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http://dx.doi.org/10.5338/KJEA.2009.28.4.447

Isolation and Characterization of Bacillus cereus A-139 Producing Auxin from East Coast Sand Dunes  

So, Jai-Hyun (School of Applied Biosciences, Kyungpook National University)
Kim, Duk-Jin (School of Applied Biosciences, Kyungpook National University)
Shin, Jae-Ho (School of Applied Biosciences, Kyungpook National University)
Yu, Choon-Bal (Department of Food Science and Engineering, Daegu University)
Rhee, In-Koo (School of Applied Biosciences, Kyungpook National University)
Publication Information
Korean Journal of Environmental Agriculture / v.28, no.4, 2009 , pp. 447-452 More about this Journal
Abstract
A bacterium, which was named to be Bacillus cereus A-139, secreting auxin was isolated from the east coast sand dunes in Korea. The secretion of auxin was confirmed by HPLC. When cultured in LB broth, Bacillus cereus A-139 produced $16.12\;{\mu}$g/mL auxin after 8 days in LB broth. Bacillus cereus A-139 produced $49\;{\mu}$g/mL auxin and $162.6\;{\mu}$g/mL by the addition of 2% tryptone and 0.1% tryptophan, respectively. The root growth of Arabidopsis thaliana was retarded by Bacillus cereus A-139 culture broth up to 57% but the formation of lateral roots was increased up to almost twice after 4 days incubation. Also the formation of lateral roots of mung bean was increased up to 57% after 10 days incubation.
Keywords
Auxin; Bacillus cereus; Root growth retardation; Sand Dunes;
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