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Cadmium-induced Siderophore Production by a High Cd-resistant Bacterial Strain Relieved Cd Toxicity in Plants Through Root Colonization

Overview
Journal Curr Microbiol
Specialty Microbiology
Date 2007 Sep 28
PMID 17899260
Citations 28
Authors
Sangram Sinha
Samir Kumar Mukherjee
Affiliations
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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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