Bistable Photoconduction in Semiconductors

Lagomarsino, S.

doi:10.5772/14751

Cited by 1 publication

(1 citation statement)

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“…Copper (Cu) is naturally present in all soils with a median concentration of 31.1 mg kg −1 (Heijerick et al, 2006;Tóth et al, 2016), but its concentrations in soils under conventional agriculture, vineyards, orchards, or surrounding mining areas, smelters and wood preservation sites can build up to very high concentrations due to anthropic activities, either producing or using Cubased compounds and materials (Komárek et al, 2010;Mench and Bes, 2009;Ettler, 2016), and Cu sorption by clay minerals and the soil organic matter (SOM) (Quenea et al, 2009;Lagomarsino et al, 2011). Copper is a micronutrient with important physiological activities in all living microorganisms, but Cu excess in soil impacts the soil microbial communities (Sandaa et al, 1999;Lejon et al, 2008) and soil respiration, soil microbial biomass and enzyme activities (Kumpiene et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Functional activity and functional gene diversity of a Cu-contaminated soil remediated by aided phytostabilization using compost, dolomitic limestone and a mixed tree stand

Xue

Zhou

Nostrand

et al. 2018

Environmental Pollution

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Trace elements (TEs) availability, biochemical activity and functional gene diversity was studied in a Cu-contaminated soil, revegetated for six years with a mixed stand of willow, black poplar, and false indigo-bush, and amended or not with compost plus dolomitic limestone (OMDL). The OMDL amendment significantly reduced Cu and As availability and soil toxicity, and increased the biochemical activity and microbial functional diversity assessed with the GEOCHIP technique, as compared to the unamended soil (Unt). The OMDL soil showed significantly higher abundance of 25 functional genes involved in decomposition organic compounds, and 11, 3 and 11 functional genes involved in the N, P and S biogeochemical cycles. Functional gene abundance was positively correlated with nutrient contents but negatively correlated with Cu availability and soil toxicity. The abundance of microbial functional genes encoding for resistance to various TEs also increased, possibly due to the microbial proliferation and lower Cu exposure in the presence of high total soil Cu concentration. Genes encoding for antibiotic resistance due to the co-occurrence of TEs and antibiotic resistant genes on genetic mobile elements. Overall, phytomanagement confirmed its potential to restore the biological fertility and diversity of a severely Cu-contaminated soil, but the increase of TEs and antibiotic resistant gene abundances deserve attention in future studies.

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Section: Introductionmentioning

confidence: 99%