Burkholderia sp. KCTC 11096BP as a Newly Isolated Gibberellin Producing Bacterium

Gil-Jae Joo; Sang-Mo Kang; Muhammad Hamayun; Sang-Kuk Kim; Chae-In Na; Dong-Hyun Shin; In-Jung Lee

doi:10.1007/s12275-008-0273-1

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Burkholderia sp. KCTC 11096BP as a Newly Isolated Gibberellin Producing Bacterium: Gil-Jae Joo ¹, Sang-Mo Kang ², Muhammad Hamayun ², Sang-Kuk Kim ³, Chae-In Na ², Dong-Hyun Shin ², In-Jung Lee ²; Journal of Microbiology 2009;47(2):167-171
DOI: https://doi.org/10.1007/s12275-008-0273-1
Published online: May 2, 2009

¹Institute of Agricultural Science and Technology, Kyungpook National University, Dae-gu 702-701, Republic of Korea, ²School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Dae-gu 702-701, Republic of Korea, ³Division of Crop Science, Gyongbuk Provincial Agricultural Technology Administration, Dae-gu 702-708, Republic of Korea¹Institute of Agricultural Science and Technology, Kyungpook National University, Dae-gu 702-701, Republic of Korea, ²School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Dae-gu 702-701, Republic of Korea, ³Division of Crop Science, Gyongbuk Provincial Agricultural Technology Administration, Dae-gu 702-708, Republic of Korea

Corresponding author: In-Jung Lee , Tel: 82-53-950-5708,

Received: 12 November 2008 • Accepted: 2 February 2009

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Abstract

We isolated 864 bacteria from 553 soil samples and bioassayed them on cucumber and crown daisy for plant growth promotion. A new bacterial strain, Burkholderia sp. KCTC 11096BP gave maximum growth promotion and was selected for further investigations. The culture filtrate of this bacterium was thus analyzed for the presence of gibberellins and we found physiologically active gibberellins were found (GA1, 0.23 ng/100 ml; GA3, 5.11 ng/100 ml and GA4, 2.65 ng/100 ml) along with physiologically inactive GA9, GA12, GA15, GA20, and GA24. The bacterial isolate also solubilised tricalcium phosphate and lowered the pH of the medium during the process. The isolate was identified as a new strain of Burkholderia through phylogenetic analysis of 16S rDNA sequence. Gibberellin production capacity of genus Burkholderia is reported for the first time in current study.

Keywords: Burkholderia; gibberellins; phosphate solubilization; plant growth; phylogenetic analysis

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Burkholderia sp. KCTC 11096BP as a Newly Isolated Gibberellin Producing Bacterium

J. Microbiol. 2009;47(2):167-171. Published online May 2, 2009

DOI: https://doi.org/10.1007/s12275-008-0273-1

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