title: Role of salicylic acid in tomato defense against cotton bollworm, Helicoverpa armigera Hubner.
abstract: We investigated the role of the salicylic acid (SA) signaling pathway in defense responses of tomato plants to the herbivore, cotton bollworm. After exposure to the cotton bollworm, tomato leaves rapidly accumulated a high level of SA. The transcription of PR1 and BGL2 genes, the marker genes of SA pathway, was up-regulated. An enhanced endogenous SA level was accompanied by an increase in the endogenous H2O2 level as compared with controls. Spraying tomato plants with a solution containing either SA or methyl salicylic acid (Me-SA), the H2O2 level dramatically increased. These data proved that the SA pathway was involved in the tomato plant defense responses to the herbivore.
authors.affiliation: Institute of Plant Physiology and Ecology, The Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China.
authors.forename: Jinying
authors.initials: J
authors.lastname: Peng
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Deng
authors.forename: Jianhua
authors.initials: J
authors.lastname: Huang
authors.forename: Shihai
authors.initials: S
authors.lastname: Jia
authors.forename: Xuexia
authors.initials: X
authors.lastname: Miao
authors.forename: Yongping
authors.initials: Y
authors.lastname: Huang
mesh_terms: D000818:Animals; D001483:Base Sequence; D017931:DNA Primers; D017343:Genes, Plant; D006861:Hydrogen Peroxide / Q000378:metabolism; D007113:Immunity, Innate; D007915:Lepidoptera / Q000472:pathogenicity*; D018551:Solanum lycopersicum / Q000235:genetics / Q000254:growth & development / Q000469:parasitology*; D010935:Plant Diseases / Q000469:parasitology; D020133:Reverse Transcriptase Polymerase Chain Reaction; D020156:Salicylic Acid / Q000378:metabolism*
chemical_list: D017931:DNA Primers; D006861:Hydrogen Peroxide; D020156:Salicylic Acid