Gibberellin production and phosphate solubilization by newly isolated strain of Acinetobacter calcoaceticus and its effect on plant growth

Plant growth-promoting rhizobacteria with gibberellins (GA)-producing potential were isolated from soil and screened for plant growth promotion. A new strain, Acinetobacter calcoaceticus SE370, produced extracellular GA and also had phosphate solubilising potential. It produced 10 different gibberel...

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Bibliographic Details
Published in:Biotechnology letters 2009-02, Vol.31 (2), p.277-281
Main Authors: Kang, Sang-Mo, Joo, Gil-Jae, Hamayun, Muhammad, Na, Chae-In, Shin, Dong-Hyun, Kim, Hak Youn, Hong, Jin-Kyu, Lee, In-Jung
Format: Article
Language:English
Subjects:
Acinetobacter calcoaceticus
Acinetobacter calcoaceticus - classification
Acinetobacter calcoaceticus - physiology
Agricultural biotechnology
Applied Microbiology
Bacteria
Biochemistry
Biological and medical sciences
Biomedical and Life Sciences
Biotechnology
Brassica
Calcium phosphate
Calcium phosphates
Cucumis sativus
Cucumis sativus - growth & development
Cucumis sativus - microbiology
Culture
Fundamental and applied biological sciences. Psychology
Gibberellins
Gibberellins - biosynthesis
Life Sciences
Microbiology
Original Research Paper
Phosphates
Phosphates - metabolism
Plant growth
Plants (organisms)
Soil Microbiology
Solubility
Species Specificity
Strain
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Summary:Plant growth-promoting rhizobacteria with gibberellins (GA)-producing potential were isolated from soil and screened for plant growth promotion. A new strain, Acinetobacter calcoaceticus SE370, produced extracellular GA and also had phosphate solubilising potential. It produced 10 different gibberellins, including the bioactive GA₁, GA₃ and GA₄ which were at, respectively, 0.45, 6.2 and 2.8 ng/100 ml. The isolate solubilised tricalcium phosphate and lowered pH of the medium during the process. Culture filtrates of the organism after growth on broth promoted growth of cucumber, Chinese cabbage and crown daisy.
ISSN:0141-5492
1573-6776
DOI:10.1007/s10529-008-9867-2