Promotion of plant growth by Pseudomonas fluorescens strain SS101 via novel volatile organic compounds

Volatile organic compounds (VOCs) from plant growth-promoting rhizobacteria (PGPR) play key roles in modulating plant growth and induced systemic resistance (ISR) to pathogens. Despite their significance, the physiological functions of the specific VOCs produced by Pseudomonas fluorescens SS101 (Pf....

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Published in:	Biochemical and biophysical research communications Vol. 461; no. 2; pp. 361 - 365
Main Authors:	Park, Yong-Soon, Dutta, Swarnalee, Ann, Mina, Raaijmakers, Jos M., Park, Kyungseok
Format:	Journal Article
Language:	English
Published:	United States Elsevier Inc 29-05-2015
Subjects:	13-Tetradecadien-1-ol Alkenes - chemistry Alkenes - isolation & purification Alkenes - metabolism GC–MS Plant Development Plant growth promotion Pseudomonas fluorescens Pseudomonas fluorescens - chemistry Pseudomonas fluorescens - physiology Pseudomonas fluorescens SS101 Triticum - growth & development Triticum - microbiology VOCs Volatile Organic Compounds - chemistry Volatile Organic Compounds - isolation & purification Volatile Organic Compounds - metabolism VOCs Pseudomonas fluorescens SS101 GC–MS Plant growth promotion 13-Tetradecadien-1-ol
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Summary:	Volatile organic compounds (VOCs) from plant growth-promoting rhizobacteria (PGPR) play key roles in modulating plant growth and induced systemic resistance (ISR) to pathogens. Despite their significance, the physiological functions of the specific VOCs produced by Pseudomonas fluorescens SS101 (Pf.SS101) have not been precisely elucidated. The effects of Pf.SS101 and its VOCs on augmentation of plant growth promotion were investigated in vitro and in planta. A significant growth promotion was observed in plants exposed Pf.SS101 under both conditions, suggesting that its VOCs play a key role in promoting plant growth. Solid-phase micro-extraction (SPME) and a gas chromatography-mass spectrophotometer (GC–MS) system were used to characterize the VOCs emitted by Pf.SS101 and 11 different compounds were detected in samples inoculated this bacterium, including 13-Tetradecadien-1-ol, 2-butanone and 2-Methyl-n-1-tridecene. Application of these compounds resulted in enhanced plant growth. This study suggests that Pf.SS101 promotes the growth of plants via the release of VOCs including 13-Tetradecadien-1-ol, 2-butanone and 2-Methyl-n-1-tridecene, thus increasing understanding of the role of VOCs in plant-bacterial inter-communication. •Pf.SS101 facilitates plant growth promotion.•VOCs derived from Pf.SS101 are key components in plant growth promotion.•Eleven different VOCs are identified from Pf.SS101.•13-Tetradecadien-1-ol, 2-Methyl-n-1-tridecene and 2-Butanone significantly enhance plant growth promotion.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0006-291X 1090-2104
DOI:	10.1016/j.bbrc.2015.04.039