TY - JOUR
T1 - Mechanisms of biochar-mediated alleviation of toxicity of trace elements in plants
T2 - a critical review
AU - Rizwan, Muhammad
AU - Ali, Shafaqat
AU - Qayyum, Muhammad Farooq
AU - Ibrahim, Muhammad
AU - Zia-ur-Rehman, Muhammad
AU - Abbas, Tahir
AU - Ok, Yong Sik
PY - 2016/2/1
Y1 - 2016/2/1
N2 - Trace elements (TEs) contamination is one of the main abiotic stresses which limit plant growth and deteriorate the food quality by their entry into food chain. In recent, biochar (BC) soil amendment has been widely reported for the reduction of TE(s) uptake and toxicity in plants. This review summarizes the role of BC in enhancing TE(s) tolerance in plants. Under TE(s) stress, BC application increased plant growth, biomass, photosynthetic pigments, grain yield, and quality. The key mechanisms evoked are immobilization of TE(s) in the soil, increase in soil pH, alteration of TE(s) redox state in the soil, and improvement in soil physical and biological properties under TE(s) stress. However, these mechanisms vary with plant species, genotypes, growth conditions, duration of stress imposed, BC type, and preparation methods. This review highlights the potential for improving plant resistance to TE(s) stress by BC application and provides a theoretical basis for application of BC in TE(s) contaminated soils worldwide.
AB - Trace elements (TEs) contamination is one of the main abiotic stresses which limit plant growth and deteriorate the food quality by their entry into food chain. In recent, biochar (BC) soil amendment has been widely reported for the reduction of TE(s) uptake and toxicity in plants. This review summarizes the role of BC in enhancing TE(s) tolerance in plants. Under TE(s) stress, BC application increased plant growth, biomass, photosynthetic pigments, grain yield, and quality. The key mechanisms evoked are immobilization of TE(s) in the soil, increase in soil pH, alteration of TE(s) redox state in the soil, and improvement in soil physical and biological properties under TE(s) stress. However, these mechanisms vary with plant species, genotypes, growth conditions, duration of stress imposed, BC type, and preparation methods. This review highlights the potential for improving plant resistance to TE(s) stress by BC application and provides a theoretical basis for application of BC in TE(s) contaminated soils worldwide.
KW - Abiotic stress
KW - Biochar
KW - Immobilization
KW - pH
KW - Plants
KW - Tolerance
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U2 - 10.1007/s11356-015-5697-7
DO - 10.1007/s11356-015-5697-7
M3 - Article
C2 - 26531712
AN - SCOPUS:84955662056
VL - 23
SP - 2230
EP - 2248
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
SN - 0944-1344
IS - 3
ER -