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Isolation and Identification of Phosphate Solubilizing Bacteria from Chinese Cabbage and Their Effect on Growth and Phosphorus Utilization of Plants  

Poonguzhali, Selvaraj (Department of Agricultural Chemistry, Chungbuk National University)
Madhaiyan, Munusamy (Department of Agricultural Chemistry, Chungbuk National University)
Sa, Tong-Min (Department of Agricultural Chemistry, Chungbuk National University)
Publication Information
Journal of Microbiology and Biotechnology / v.18, no.4, 2008 , pp. 773-777 More about this Journal
Abstract
Phosphate solubilizing bacteria (PSB) were isolated from the rhizosphere of Chinese cabbage and screened on the basis of their solubilization of inorganic tricalcium phosphate in liquid cultures. Ten strains that had higher solubilization potential were selected, and they also produced indole-3-acetic acid, 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and siderophores. The strains were identified to be members of Pseudomonas, by 16S rDNA sequence analysis. Seed bacterization with PSB strains increased the root elongation and biomass of Chinese cabbage in seedling culture, although they had no effect on phosphorus uptake of plants. The plant growth promotion by PSB in this study could be due to the production of phytohormones or mechanisms other than phosphate solubilization, since they had no effect on P nutrition.
Keywords
Phosphate solubilizing bacteria; Pseudomonas; 1-aminocyclopropane-1-carboxylate; indole-3-acetic acid; acid phosphatase;
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Times Cited By KSCI : 5  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
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