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

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 st...

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Bibliographic Details
Published inCurrent microbiology Vol. 56; no. 1; pp. 55 - 60
Main Authors Sinha, Sangram, Mukherjee, Samir Kumar
Format Journal Article
LanguageEnglish
Published New York New York : Springer-Verlag 01.01.2008
Springer-Verlag
Springer Nature B.V
Subjects
Anti-Bacterial Agents - pharmacology
Bacteria
Biomedical and Life Sciences
Biotechnology
Cadmium
Cadmium - metabolism
Cadmium - pharmacology
Colonization
Cucurbita - growth & development
Cucurbita - microbiology
DNA, Ribosomal - genetics
Drug Resistance, Bacterial
Life Sciences
Microbiology
Mustard Plant - growth & development
Mustard Plant - microbiology
Plant growth
Plant pathology
Plant resistance
Plant Roots - microbiology
Pseudomonas aeruginosa - classification
Pseudomonas aeruginosa - drug effects
Pseudomonas aeruginosa - genetics
Pseudomonas aeruginosa - isolation & purification
Rhizosphere
RNA, Bacterial - genetics
RNA, Ribosomal, 16S - genetics
Siderophores - biosynthesis
Soil contamination
Toxicity
Up-Regulation
Mustard Plant
Dilution Plating
Siderophore Production
Rhizosphere Soil
Rhizosphere Soil Sample
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Summary: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.
Bibliography:http://dx.doi.org/10.1007/s00284-007-9038-z
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ISSN:0343-8651
1432-0991
DOI:10.1007/s00284-007-9038-z