title: Promotion of plant growth by Pseudomonas fluorescens strain SS101 via novel volatile organic compounds.
abstract: 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.
authors.affiliation: Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration, Wanju 565-851, South Korea.
authors.forename: Yong-Soon
authors.initials: YS
authors.lastname: Park
authors.affiliation: Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration, Wanju 565-851, South Korea.
authors.forename: Swarnalee
authors.initials: S
authors.lastname: Dutta
authors.affiliation: Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration, Wanju 565-851, South Korea.
authors.forename: Mina
authors.initials: M
authors.lastname: Ann
authors.affiliation: Department of Microbial Ecology, Netherlands Institute of Ecology, 6708 PB, Wageningen, The Netherlands.
authors.forename: Jos M
authors.initials: JM
authors.lastname: Raaijmakers
authors.affiliation: Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration, Wanju 565-851, South Korea. Electronic address: kspark3383@korea.kr.
authors.forename: Kyungseok
authors.initials: K
authors.lastname: Park
mesh_terms: D000475:Alkenes / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism; D063245:Plant Development; D011551:Pseudomonas fluorescens / Q000737:chemistry / Q000502:physiology*; D014908:Triticum / Q000254:growth & development* / Q000382:microbiology*; D055549:Volatile Organic Compounds / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D000475:Alkenes; D055549:Volatile Organic Compounds; C466308:alpha, omega-tetradecadiene; C028691:1-tridecene
keywords: 13-Tetradecadien-1-ol; GC–MS; Plant growth promotion; Pseudomonas fluorescens SS101; VOCs