Field Evaluation of the Bacterial.pdf

J Chem Ecol (2014) 40:882–892 DOI 10.1007/s10886-014-0488-z Field Evaluation of the Bacterial Volatile Derivative 3-Pentanol in Priming for Induced Resistance in Pepper Hye Kyung Choi Geun Cheol Song Hwe-Su Yi Choong-Min Ryu Received: 18 April 2014 /Revised: 30 June 2014 /Accepted: 12 August 2014 /Published online: 23 August 2014 # Springer Science+Business Media New York 2014 Abstract Plants are defended from attack by emission of CaPR2, and Ca protease inhibitor2 (CaPIN2) increased in volatile organic compounds (VOCs) that can act directly field-grown pepper plants treated with 3-pentanol. Taken to- against pathogens and herbivores or indirectly by recruiting gether, our results show that 3-pentanol triggers induced re- natural enemies of herbivores. However, microbial VOC have sistance by priming SA and JA signaling in pepper under field been less investigated as potential triggers of plant systemic conditions. defense responses against pathogens in the field. Bacillus amyloliquefaciens strain IN937a, a plant growth-promoting Keywords 3-Pentanol . Pepper . Defense priming . ISR . rhizobacterium that colonizes plant tissues, stimulates induced PGPR . Systemic acquired resistance . Volatile organic systemic resistance (ISR) via its emission of VOCs. We in- compound vestigated the ISR capacity of VOCs and derivatives collected from strain IN937a against bacterial spot disease caused by Abbreviations Xanthomonas axonopodis pv. vesicatoria in pepper. Of 15 PGPR Plant growth-promoting rhizobacteria bacterial VOCs and their derivatives, 3-pentanol, which is a ISR Induced systemic resistance C8 amyl alcohol reported to be a component of sex p