title: BABA and Phytophthora nicotianae Induce Resistance to Phytophthora capsici in Chile Pepper (Capsicum annuum).
abstract: Induced resistance in plants is a systemic response to certain microorganisms or chemicals that enhances basal defense responses during subsequent plant infection by pathogens. Inoculation of chile pepper with zoospores of non-host Phytophthora nicotianae or the chemical elicitor beta-aminobutyric acid (BABA) significantly inhibited foliar blight caused by Phytophthora capsici. Tissue extract analyses by GC/MS identified conserved change in certain metabolite concentrations following P. nicotianae or BABA treatment. Induced chile pepper plants had reduced concentrations of sucrose and TCA cycle intermediates and increased concentrations of specific hexose-phosphates, hexose-disaccharides and amino acids. Galactose, which increased significantly in induced chile pepper plants, was shown to inhibit growth of P. capsici in a plate assay.
authors.affiliation: The Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, New Mexico, United States of America.
authors.forename: Rio A
authors.initials: RA
authors.lastname: Stamler
authors.affiliation: The Department of Plant and Environmental Sciences, New Mexico State University, Las Cruces, New Mexico, United States of America.
authors.forename: Omar
authors.initials: O
authors.lastname: Holguin
authors.affiliation: Chemical Analysis and Instrumentation Laboratory, New Mexico State University, Las Cruces, New Mexico, United States of America.
authors.forename: Barry
authors.initials: B
authors.lastname: Dungan
authors.affiliation: Chemical Analysis and Instrumentation Laboratory, New Mexico State University, Las Cruces, New Mexico, United States of America.
authors.forename: Tanner
authors.initials: T
authors.lastname: Schaub
authors.affiliation: The Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, New Mexico, United States of America.
authors.forename: Soumaila
authors.initials: S
authors.lastname: Sanogo
authors.affiliation: The Department of Extension Plant Sciences, New Mexico State University, Las Cruces, New Mexico, United States of America.
authors.forename: Natalie
authors.initials: N
authors.lastname: Goldberg
authors.affiliation: The Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, New Mexico, United States of America.
authors.forename: Jennifer J
authors.initials: JJ
authors.lastname: Randall
mesh_terms: D000613:Aminobutyrates / Q000494:pharmacology*; D002212:Capsicum / Q000378:metabolism* / Q000382:microbiology; D002952:Citric Acid Cycle / Q000187:drug effects; D060467:Disease Resistance / Q000187:drug effects*; D010838:Phytophthora / Q000378:metabolism*; D010935:Plant Diseases / Q000382:microbiology*
chemical_list: D000613:Aminobutyrates; C047667:3-aminobutyric acid