title: Multiple roles of plant volatiles in jasmonate-induced defense response in rice.
abstract: The plant hormone jasmonic acid (JA) has a crucial role in defense responses against pathogens in rice. We recently reported that some volatile compounds accumulate in response to JA treatment, and that the monoterpene linalool plays an important role in JA-induced resistance to rice bacterial blight caused by Xanthomonas oryzae pv oryzae (Xoo) in rice. One of the JA-responsive volatiles, (E,E)-2,4-heptadienal, has both antibacterial and antifungal activity against Xoo, and the rice fungal pathogen Magnaporthe oryzae. In addition, (E,E)-2,4-heptadienal was toxic to rice plants. These phenomena were not observed when linalool was treated. These results indicate that accumulation of the (E,E)-2,4-heptadienal in response to JA is a double-edged sword, but it is essential for survival against pathogen attacks in rice.
authors.affiliation: a Faculty of Agriculture and Gene Research Center; Kagawa University; Miki; Kagawa, Japan.
authors.forename: Keiichiro
authors.initials: K
authors.lastname: Tanaka
authors.forename: Shiduku
authors.initials: S
authors.lastname: Taniguchi
authors.forename: Daisuke
authors.initials: D
authors.lastname: Tamaoki
authors.forename: Kayo
authors.initials: K
authors.lastname: Yoshitomi
authors.forename: Kazuya
authors.initials: K
authors.lastname: Akimitsu
authors.forename: Kenji
authors.initials: K
authors.lastname: Gomi
mesh_terms: D000080462:Acyclic Monoterpenes; D000447:Aldehydes / Q000378:metabolism* / Q000494:pharmacology; D000466:Alkadienes / Q000378:metabolism* / Q000494:pharmacology; D000595:Amino Acid Sequence; D003517:Cyclopentanes / Q000378:metabolism*; D060467:Disease Resistance; D020082:Magnaporthe / Q000187:drug effects / Q000254:growth & development; D039821:Monoterpenes / Q000378:metabolism / Q000494:pharmacology; D009822:Oils, Volatile / Q000378:metabolism* / Q000494:pharmacology; D012275:Oryza / Q000254:growth & development / Q000378:metabolism* / Q000382:microbiology; D054883:Oxylipins / Q000378:metabolism*; D010935:Plant Diseases / Q000382:microbiology*; D010937:Plant Growth Regulators / Q000378:metabolism; D014974:Xanthomonas / Q000187:drug effects / Q000254:growth & development
chemical_list: D000080462:Acyclic Monoterpenes; D000447:Aldehydes; D000466:Alkadienes; D003517:Cyclopentanes; D039821:Monoterpenes; D009822:Oils, Volatile; D054883:Oxylipins; D010937:Plant Growth Regulators; C011006:jasmonic acid; C018584:linalool; C502503:2,4-heptadienal
keywords: (E,E)-2,4-heptadienal; Magnaporthe oryzae; Xanthomonas oryzae; jasmonic acid; plant volatile