaccumulators in order to employ them in phytoremediation purposes

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“…Benefits to the plant include for instance improved nutrition through phosphorus minerals solubilization. Note that this solubilization can result in release of the associated metals (Fomina et al 2005). In addition, AM fungi have been shown to enhance tolerance of biotic and abiotic stresses, including heavy metals (Leyval et al 1997): as they are a direct link between soil and roots, they can be very important for heavy metal availability and toxicity to plants (Leyval et al 1997).…”

Section: Bioavailability and Phytoremediationmentioning

confidence: 99%

Developments in Bioremediation of Soils and Sediments Polluted with Metals and Radionuclides. 3. Influence of Chemical Speciation and Bioavailability on Contaminants Immobilization/Mobilization Bio-processes

Hullebusch

Lens

Tabak

2005

Rev Environ Sci Biotechnol

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The biotransformation of metals is an exciting, developing strategy to treat metal contamination, especially in environments that are not accessible to other remediation technologies. However, our ability to benefit from these strategies hinges on our ability to monitor these transformations in the environment. That's why remediation of contaminated sediments and soil requires detailed in situ characterization of the speciation of the toxic substances and their transformations with respect to time and spatial distribution. The present paper gives an overview of the literature regarding research performed in the laboratory as well as in the field.

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Solubilization of toxic metal minerals and metal tolerance of mycorrhizal fungi

Cited by 226 publications

References 41 publications

Role of Fungi in the Biomineralization of Calcite

Role of Fungi in the Biomineralization of Calcite

Biodiversity in Metal-Contaminated Sites – Problem and Perspective – A Case Study

Developments in Bioremediation of Soils and Sediments Polluted with Metals and Radionuclides. 3. Influence of Chemical Speciation and Bioavailability on Contaminants Immobilization/Mobilization Bio-processes

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