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http://dx.doi.org/10.7585/kjps.2013.17.4.388

Growth Promotion of Tobacco Plant by 3-hydroxy-2-Butanone from Bacillus vallismortis EXTN-1  

Ann, Mi Na (Microbial Plant Activation Lab, Division of Agricultural Microbiology, Department of Crop Life Safety, National Academy of Agricultural Sciences, Rural Development Administration)
Cho, Yung Eun (Microbial Plant Activation Lab, Division of Agricultural Microbiology, Department of Crop Life Safety, National Academy of Agricultural Sciences, Rural Development Administration)
Ryu, Ho Jin (Microbial Plant Activation Lab, Division of Agricultural Microbiology, Department of Crop Life Safety, National Academy of Agricultural Sciences, Rural Development Administration)
Kim, Heung Tae (Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University)
Park, Kyungseok (Microbial Plant Activation Lab, Division of Agricultural Microbiology, Department of Crop Life Safety, National Academy of Agricultural Sciences, Rural Development Administration)
Publication Information
The Korean Journal of Pesticide Science / v.17, no.4, 2013 , pp. 388-393 More about this Journal
Abstract
It has been well documented that Bacillus vallismortis strain EXTN-1, a beneficial rhizosphere bacterium, could enhance plant growth and induce systemic resistance to diverse pathogens in plants. However, the molecular mechanisms for how the EXTN-1 promote plant growth and induce resistances to diverse pathogens. Here, we show that 3-Hydroxy-2-butanone, a volatile organic compound (VOCs) emitted from the EXTN1, is a key factor for the bacteria-mediated beneficial effects on plant growth and defense systems. We found that the presence of volatile signals of EXTN-1 resulted in growth promotion of tobacco seedlings. The identification and analysis of EXTN-1-secreted volatile signals by solid-phase microextraction (SPME) and gas chromatography/mass spectrometry (GC/MS) indicated that a 3-hydroxy-2-butanone could provide not only the plant growth promotion, but also higher resistance against Pectobacterium carotovorum SCC1. These results suggest that a volatile compound released from EXTN-1 enhances the plant growth promotion and immunity of plants.
Keywords
Bacillus vallismortis EXTN-1; volatile; 3-Hydroxy-2-butanone;
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Times Cited By KSCI : 2  (Citation Analysis)
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