Prerequisites and susceptibility of humic acids to microbial utilization and transformation – a review

Filip, Z.; Bielek, Pavol; Demnerova, Kateřina

doi:10.1080/03650340802172491

Cited by 2 publications

(3 citation statements)

References 20 publications

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“…It is generally accepted that HSs are composed mainly of aromatic, aliphatic, phenolic, quinonic, and N-derived components, which are covalently bound through C–C, C–O–C, and N–C bonds. HSs have an abundance of oxygen-containing functional groups (carboxyl, phenol, alcoholic ketone, ester, and ether), which dominate their properties and structure [ 10 , 46 ].…”

Section: Humic Substances As a Complex Molecular Systemmentioning

confidence: 99%

“…The HSs can bind not only toxicants but also nutrients [ 4 , 46 , 53 ]. Nitrogen (N) can be incorporated into HSs both in the form of neutral and protonated NH 2 groups in amino acids and sugars, as well as NH 4 + [ 54 ].…”

Section: Humic Substances As a Complex Molecular Systemmentioning

confidence: 99%

“…The reported values of the content of Ca, Mg, Fe, Mn, and Zn in soil HSs are in the ranges of 0.3–5.6 mg/g, 0.1–0.4 mg/g, 0.3–2.2 mg/g, 0.1–1.3 mg/g, and 0.02–0.3 mg/g, respectively [ 57 ]. Prerequisites for the susceptibility of humic acids to microbial utilization and transformation with various metal contents were summarized in [ 46 ]. The peculiar properties of HSs described above indicate that they can be a source of nutrients for microorganisms.…”

Section: Humic Substances As a Complex Molecular Systemmentioning

confidence: 99%

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Interactions between Humic Substances and Microorganisms and Their Implications for Nature-like Bioremediation Technologies

Куликова

Perminova

2021

Molecules

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The state of the art of the reported data on interactions between microorganisms and HSs is presented herein. The properties of HSs are discussed in terms of microbial utilization, degradation, and transformation. The data on biologically active individual compounds found in HSs are summarized. Bacteria of the phylum Proteobacteria and fungi of the phyla Basidiomycota and Ascomycota were found to be the main HS degraders, while Proteobacteria, Actinobacteria, Bacteroidetes, and Firmicutes were found to be the predominant phyla in humic-reducing microorganisms (HRMs). Some promising aspects of interactions between microorganisms and HSs are discussed as a feasible basis for nature-like biotechnologies, including the production of enzymes capable of catalyzing the oxidative binding of organic pollutants to HSs, while electron shuttling through the utilization of HSs by HRMs as electron shuttles may be used for the enhancement of organic pollutant biodegradation or lowering bioavailability of some metals. Utilization of HSs by HRMs as terminal electron acceptors may suppress electron transfer to CO2, reducing the formation of CH4 in temporarily anoxic systems. The data reported so far are mostly related to the use of HSs as redox compounds. HSs are capable of altering the composition of the microbial community, and there are environmental conditions that determine the efficiency of HSs. To facilitate the development of HS-based technologies, complex studies addressing these factors are in demand.

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Section: Humic Substances As a Complex Molecular Systemmentioning

confidence: 99%

Section: Humic Substances As a Complex Molecular Systemmentioning

confidence: 99%

Section: Humic Substances As a Complex Molecular Systemmentioning

confidence: 99%

See 1 more Smart Citation

Interactions between Humic Substances and Microorganisms and Their Implications for Nature-like Bioremediation Technologies

Куликова

Perminova

2021

Molecules

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Humus-reducing microorganisms and their valuable contribution in environmental processes

Martínez

Álvarez

Celis

et al. 2013

Appl Microbiol Biotechnol

110

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Humus constitutes a very abundant class of organic compounds that are chemically heterogeneous and widely distributed in terrestrial and aquatic environments. Evidence accumulated during the last decades indicating that humic substances play relevant roles on the transport, fate, and redox conversion of organic and inorganic compounds both in chemically and microbially driven reactions. The present review underlines the contribution of humus-reducing microorganisms in relevant environmental processes such as biodegradation of recalcitrant pollutants and mitigation of greenhouse gases emission in anoxic ecosystems, redox conversion of industrial contaminants in anaerobic wastewater treatment systems, and on the microbial production of nanocatalysts and alternative energy sources.

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Prerequisites and susceptibility of humic acids to microbial utilization and transformation – a review

Cited by 2 publications

References 20 publications

Interactions between Humic Substances and Microorganisms and Their Implications for Nature-like Bioremediation Technologies

Interactions between Humic Substances and Microorganisms and Their Implications for Nature-like Bioremediation Technologies

Humus-reducing microorganisms and their valuable contribution in environmental processes

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