Microbial biosyntheses of individual neutral sugars among sets of substrates and soils

Derrien, Delphine; Marol, C.; Balesdent, Jérôme

doi:10.1016/j.geoderma.2007.01.017

Cited by 40 publications

(35 citation statements)

References 25 publications

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“…1). This trend is in agreement with previous studies (Murayama, 1988;Derrien et al, 2007) and illustrates the almost complete consumption of the substrate in a few days. Approximately 30 to 50 % of the consumed material was converted into microbial products, and the remaining part was used for heterotrophic respiration.…”

Section: Comparison Of the Four Substrates Mineralizationsupporting

confidence: 93%

“…Paul et al: Hydrogen dynamics in soil organic matter derived more from microbially derived products than from plant-derived molecules as a result of the mineral protection processes (Derrien et al, 2007;Bol et al, 2009). Carbon dynamics in this continuum have been widely studied using the natural 14 C / 12 C and 13 C / 12 C (Rafter and Stout, 1970;Balesdent et al, 1987) ratios and also through labeling experiments (Jenkinson, 1965;Murayama, 1988;Derrien et al, 2004).…”

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confidence: 99%

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Hydrogen dynamics in soil organic matter as determined by 13C and 2H labeling experiments

et al. 2016

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Abstract. Understanding hydrogen dynamics in soil organic matter is important to predict the fate of 3 H in terrestrial environments. One way to determine hydrogen fate and to point out processes is to examine the isotopic signature of the element in soil. However, the non-exchangeable hydrogen isotopic signal in soil is complex and depends on the fate of organic compounds and microbial biosyntheses that incorporate water-derived hydrogen. To decipher this complex system and to understand the close link between hydrogen and carbon cycles, we followed labeled hydrogen and labeled carbon throughout near-natural soil incubations. We performed incubation experiments with three labeling conditions: 1 -13 C 2 H double-labeled molecules in the presence of 1 H 2 O; 2 -13 C-labeled molecules in the presence of 2 H 2 O; 3 -no molecule addition in the presence of 2 H 2 O. The preservation of substrate-derived hydrogen after 1 year of incubation (ca. 5 % in most cases) was lower than the preservation of substrate-derived carbon (30 % in average). We highlighted that 70 % of the C-H bonds are broken during the degradation of the molecule, which permits the exchange with water hydrogen. Added molecules are used more for trophic resources. The isotopic composition of the non-exchangeable hydrogen was mainly driven by the incorporation of water hydrogen during microbial biosynthesis. It is linearly correlated with the amount of carbon that is degraded in the soil. The quantitative incorporation of water hydrogen in bulk material and lipids demonstrates that nonexchangeable hydrogen exists in both organic and mineralbound forms. The proportion of the latter depends on soil type and minerals. This experiment quantified the processes affecting the isotopic composition of non-exchangeable hydrogen, and the results can be used to predict the fate of tritium in the ecosystem or the water deuterium signature in organic matter.

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Section: Comparison Of the Four Substrates Mineralizationsupporting

confidence: 93%

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confidence: 99%

Hydrogen dynamics in soil organic matter as determined by 13C and 2H labeling experiments

et al. 2016

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“…The 13 C natural abundance in plants and soils was used to evaluate the turnover of SOM in ecosystems that were initially under C 3 (or C 4 ) vegetation and changed to a C 4 (or C 3 ) vegetation. This method was used at the bulk level (Balesdent and Mariotti 1996) and at the molecular level for n-alkanes (Wiesenberg et al 2004a;Quenea et al 2006), n-carboxylic acids (Wiesenberg et al 2004a), lignin-derived phenols (Bahri et al 2006) and sugars (Derrien et al 2006). Despite their importance as potential biomarkers for aboveground and belowground biomass of non-woody plants, the 13 C natural abundance of cutin and suberin monomers has never been studied (Amelung et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Can cutin and suberin biomarkers be used to trace shoot and root-derived organic matter? A molecular and isotopic approach

et al. 2010

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Cutins of plant shoots and suberins, mostly present in roots could contribute to significant portions of stable soil organic matter. Their biomarker potential, residing in their unique compositions in different plant types, has been used previously to infer sources of organic matter in sediments. These aliphatic plant biopolyesters contain specific biomarkers, which may be used for tracing their fate in soils and sediments, when combined with stable 13 C isotope labelling. In order to evaluate the potential use of cutin and suberin biomarkers as indicators of shoot and root contributions from C 3 and C 4 plant origins, the objectives of this study were to 1) identify their constitutive monomers, which are specific for shoots and roots of maize (C 4 ) and wheat (C 3 ); 2) evaluate the 13 C differences between maize and wheat biomarkers. Mid-chain hydroxy carboxylic acids were mainly found in the aboveground biomass, while a,x-alkanedioic acids were only present in the roots. The differences in the isotopic composition of the specific monomers between wheat and maize plants (17-18% for shoot markers, 19% for root markers) were larger than those observed for bulk plant tissues and close to those observed for ligninderived phenols in other studies. These differences should make it possible to differentiate and quantify the different types and sources of organic matter in sediments and soils. In particular, the molecular and isotopic signatures of cutins and suberins can be used to evaluate the specific dynamics of root vs shoot tissues in soils using C 3 /C 4 chronosequences.

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“…The concentrations of DOC in soil solution were determined using a total organic carbon analyzer (TOC-V CSH , Shimadzu, Japan). The concentrations of monosaccharides in soil solution were determined using periodate oxidation (Burney and Sieburth 1977;Johnson and Sieburth 1977) and glucose standards, since it is reported that composition of monosaccharides is similar across a variety of climates and soils (Derrien et al 2007) and glucose represents the dominant proportion of monosaccharides in tropical soils (Trouve et al 1996;Derrien et al 2007). …”

Section: Soil Solution Extraction and Chemical Analysesmentioning

confidence: 99%

“…We chose glucose as a model substrate of monosaccharides since it probably represented the dominant C compound entering soil (Paul and Clark 1996;Derrien et al 2007;Hill et al 2008) and the mineralization kinetics of the monosaccharides other than glucose are reported to be similar to those of glucose . Glucose mineralization kinetics in soils were determined for tropical and temperate forest soils according to van Hees et al (2002).…”

Section: Glucose Mineralization Kineticsmentioning

confidence: 99%

Biodegradation kinetics of monosaccharides and their contribution to basal respiration in tropical forest soils

Hayakawa

Fujii

Funakawa

et al. 2011

Soil Science and Plant Nutrition

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Low molecular weight (LMW) organic compounds in soil solution are easily biodegradable and could fuel respiration by soil microorganisms. Our main aim was to study the mineralization kinetics of monosaccharides using 14 C-radiolabelled glucose. Based on these data and the soil solution concentrations of monosaccharides, we evaluated the contribution of monosaccharides to basal respiration for a variety of tropical forest soils. Further, the factors controlling the mineralization kinetics of monosaccharides were examined by comparing tropical and temperate forest soils. Monosaccharides comprised on average 5.2 to 47.7% of dissolved organic carbon in soil solution. Their kinetic parameters (V max and K M ), which were described by a single MichaelisMenten equation, varied widely from 11 to 152 nmol g À1 h À1 and 198 to 1294 mmol L À1 for tropical soils, and from 182 to 400 nmol g À1 h À1 and 1277 to 3150 mmol L À1 for temperate soils, respectively. The values of V max increased with increasing microbial biomass-C in tropical and temperate soils, while the K M values had no correlations with soil biological or physicochemical properties. The positive correlation between V max values and microbial biomass-C indicates that microbial biomass-C is an essential factor to regulate the V max values in tropical and temperate forest soils. The biodegradation kinetics of monosaccharides indicate that the microbial capacity of monosaccharide mineralization far exceeds its rate at soil solution concentration. Monosaccharides in soil solution are rapidly mineralized, and their mean residence times in this study were very short (0.4-1.9 h) in tropical forests. The rates of monosaccharide mineralization at actual soil solution concentrations made up 22-118% of basal respiration. Probably because of the rapid and continuous production and consumption of monosaccharides, monosaccharide mineralization is shown to be a dominant fraction of basal respiration in tropical forest soils, as well as in temperate and boreal forest soils.

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Microbial biosyntheses of individual neutral sugars among sets of substrates and soils

Cited by 40 publications

References 25 publications

Hydrogen dynamics in soil organic matter as determined by <sup>13</sup>C and <sup>2</sup>H labeling experiments

Hydrogen dynamics in soil organic matter as determined by <sup>13</sup>C and <sup>2</sup>H labeling experiments

Can cutin and suberin biomarkers be used to trace shoot and root-derived organic matter? A molecular and isotopic approach

Biodegradation kinetics of monosaccharides and their contribution to basal respiration in tropical forest soils

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Microbial biosyntheses of individual neutral sugars among sets of substrates and soils

Cited by 40 publications

References 25 publications

Hydrogen dynamics in soil organic matter as determined by &lt;sup&gt;13&lt;/sup&gt;C and &lt;sup&gt;2&lt;/sup&gt;H labeling experiments

Hydrogen dynamics in soil organic matter as determined by &lt;sup&gt;13&lt;/sup&gt;C and &lt;sup&gt;2&lt;/sup&gt;H labeling experiments

Can cutin and suberin biomarkers be used to trace shoot and root-derived organic matter? A molecular and isotopic approach

Biodegradation kinetics of monosaccharides and their contribution to basal respiration in tropical forest soils

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Hydrogen dynamics in soil organic matter as determined by <sup>13</sup>C and <sup>2</sup>H labeling experiments

Hydrogen dynamics in soil organic matter as determined by <sup>13</sup>C and <sup>2</sup>H labeling experiments