title: Induced expression of defense-related genes in Arabidopsis upon infection with Phytophthora capsici.
abstract: Recognition of pathogens by plants initiates defense responses including activation of defense-related genes and production of antimicrobial compounds. Recently, we reported that Phytophthora capsici can successfully infect Arabidopsis and revealed interaction specificity among various accession-isolate combinations. We used this novel pathosystem to demonstrate that camalexin, indole glucosinolates (iGS) and salicylic acid (SA) have a role in defense against P. capsici. To further investigate the role of camalexin-, iGS- and SA-related pathways in the differential interaction between Arabidopsis and P. capsici, we monitored expression of marker genes over time during infection. In both compatible and incompatible interactions, induction of expression was detected, but in compatible interactions transcript levels of camalexin and iGS marker genes were higher.
authors.affiliation: Laboratory of Phytopathology; Plant Sciences Group; Wageningen University; Wageningen, The Netherlands; College of Plant Protection; Northwest A&F University; Yangling, Shaanxi, PR China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Klaas
authors.initials: K
authors.lastname: Bouwmeester
authors.forename: Judith E
authors.initials: JE
authors.lastname: van de Mortel
authors.forename: Weixing
authors.initials: W
authors.lastname: Shan
authors.forename: Francine
authors.initials: F
authors.lastname: Govers
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism / Q000382:microbiology*; D029681:Arabidopsis Proteins / Q000378:metabolism*; D005961:Glucosinolates / Q000378:metabolism; D054884:Host-Pathogen Interactions; D007211:Indoles / Q000378:metabolism; D010838:Phytophthora / Q000502:physiology*; D057865:Plant Immunity; D013844:Thiazoles / Q000378:metabolism; D000094162:Phytoalexins
chemical_list: D029681:Arabidopsis Proteins; D005961:Glucosinolates; D007211:Indoles; D013844:Thiazoles; C102405:camalexin; D000094162:Phytoalexins
keywords: Arabidopsis; Phytophthora capsici; camalexin; defense signaling; ethylene; indole glucosinolates; jasmonic acid; salicylic acid