National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Current study assessed the effectiveness of native plant growth promoting rhizobacteria of bauxite soil Bacillus thuringenesis, Stenotrophomonas hibiscola and Burkholderia cepacia inoculation on phytoremediation potential of Crotalaria juncea. A greenhouse pot culture experiment was designed with single and consortium inoculation of native bacteria to C. juncea grown on bauxite soil. Aluminium (Al), Cadmium (Cd) and Zinc (Zn) uptake from bauxite soil was estimated. Phytoremediation potential of C. juncea was analysed by estimating bio-accumulation factor and metal translocation factor. Findings revealed enhanced metal uptake in both root and shoot of C. juncea with native rhizobacterial inoculation. Highest metal uptake was recorded with bacterial consortium, showing increase metal content in shoot and root by 45.5% and 33.2% for Al, by 109.5% and 58.7% for Cr and by 172.2% and 85% for Pb respectively. Metal uptake by C. juncea proportionately decreased the amount of residual soil metal content in bauxite mine soil. BAF) and translocation factor (TF) in C. juncea was also enhanced with native bacteria inoculation and maximum increase was observed with consortium inoculation. Bio-accumulation showed increase of 40.8%, 92.2% and 130.2% and metal translocation factor exhibited enhancement by 9.2%, 32% and 47% for Al, Cr and Pb respectively. It was concluded the biochemical attributes of native bacteria aid to enhance the metal uptake and phytoremediation potential of C. juncea. Future study at field level can validate the effectiveness native rhizobacteria on phytoremediation by C. juncea.
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