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Cadmium–Induced Siderophore Production by a High Cd-Resistant Bacterial Strain Relieved Cd Toxicity in Plants Through Root Colonization

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Abstract

This study focuses on the isolation and characterization of a high cadmium (Cd)-resistant bacterial strain, and possible exploitation of its Cd-accumulation and Cd-induced siderophore production property to improve plant growth in cadmium-contaminated soil through root colonization. The bacterial strain could tolerate up to 8 mM of Cd and could accumulate Cd intracellularly. The strain showed Cd-induced siderophore production maximally at 1.75 mM of Cd concentration under culture condition. It stimulated the growth of mustard and pumpkin plants in Cd-added soil through its establishment in rhizosphere. Through biochemical characterization and 16S rDNA sequence analysis, the strain KUCd1, as the name given to it, was identified as a strain of Pseudomonas aeruginosa.

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Acknowledgments

The work was supported by the grants received from the University of Kalyani.

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  1. Department of Microbiology, University of Kalyani, Kalyani 741 235, West Bengal, India

    Sangram Sinha & Samir Kumar Mukherjee

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  1. Sangram Sinha
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  2. Samir Kumar Mukherjee
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Correspondence to Samir Kumar Mukherjee.

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Sinha, S., Mukherjee, S.K. Cadmium–Induced Siderophore Production by a High Cd-Resistant Bacterial Strain Relieved Cd Toxicity in Plants Through Root Colonization. Curr Microbiol 56, 55–60 (2008). https://doi.org/10.1007/s00284-007-9038-z

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  • DOI: https://doi.org/10.1007/s00284-007-9038-z

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