Microbial degradation and transformation of humic acids from permanent meadow and forest soils

Filip, Z.; Tesařová, Marta

doi:10.1016/j.ibiod.2004.06.006

Cited by 33 publications

(23 citation statements)

References 15 publications

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“…The HA structures were in the form of aromatic C, aliphatic C and small-molecule carbohydrates, among these forms, aromatic C accounted for the largest fraction, and its utilization depended on the degradation capacity of HA-degrading bacteria. Some studies (Filip, Tesařová, 2004;Chistyakov et al, 2013) had shown that the aromatic C structure of HA exhibited a strong resistance to degradation and was difficult for microbes to use, which agreed with the present study. Moreover, small-molecular aliphatic compounds and polysaccharides accounted for a small fraction and could be easily utilized by HA-degrading microorganisms and, thus, were ideal C sources.…”

Section: Figure 2 Carbon Respiration (Cr) Dynamics Of Different Treasupporting

confidence: 91%

“…In terms of the C degradation rates in the various treatments it ranged from 18.91% to 52.05%, with the highest in T2+T3 and the lowest in T2. These values were close to the HA degradation rates by HA-degrading bacteria observed in arable soil, ranging from 17.30-56.00% (Filip, Kubát, 2003;Filip, Tesařová, 2004). certain changes.…”

Section: Figure 2 Carbon Respiration (Cr) Dynamics Of Different Treasupporting

confidence: 85%

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Degradation capacity of humic acids-degrading bacteria on humic acids extracted from arable soil

Fu¹,

Liu²,

Chang³

et al. 2017

Zemdirbyste-Agriculture

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The aim of the present experiment was to determine the degradation level of humic acids (HA) extraced from arable soil by three selected strains. A short-term experiment was carried out in 2014 at State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University. HA was extracted from arable soil and was used as the sole carbon (C) and nitrogen (N) source in solid culture medium. Three soil HA-degrading strainsBacillus licheniformis (strain 1), Microbacterium resistens (strain 2) and Stenotrophomonas maltophilia (strain 3), were chosen to further investigate their individual and combined effects on the C degradation rate and structural properties of humic acids in the medium. The experiment included seven treatments: T1, T2, T3, T1+T2, T1+T3, T2+T3 and T1+T2+T3. Results showed that the total colony-forming units (CFU) of S. maltophilia (strain 3) showed higher amount in the treatments it was associated with. Carbon respiration (CR) and microbial biomass carbon (MBC) in various treatments varied between 4.04 (T2) to 12.13 (T2+T3) mg dish -1 and 1.32 (T2) to 4.96 (T3) mg dish -1 , in terms of the C degradation rates in humic acids, the sum of CR and MBC, followed the trend T2+T3 (52.05%) > T1+T3 (49.29%) > T1 (44.25%) > T3 (40.61%) > T1+T2 (38.39%) > T1+T2+T3 (37.09%) > T2 (18.91%). Infrared spectroscopy revealed that medium of all treatments resulted in higher levels of carbohydrate, aliphatic compounds, alcohols and nitrogenous substances after degradation process. T1 exhibited the lowest aromatic C content compared with the content before degradation, while that in T1+T2+T3 was the highest. Thus, B. licheniformis (strain 1) might have a relatively strong degradation capacity for aromatic C.

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Section: Figure 2 Carbon Respiration (Cr) Dynamics Of Different Treasupporting

confidence: 91%

Section: Figure 2 Carbon Respiration (Cr) Dynamics Of Different Treasupporting

confidence: 85%

Degradation capacity of humic acids-degrading bacteria on humic acids extracted from arable soil

Fu¹,

Liu²,

Chang³

et al. 2017

Zemdirbyste-Agriculture

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show abstract

“…This trend suggests that the newly formed HA 14 C degraded while more FA 14 C was formed within the macroaggregates as incubation continued. In the study of Filip and Tesar rová (2004), HA extracted from two soils under permanent meadow and from a forest soil were added as either a supplemental source of nutrients, or as the sole sources of carbon or nitrogen, to cultures of microbial communities indigenous to the same soil. They found that the year-long incubation under semi-aerobic conditions caused degradation (including microbial utilization) of added HA at a rate of 9-63% depending on nutrient conditions in the individual cultures and the origin of HA.…”

Section: Soc Transformation In Relation To Incubation Timementioning

confidence: 99%

Isotopic characterization of sequestration and transformation of plant residue carbon in relation to soil aggregation dynamics

Guan

Dou

Chen

et al. 2015

Applied Soil Ecology

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“…Lignins, polyphenolic compounds abundant in vascular plants, are widespread in land and coastal environments, [2][3][4][5] and represent a major precursor to terrestrial HS. 1 There are many natural pathways, including photolysis, 6 thermal, 7 microbial, 8 and bacterial degradation, 9 which could release these phenolic building blocks from HS polymeric networks. These degraded fragments may enter directly into the circulatory systems of many organisms, or exist in vivo following the metabolism of intact polymers.…”

Section: Introductionmentioning

confidence: 99%

Capillary Electrophoretic Determination of Selected Phenolic Compounds in Humic Substances of Well Waters and Fertilizers

Chen

Chang

et al. 2010

ANAL. SCI.

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In this study, nine oxidized phenolics, which were often found in HS and provide useful information on the taxonomic source and diagenetic state of HS, gallic acid and protocatechuic acid, were employed standard solution to set up the CZE system 2010 © The Japan Society for Analytical Chemistry † To whom correspondence should be addressed. Humic substances (HS) from well waters, fertilizers, and synthetic phenolic polymers were characterized by elemental and UV-VIS spectroscopic analyses. Capillary zone electrophoresis (CZE) with UV absorption detection was used to analyze the lignin-derived phenolic distribution in the degradation residues after alkaline CuO oxidation of HS samples. Eleven phenols with p-acetyl, vanillyl and syringyl substituents were selected to optimize the CZE parameters. For well waters and fertilizers, the content of phenolic fragments was in agreement with the findings of the elemental and spectroscopic measurements.Additionally, parameters derived from the vanillic acid/vanilline, syringyl acid/syringaldehyde, p-hydroxyl/vanillyl and syringyl/vanillyl ratios matched analogous studies on dissolved organic matter from natural waters and on humic acids from terrestrial substances. The amount of phenolic monomer bonded within two synthetic HS polymers was found to be 25.9% protocatechuic acid and 71.3% gallic acid.

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Microbial degradation and transformation of humic acids from permanent meadow and forest soils

Cited by 33 publications

References 15 publications

Degradation capacity of humic acids-degrading bacteria on humic acids extracted from arable soil

Degradation capacity of humic acids-degrading bacteria on humic acids extracted from arable soil

Isotopic characterization of sequestration and transformation of plant residue carbon in relation to soil aggregation dynamics

Capillary Electrophoretic Determination of Selected Phenolic Compounds in Humic Substances of Well Waters and Fertilizers

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