Comparative assessment of Indian mustard (Brassica juncea L.) genotypes for phytoremediation of Cd and Pb contaminated soils

Comparative assessment of Indian mustard (Brassica juncea L.) genotypes for phytoremediation of Cd and Pb contaminated soils

Heavy metal removal by phytoremediation bears a great potential to decontaminate soils and Brassica juncea L. (Indian mustard) seems to be a possible candidate species for this purpose. A field experiment was conducted to compare the efficiency of eighty Indian mustard cultivars for phytoextraction...

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Bibliographic Details
Published in:Environmental pollution (1987) Vol. 254; no. Pt B; p. 113085
Main Authors: Gurajala, Hanumanth Kumar, Cao, Xuerui, Tang, Lin, Ramesh, Thanusree Mallakuntla, Lu, Min, Yang, Xiaoe
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01-11-2019
Subjects:
Biodegradation, Environmental
Brassica juncea L
Cadmium
Cadmium - analysis
Cadmium - metabolism
Contaminated soils
Genotype
Lead
Lead - analysis
Lead - metabolism
Mustard Plant - genetics
Mustard Plant - metabolism
Phytoextraction
Soil Pollutants - analysis
Soil Pollutants - metabolism
Lead
Cadmium
Contaminated soils
Phytoextraction
Brassica juncea L
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Summary:Heavy metal removal by phytoremediation bears a great potential to decontaminate soils and Brassica juncea L. (Indian mustard) seems to be a possible candidate species for this purpose. A field experiment was conducted to compare the efficiency of eighty Indian mustard cultivars for phytoextraction of cadmium (Cd) and lead (Pb) from bimetal contaminated soil. Our results indicated that total Cd and Pb concentrations in the shoots and roots were in the range of 2.43 ± 0.00 to 0.31 ± 0.02 mg/kg and 2.94 ± 0.05 to 0.44 ± 0.03 mg/kg and 5.33 ± 0.76 to 0.47 ± 0.20 mg/kg and 3.78 ± 0.06 to 0.16 ± 0.08 mg/kg. Significant differences based on the translocation factors indicated that root-to-shoot transfer is higher for Pb (3.87 ± 0.12 to 0.48 ± 0.03) than Cd (3.38 ± 0.05 to 0.22 ± 0.01). Furthermore, significant correlations between dry weights, Cd and Pb concentrations and uptake in both shoots and roots were observed, but translocation factor showed a negative correlation with roots, but not in shoots. Among 80 genotypes of Indian mustard IM-25, IM-13 and IM-65 for Cd and IM-79, IM-24 and IM-32 for Pb seems to perform well for phytoextraction. The results of the field experiment suggest that certain Brassica juncea L. cultivars are suitable for removal of Cd and Pb in low to moderately contaminated soils. [Display omitted] •Preliminarily screening with eighty Indian mustard cultivars variably accumulated Cd and Pb from soils.•IM-25, IM-13 and IM-65 genotypes of Indian mustard had better tolerance to Cd and IM-79, IM-24 and IM-32 genotypes for Pb.•Translocation efficiency was observed more to Pb than for Cd.•Mustard plantation with tolerant genotypes can promote the removal efficiency of Cd and Pb to restore contaminated soils. Among 80 genotypes of Indian mustard IM-25, IM-13 and IM-65 for Cd and IM-79, IM-24 and IM-32 for Pb seems to perform well for phytoextraction.
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2019.113085