BABA and Phytophthora nicotianae Induce Resistance to Phytophthora capsici in Chile Pepper (Capsicum annuum).

Autor: Stamler RA; The Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, New Mexico, United States of America., Holguin O; The Department of Plant and Environmental Sciences, New Mexico State University, Las Cruces, New Mexico, United States of America., Dungan B; Chemical Analysis and Instrumentation Laboratory, New Mexico State University, Las Cruces, New Mexico, United States of America., Schaub T; Chemical Analysis and Instrumentation Laboratory, New Mexico State University, Las Cruces, New Mexico, United States of America., Sanogo S; The Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, New Mexico, United States of America., Goldberg N; The Department of Extension Plant Sciences, New Mexico State University, Las Cruces, New Mexico, United States of America., Randall JJ; The Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, New Mexico, United States of America.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2015 May 28; Vol. 10 (5), pp. e0128327. Date of Electronic Publication: 2015 May 28 (Print Publication: 2015).
DOI: 10.1371/journal.pone.0128327
Abstrakt: 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.
Databáze: MEDLINE
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