Taxonomic composition and physiological and biochemical properties of bacteria in the digestive tracts of earthworms

Byzov, B. A.; Tikhonov, V. V.; Nechitailo, T. Yu.; Демин, В. В.; Zvyagintsev, D. G.

doi:10.1134/s1064229315030035

Cited by 17 publications

(13 citation statements)

References 20 publications

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“…However, there is increasing evidence that the effect of earthworms on soil functions may be mediated through soil microbial communities (Figure 1, arrow 2). It is yet not clear how the different ecological groups may promote or select soil microorganisms and there are many contradictory results concerning the effect of earthworms on soil microbial communities (Byzov et al, 2015). However, the drilosphere is generally acknowledged as being a soil hotspot with a positive effect on ecosystem functions such as nutrient cycling and plant growth Scheu, 2003;Van Groenigen et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Earthworms Building Up Soil Microbiota, a Review

Medina-Sauza

Álvarez-Jiménez

Delhal

et al. 2019

Front. Environ. Sci.

233

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Section: Introductionmentioning

confidence: 99%

Earthworms Building Up Soil Microbiota, a Review

Medina-Sauza

Álvarez-Jiménez

Delhal

et al. 2019

Front. Environ. Sci.

233

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“…Hutalle-Schmelzer and Grossart [ 106 ] found that the addition of HSs favored the growth of Betaproteobacteria (namely Polynucleobacter , Acidovorax , Herbaspirillum , and Methylophilus species). Recently, several isolates of Alphaproteobacteria and Gammaproteobacteria were found to grow on media containing HSs as the sole carbon source [ 6 , 107 ]. Some genera of HS-degrading bacteria are presented in Table 2 .…”

Section: Utilization Degradation and Transformation Of Hss By Bacteriamentioning

confidence: 99%

“…HS-degrading bacteria can be mostly affiliated with the Gram-negative Proteobacteria ( Table 2 ) with an outer membrane containing lipopolysaccharides. Among Proteobacteria, the class Alphaproteobacteria can be mainly found [ 6 , 100 , 101 , 107 ]. These bacteria can grow at very low levels of nutrients and have unusual morphologies, such as stalks and buds [ 118 ].…”

Section: Utilization Degradation and Transformation Of Hss By Bacteriamentioning

confidence: 99%

“…These bacteria can grow at very low levels of nutrients and have unusual morphologies, such as stalks and buds [ 118 ]. Betaproteobacteria is another class of humic-degrading bacteria [ 106 , 107 , 108 ]. It often uses nutrients that diffuse from areas of anaerobic decomposition of organic matter (hydrogen gas, ammonia, methane) and includes chemoautotrophs.…”

Section: Utilization Degradation and Transformation Of Hss By Bacteriamentioning

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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“…Then, the degradation of toluene would occur inside the earthworm. Several hundred bacterial strains belonging to different taxa have been isolated and identified from the digestive tracts of soil and compost earthworms [49].…”

Section: Figure 4: Mechanism Of Toluene Degradation By Vermicompostmentioning

confidence: 99%

Proposed mechanisms of toluene removal by vermicompost and earthworms Eisenia fetida

Lusinier

Couriol

Cloirec

2019

Environmental Technology

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For potential use in air treatment by biofiltration, a new material composed of vermicompost and earthworms (Eisenia fetida) was tested for the removal of a volatile organic compound (VOC), toluene. The removal rate of toluene was measured during batch experiments in presence of vermicompost only, earthworms only and a mixture of both. In the chosen experimental conditions, no mortality of earthworms was recorded and the results showed that the presence of earthworms allowed an increase in toluene removal rate (0.213 mg.h -1 ) compared to vermicompost only (0.084 mg.h -1) and earthworms only (0.136 mg.h -1 ). From the experimental data, mechanisms of toluene transfer and adsorption/biodegradation by microorganisms from vermicompost and/or earthworms were proposed.

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Taxonomic composition and physiological and biochemical properties of bacteria in the digestive tracts of earthworms

Cited by 17 publications

References 20 publications

Earthworms Building Up Soil Microbiota, a Review

Earthworms Building Up Soil Microbiota, a Review

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

Proposed mechanisms of toluene removal by vermicompost and earthworms Eisenia fetida

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