Soil Glycosidase Activities and Water Soluble Organic Carbon Under Different Land Use Types

Z, X.; Chen, L. J; Chen, Z. H; Wu, Zhijie; Zhang, L.L; Zhang, Y.L

doi:10.4067/s0718-27912010000200001

Cited by 12 publications

(9 citation statements)

References 27 publications

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“…Moreover, nutrient deficiency is a common constraint for microorganisms living in tailings. An initial comparison (climatic factors were not considered) showed that the average SOC of the tailings samples was far less than the values reported for natural and arable soils 18 19 20 and close to those of highly contaminated soils 21 .…”

Section: Discussionmentioning

confidence: 82%

From lithotroph- to organotroph-dominant: directional shift of microbial community in sulphidic tailings during phytostabilization

Bond

Nostrand

et al. 2015

Sci Rep

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Engineering microbial diversity to enhance soil functions may improve the success of direct revegetation in sulphidic mine tailings. Therefore, it is essential to explore how remediation and initial plant establishment can alter microbial communities, and, which edaphic factors control these changes under field conditions. A long-term revegetation trial was established at a Pb-Zn-Cu tailings impoundment in northwest Queensland. The control and amended and/or revegetated treatments were sampled from the 3-year-old trial. In total, 24 samples were examined using pyrosequencing of 16S rRNA genes and various chemical properties. The results showed that the microbial diversity was positively controlled by soil soluble Si and negatively controlled by soluble S, total Fe and total As, implying that pyrite weathering posed a substantial stress on microbial development in the tailings. All treatments were dominated by typical extremophiles and lithotrophs, typically Truepera, Thiobacillus, Rubrobacter; significant increases in microbial diversity, biomass and frequency of organotrophic genera (typically Nocardioides and Altererythrobacter) were detected in the revegetated and amended treatment. We concluded that appropriate phytostabilization options have the potential to drive the microbial diversity and community structure in the tailings toward those of natural soils, however, inherent environmental stressors may limit such changes.

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Section: Discussionmentioning

confidence: 82%

From lithotroph- to organotroph-dominant: directional shift of microbial community in sulphidic tailings during phytostabilization

Bond

Nostrand

et al. 2015

Sci Rep

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“…The correlations of enzyme activity with soil properties tended to change with incubation time, in most cases without statistical significance (p > 0.05, data not shown), with the exception of MUBglucosidase activity whose correlation with OM became significant after 8 h of extraction (r = 0.5660; p < 0.08) and the significant (p < 0.05) correlation of acetate-glucosidase activity with OM, that is, in general, kept with time. Some other researchers have found correlations between enzyme activity (MUB) and soil pH and/or clay content (Avellaneda-Torres et al, 2013;Ma et al, 2010). In spite of the significant correlation between MUB and maleate buffers, no significant relationship (p < 0.05) was obtained for the former and any soil property.…”

Section: Results and Discussion 31 Evaluation Of Different Buffers Amentioning

confidence: 84%

Efficiency of three buffers for extracting β-glucosidase enzyme in different soil orders: Evaluating the role of soil organic matter

Gutiérrez¹,

Blu²,

Molina-Roco³

et al. 2017

Sci.agropec

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The objective of this research was to evaluate extraction methods for β-glucosidases comparing three buffer solutions (MUB, acetate, and maleate) at different incubation times (0.5 h to 10 h) and in three different soil orders (Mollisols, Andisols and Ultisols). Seven acidic soils were evaluated, showing differences in pH, OM, and clay contents. To evaluate the effect of OM as enzymes source, one soil of each order was treated to partially remove its OM and then the enzyme assay was performed. When using MUB and maleate buffers the highest (32 and 31 µg-pNP g-soil -1 h -1 in average, respectively) were found, and the latter was significantly (p < 0.050) correlated with the soil clay content. The activity obtained with acetate buffer was much lower (38.2 µg-pNP g-soil -1 h -1 in average). The use of MUB buffer with 1 h of incubation is suggested as extraction method, showing good reproducibility and allowing to express higher enzyme potential for soil comparisons. For the Andisol and Ultisol, the enzyme activity significantly decreased with the OM removal (%) indicating that OM is the major source of the measured β-glucosidase activity, while a different trend was observed for the Mollisol, in which the mineral fraction (mainly 2:1 type clay) appears to be involved in the increased enzyme activity displayed after the initial OM removal.

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“…The decrease in SOC following a land use change is difficult to predict due to variations in the factors that drive SOC mineralization, among them, forest type, climate, soil properties, biochemical environment, and soil management practices (Hombegowda, van Straaten, Köhler, & Hölscher, ; Wei et al, ). SOC content was similar in S forest , O +manure , and O ‐manure , probably because perennial vegetation contributes to continuous and higher C input in soil through root exudation compared to annual crops, such as maize (Ma et al, ). The addition of organic inputs may also have contributed to maintaining similar levels of SOC in cactus soils, although this should not be the main reason, because maize soils also received organic inputs.…”

Section: Discussionmentioning

confidence: 97%

Cultivation ofOpuntia ficus‐indicaunder different soil management practices: A possible sustainable agricultural system to promote soil carbon sequestration and increase soil microbial biomass and activity

et al. 2017

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Monitoring of soil organic carbon (SOC) content, SOC pools, and enzymes involved in SOC degradation and mineralization is needed to elucidate the impact of conversion from forest to agriculture on SOC and properties, and how and which crop system and management practices can contribute to C sequestration, thus climate change mitigation. This study compared the impact of forest conversion to maize (Zea mays L.) and cactus (Opuntia ficus-indica [L.] Mill.) fields with different farming management on SOC content and pools (recalcitrant, labile, and extractable), soil microbial biomass carbon, and enzyme activities involved in the soil C cycle. For this purpose, a site under strong land use changes in Central Mexico with high demographic density was selected. Forest conversion to maize fields decreased the original SOC and the C recalcitrance index (RI). However, land use change from forest to cactus systems maintained SOC content, C RI, and arylesterase activity near the values observed in the original forest. Cactus systems promoted higher soil extractable organic carbon content, related to increases in microbial biomass and β-glucosidase activity. Additionally, cactus cultivation can maintain SOC and a C RI at a similar level to the forest soil, which contributes to sustainability of the agroecosystem and climate change mitigation. Therefore, it could comprise a promising viable option for sustainable crop production systems under temperate subhumid conditions, in turn promoting socioeconomic development and rural growth. KEYWORDScarbon recalcitrance index, Opuntia ficus-indica, soil extractable organic carbon, soil organic carbon, sustainability

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Soil Glycosidase Activities and Water Soluble Organic Carbon Under Different Land Use Types

Cited by 12 publications

References 27 publications

From lithotroph- to organotroph-dominant: directional shift of microbial community in sulphidic tailings during phytostabilization

From lithotroph- to organotroph-dominant: directional shift of microbial community in sulphidic tailings during phytostabilization

Efficiency of three buffers for extracting β-glucosidase enzyme in different soil orders: Evaluating the role of soil organic matter

Cultivation ofOpuntia ficus‐indicaunder different soil management practices: A possible sustainable agricultural system to promote soil carbon sequestration and increase soil microbial biomass and activity

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