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Front Plant Sci

Title:		"Gaseous 3-pentanol primes plant immunity against a bacterial speck pathogen, Pseudomonas syringae pv. tomato via salicylic acid and jasmonic acid-dependent signaling pathways in Arabidopsis"
Author(s):		Song GC; Choi HK; Ryu CM;
Address:		"Molecular Phytobacteriology Laboratory, Korea Research Institute of Bioscience and Biotechnology , Daejeon, South Korea. Molecular Phytobacteriology Laboratory, Korea Research Institute of Bioscience and Biotechnology , Daejeon, South Korea ; Biosystems and Bioengineering Program, University of Science and Technology , Daejeon, South Korea"
Journal Title:		Front Plant Sci
Year:		2015
Volume:		20151006
Issue:
Page Number:		821 -
DOI:		10.3389/fpls.2015.00821
ISSN/ISBN:		1664-462X (Print) 1664-462X (Electronic) 1664-462X (Linking)
Abstract:		"3-Pentanol is an active organic compound produced by plants and is a component of emitted insect sex pheromones. A previous study reported that drench application of 3-pentanol elicited plant immunity against microbial pathogens and an insect pest in crop plants. Here, we evaluated whether 3-pentanol and the derivatives 1-pentanol and 2-pentanol induced plant systemic resistance using the in vitro I-plate system. Exposure of Arabidopsis seedlings to 10 muM and 100 nM 3-pentanol evaporate elicited an immune response to Pseudomonas syringae pv. tomato DC3000. We performed quantitative real-time PCR to investigate the 3-pentanol-mediated Arabidopsis immune responses by determining Pathogenesis-Related (PR) gene expression levels associated with defense signaling through salicylic acid (SA), jasmonic acid (JA), and ethylene signaling pathways. The results show that exposure to 3-pentanol and subsequent pathogen challenge upregulated PDF1.2 and PR1 expression. Selected Arabidopsis mutants confirmed that the 3-pentanol-mediated immune response involved SA and JA signaling pathways and the NPR1 gene. Taken together, this study indicates that gaseous 3-pentanol triggers induced resistance in Arabidopsis by priming SA and JA signaling pathways. To our knowledge, this is the first report that a volatile compound of an insect sex pheromone triggers plant systemic resistance against a bacterial pathogen"
Keywords:		3-pentanol Arabidopsis bacterial speck pathogen induced resistance volatile organic compound;
Notes:		"PubMed-not-MEDLINESong, Geun C Choi, Hye K Ryu, Choong-Min eng Switzerland 2015/10/27 Front Plant Sci. 2015 Oct 6; 6:821. doi: 10.3389/fpls.2015.00821. eCollection 2015"