Positive relationships between phenol oxidase activity and extractable phenolics in estuarine soils

Kang, Hojeong; Lee, Jun Young; Lee, Sang Mi; Jung, Soohyun

doi:10.1080/02757540902758743

Cited by 11 publications

(5 citation statements)

References 16 publications

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“…This proposed process is substantiated by the elevated concentrations of phenolics in the pore water from the 25 cm deep piezometers in the lowered WT site. Quantification of phenolic oxidase enzymatic activities across our WT sites could help to further elucidate this process [ Kang et al , ]. We propose that WT drawdown stimulates phenol oxidase resulting in increased phenolic compounds [ Toberman et al , ], whereas phenolic accumulation in inundated peatlands is related to residence time and increased leaching of plant material.…”

Section: Discussionmentioning

confidence: 99%

The effect of long-term water table manipulations on dissolved organic carbon dynamics in a poor fen peatland

Hribljan

Kane

Pypker

et al. 2014

J. Geophys. Res. Biogeosci.

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Dissolved organic carbon (DOC) production, consumption, and quality displayed differences after long-term (~55 years) hydrological alterations in a poor fen peatland in northern Michigan. The construction of an earthen levee resulted in areas of a raised and lowered water table (WT) relative to an unaltered intermediate WT site. The lowered WT site had greater peat aeration and larger seasonal vertical WT fluctuations that likely elevated peat decomposition and subsidence with subsequent increases in bulk density, vertical hydraulic gradient, decreased hydraulic conductivity (K sat ), and a greater pore water residence time relative to the unaltered site. The raised WT site displayed a decreased K sat combined with seasonal upwelling events that contributed to a longer residence time in comparison to the unaltered site. These differences are potentially contributing to elevated DOC concentrations at the lowered and raised WT site relative to the unaltered site. Additionally, spectrophotometric indices and chemical constituent assays indicated that the lowered site DOC was more aromatic and contained elevated concentrations of phenolics compared to the intermediate site. The raised site DOC was less aromatic, less humified, and also had a greater phenolic content than the intermediate site. Furthermore, an incubation experiment showed that DOC in the raised site contained the greatest labile carbon source. Based on our results, long-term WT alterations will likely impose significant effects on DOC dynamics in these peatlands; however, WT position alone was not a good predictor of DOC concentrations, though impoundment appears to produce a more labile DOC whereas drainage increases DOC aromaticity.

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Section: Discussionmentioning

confidence: 99%

The effect of long-term water table manipulations on dissolved organic carbon dynamics in a poor fen peatland

Hribljan

Kane

Pypker

et al. 2014

J. Geophys. Res. Biogeosci.

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“…As the amount of phenolic compounds in soils can vary, the Folin-Ciocalteu assay is commonly used to determine the total amount of phenolic acids [ 24 – 26 ]. This assay is relatively simple compared to the CuO oxidation and the HPLC method.…”

Section: Extraction and Quantification Of Phenolicsmentioning

confidence: 99%

The Regulation by Phenolic Compounds of Soil Organic Matter Dynamics under a Changing Environment

Min

Freeman

Kang

et al. 2015

BioMed Research International

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104

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Phenolics are the most abundant plant metabolites and are believed to decompose slowly in soils compared to other soil organic matter (SOM). Thus, they have often been considered as a slow carbon (C) pool in soil dynamics models. Here, however, we review changes in our concept about the turnover rate of phenolics and quantification of different types of phenolics in soils. Also, we synthesize current research on the degradation of phenolics and their regulatory effects on decomposition. Environmental changes, such as elevated CO2, warming, nitrogen (N) deposition, and drought, could influence the production and form of phenolics, leading to a change in SOM dynamics, and thus we also review the fate of phenolics under environmental disturbances. Finally, we propose the use of phenolics as a tool to control rates of SOM decomposition to stabilize organic carbon in ecosystems. Further studies to clarify the role of phenolics in SOM dynamics should include improving quantification methods, elucidating the relationship between phenolics and soil microorganisms, and determining the interactive effects of combinations of environmental changes on the phenolics production and degradation and subsequent impact on SOM processing.

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“…Se ha observado (Benítez et al, 2004) incrementos en la actividad deshidrogenasa y en la ο-difenol oxidasa en respuesta al la adición de residuos compostados de la industria de la oliva ricos en polifenoles. También se ha identificado que la disponibilidad de oxigeno (Kang et al, 2009) incrementa la actividad dado que participa en la reacción, así como el pH (6-7) y el contenido de fenoles disueltos (Toberman et al, 2010) son cruciales en la regulación de la actividad ο-difenol oxidasa. Sin embargo, la diminución de la actividad en tercer sector del humedal y en el rio Juan Amarillos se puede relacionar con la disminución de la diversidad vegetal y la introducción de residuos urbanos al sistema.…”

Section: Indicadores De Salud Y Calidad De Suelosunclassified

Indicadores de salud y calidad de suelos en cuencas hídricas en Bogotá

Rincón¹

2012

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Positive relationships between phenol oxidase activity and extractable phenolics in estuarine soils

Cited by 11 publications

References 16 publications

The effect of long-term water table manipulations on dissolved organic carbon dynamics in a poor fen peatland

The effect of long-term water table manipulations on dissolved organic carbon dynamics in a poor fen peatland

The Regulation by Phenolic Compounds of Soil Organic Matter Dynamics under a Changing Environment

Indicadores de salud y calidad de suelos en cuencas hídricas en Bogotá

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