Decrease in the genotoxicity of metal-contaminated soils with biochar amendments

Autor: Sylvie Cotelle, Frédéric Rees, Jean Louis Morel, Adrien Dhyèvre
Přispěvatelé: Laboratoire Sols et Environnement (LSE), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL), Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Terre et Environnement de Lorraine (OTELo), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), French Lorraine Region, European Regional Development Fund, Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2017
Předmět:
BIOAVAILABILITY
sol contamine
Health
Toxicology and Mutagenesis
[SDV]Life Sciences [q-bio]
Biomass
010501 environmental sciences
medicine.disease_cause
01 natural sciences
Plant Roots
Soil
ZINC
décontamination du sol
Biochar
Bioassay
Soil Pollutants
2. Zero hunger
Chemistry
croissance des plantes
food and beverages
04 agricultural and veterinary sciences
General Medicine
Pollution
Wood
6. Clean water
Vicia faba
CD
Environmental chemistry
Charcoal
Pyrolysis
MICRONUCLEUS
pollution métallique
complex mixtures
Metals
Heavy
TOXIC ELEMENTS
medicine
Environmental Chemistry
Ecotoxicology
biochar
0105 earth and related environmental sciences
PYROLYSIS
BIOASSAYS
AVAILABILITY
genotoxicity
15. Life on land
STANDARDIZATION
Agronomy
MOBILITY
Soil water
génotoxicité
040103 agronomy & agriculture
0401 agriculture
forestry
and fisheries
Plant nutrition
Genotoxicity
Zdroj: Environmental Science and Pollution Research
Environmental Science and Pollution Research, Springer Verlag, 2017, 24 (36), pp.27634-27641. ⟨10.1007/s11356-017-8386-x⟩
ISSN: 0944-1344
1614-7499
DOI: 10.1007/s11356-017-8386-x⟩
Popis: International audience; Biochar amendments, i.e., the solid product of biomass pyrolysis, reduce soil metal availability, which may lower the toxicity of metal-contaminated soils.A direct link between the decrease in soil metal availability and improved plant development is however often difficult to establish, as biochar may induce undesirable side effects on plant growth, e.g., a modification to plant nutrition. In order to investigate toxicity processes at a cellular level, roots of Vicia faba were exposed for 7 days to three metal-contaminated substrates and one control soil, amended with a 0 or 5% (w/w) addition of a wood-derived biochar.Exposure to pure biochar was also tested. Root tip cells were then observed to count the number of micronuclei as an estimation of DNA damage and the number of cells at mitosis stage. Results showed that biochar amendments led to a significant decrease in soil metal availability (Cd, Cu, Ni, Pb, and Zn) and to enhance root development on acidic substrates. The micronucleus frequency in root tip cells was positively correlated and the number of mitotic cells negatively, to the extractability of Zn in soils and to the concentration of Zn in secondary roots.Exposure to pure biochar caused a lower production of roots than most soil substrates, but led to the lowest number of observed micronuclei. In conclusion, biochar amendments can reduce the genotoxicity associated with the presence of metallic contaminants in soils, thereby potentially improving plant growth.
Databáze: OpenAIRE
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