Adsorption and native microbiota of an agricultural soil are involved in the removal of fluoranthene
| Autor: | Hernández-Hernández, O. J., Evaristo-Vázquez, L. R., Vásquez-Murrieta, M. S., Flores-Ortiz, C. M., Ponce-Mendoza, A., Flores-Herrera, H., Cancino-Díaz, J. C., Cruz-Maya, J. A., Jan-Roblero, J. |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Journal of soil science and plant nutrition v.16 n.4 2016 SciELO Chile CONICYT Chile instacron:CONICYT Journal of soil science and plant nutrition, Volume: 16, Issue: 4, Pages: 876-889, Published: OCT 2016 |
| Popis: | Several factors can influence the removal of polycyclic aromatic hydrocarbons from agricultural soils, such as the native microbiota, the physicochemical properties of the soil, soil management and addition of exogenous microorganisms. Nevertheless, the involvement of these factors has not been studied during fluoranthene removal at the microcosm level. In the present study, the effects of these factors were evaluated in microcosms composed of an organic agricultural soil (OAS-microcosm) and conventional agricultural soil (CAS-microcosm) contaminated with fluoranthene. According to their physicochemical properties, both soils were classified as silt loam. They had similar cation exchange capacities, water holding capacities and P-PO4(3-), but different pHs, electrical conductivities, and percentages of N, C, silt, clay and sand. Fluoranthene did not alter the native microbiota of the OAS- and CAS-microcosm because similar banding profiles were obtained in PCR-DGGE analysis of the 16S rRNA gene, and the total heterotrophic bacteriacount as well as fluoranthene-degrading bacteria count were similar between microcosms with fluoranthene and their controls without fluoranthene. However, OAS- and CAS-microcosms showed higher respiratory activity than their controls (p |
| Databáze: | OpenAIRE |
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