Encapsulation of protein in humic acid from a histosol as an explanation for the occurrence of organic nitrogen in soil and sediment

Zang, Xu; Heemst, Jasper D.H van; Dria, Karl J.; Hatcher, Patrick G.

doi:10.1016/s0146-6380(00)00040-1

Cited by 165 publications

(94 citation statements)

References 59 publications

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“…For example, the high abundance of Sphagnum mosses 346 and peat at the old site might have contributed to the large soluble protein pool, given that 347 mosses can retain dissolved proteins via cation-exchange and a reaction with keto-carboxylic 348 acid groups in their cell walls (Painter 1983;Painter 2003). However, these protein-binding 349 reactions might also hinder proteolysis, if the binding of substrates and enzymes is not 350 transitional (Sutton and Sposito 2005;Zang et al 2000). 351…”

Section: Among-site Differences 295mentioning

confidence: 99%

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Nitrogen dynamics in arctic tundra soils of varying age: differential responses to fertilization and warming

et al. 2013

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1In the northern foothills of the Brooks Range, Alaska, a series of glacial retreats has created a landscape that 2 varies widely in time since deglaciation (= soil age), from ~10k years to more than 2M years. Productivity of 3 the moist tundra that covers most of this landscape is generally N-limited, but varies widely, as do plant-species 4 composition and key soil properties such as pH. These differences might be altered in the future because of the 5 projected increase in N availability under a warmer climate. We hypothesized that future changes in 6 productivity and vegetation composition across soil ages might be mediated through changes in N availability. 7To test this hypothesis, we compared readily available-N (water-soluble ammonium, nitrate, and amino acids), 8 moderately-available N (soluble proteins), hydrolysable-N, and total-N pools across three tussock-tundra 9 landscapes with soil ages ranging from 11.5k to 300k years. We also compared the effects of long-term 10 fertilization and warming on these N pools for the two younger sites, in order to assess whether the impacts of 11 warming and increased N availability differ by soil age. 12Readily available N was largest at the oldest site, and amino acids (AA) accounted for 80-89 % of this 13 N. At the youngest site, however, inorganic N constituted the majority (80-97%) of total readily-available N.

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Section: Among-site Differences 295mentioning

confidence: 99%

“…Upon death of these organisms, these macro-363 polymers are either 1) stabilized for the long term in soil by encapsulation with humic or 364 mineral components (Lipson and Näsholm 2001;Zang et al 2000) or 2) depolymerized into 365 smaller fragments and available N by extracellular enzymes (Schimel and Bennett 2004). 366…”

Section: Among-site Differences 295mentioning

confidence: 99%

Nitrogen dynamics in arctic tundra soils of varying age: differential responses to fertilization and warming

et al. 2013

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“…Proteins are highly sensitive to degradation and until recently, the fate of peptides during diagenesis was considered to be either total remineralization or random recocmbination with other degraded biomolecules to yield heterocyclic moieties (patience et al, 1992;Schulten and Schnitzer, 1997). However, recent studies using solid-state 15N MR and thermochemolysis with tetramethylammonium hydroxide (TMAH) have shown that part of the nitrogen-containing materials in refractory organic matter form several sediments corresponds to peptide material that survived microbial degradation (Knicker and Hatcher, 1997;Zang et al, 2000;Knicker, 2000;Garcette-Lepecq et al, 2001;Knicker et al, 2001). Some authors have suggested that encapsulation of labile nitrogen-containing materials into refractory organic matter can partly explain the fate of proteinaceous materials in biogeochemical deposits (Knicker and Hatcher, 1997;Zang et al, 2000;Knicker et al, 2001;.…”

Section: Introductionmentioning

confidence: 99%

“…However, recent studies using solid-state 15N MR and thermochemolysis with tetramethylammonium hydroxide (TMAH) have shown that part of the nitrogen-containing materials in refractory organic matter form several sediments corresponds to peptide material that survived microbial degradation (Knicker and Hatcher, 1997;Zang et al, 2000;Knicker, 2000;Garcette-Lepecq et al, 2001;Knicker et al, 2001). Some authors have suggested that encapsulation of labile nitrogen-containing materials into refractory organic matter can partly explain the fate of proteinaceous materials in biogeochemical deposits (Knicker and Hatcher, 1997;Zang et al, 2000;Knicker et al, 2001;. Recently, Riboulleau et al (2002) also suggested that encapsulation into aliphatic sulfurized material was probably the major process for amino acid preservation in kerogens with a high sulfur content.…”

Section: Introductionmentioning

confidence: 99%

“…ıo et al, 1995. This method has also been shown to cleave peptide bonds efficiently (Knicker et al, 2001;Knicker and Hatcher, 1997;Zang et al, 2000). The technique has been successfully applied to the analysis of protein-derived materials in biopolymers and geomacromolecules (Knicker and Hatcher, 1997;Zang et al, 2000;Knicker et al, 2001;Mongenot et al, 2001;Riboulleau et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Preservation of peptide moieties in three Spanish sulfur-rich Tertiary kerogens

Rı́o

Olivella

Knicker

et al. 2004

Organic Geochemistry

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Thermochemolysis with tetramethylammonium hydroxide (TMAH) and solid-state 15 N NMR were utilized for the characterization of refractory organic nitrogen in Tertiary Spanish kerogens. The samples included sulfur-rich oil shales from the Ribesalbes (Serravallian), Libros (Tortonian) and Cerdanya (Tortonian) basins. Analysis using solid state 15 N NMR showed that part of the refractory nitrogen in the kerogens corresponds to amide groups. Moreover, the release of amino acid derivatives after pyrolysis in the presence of TMAH indicated that this amide-N arose from peptide moieties. The amino acids released from the kerogens were dominated by high amounts of glycine and alanine. Minor amounts of aspartic acid, serine, a-aminobutyric acid and other unidentified amino acids were also detected. Because proteinaceous structures, including small peptides, are generally considered as being highly sensitive to diagenetic degradation, encapsulation of labile peptide material into aliphatic structures in S-rich kerogens (probably via lipid sulfurization) has been proposed to explain the survival of these moieties. Substantial amounts of fatty acids (as methyl esters) were also released from all the kerogens after pyrolysis/TMAH, indicating their highly aliphatic character. The production of both fatty acids and amino acids from the kerogens supports the encapsulation process. !

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Biogeochemistry of Wetland Carbon Preservation and Flux

Neubauer

Megonigal

2021

Geophysical Monograph Series

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Encapsulation of protein in humic acid from a histosol as an explanation for the occurrence of organic nitrogen in soil and sediment

Cited by 165 publications

References 59 publications

Nitrogen dynamics in arctic tundra soils of varying age: differential responses to fertilization and warming

Nitrogen dynamics in arctic tundra soils of varying age: differential responses to fertilization and warming

Preservation of peptide moieties in three Spanish sulfur-rich Tertiary kerogens

Biogeochemistry of Wetland Carbon Preservation and Flux

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