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Front Plant Sci

Title:		A Non-targeted Metabolomics Approach Unravels the VOCs Associated with the Tomato Immune Response against Pseudomonas syringae
Author(s):		Lopez-Gresa MP; Lison P; Campos L; Rodrigo I; Rambla JL; Granell A; Conejero V; Belles JM;
Address:		"Instituto de Biologia Molecular y Celular de Plantas, Universitat Politecnica de Valencia - Consejo Superior de Investigaciones Cientificas, Ciudad Politecnica de la InnovacionValencia, Spain"
Journal Title:		Front Plant Sci
Year:		2017
Volume:		20170704
Issue:
Page Number:		1188 -
DOI:		10.3389/fpls.2017.01188
ISSN/ISBN:		1664-462X (Print) 1664-462X (Electronic) 1664-462X (Linking)
Abstract:		"Volatile organic compounds (VOCs) emitted by plants are secondary metabolites that mediate the plant interaction with pathogens and herbivores. These compounds may perform direct defensive functions, i.e., acting as antioxidant, antibacterial, or antifungal agents, or indirectly by signaling the activation of the plant's defensive responses. Using a non-targeted GC-MS metabolomics approach, we identified the profile of the VOCs associated with the differential immune response of the Rio Grande tomato leaves infected with either virulent or avirulent strains of Pseudomonas syringae DC3000 pv. tomato. The VOC profile of the tomato leaves infected with avirulent bacteria is characterized by esters of (Z)-3-hexenol with acetic, propionic, isobutyric or butyric acids, and several hydroxylated monoterpenes, e.g., linalool, alpha-terpineol, and 4-terpineol, which defines the profile of an immunized plant response. In contrast, the same tomato cultivar infected with the virulent bacteria strain produced a VOC profile characterized by monoterpenes and SA derivatives. Interestingly, the differential VOCs emission correlated statistically with the induction of the genes involved in their biosynthetic pathway. Our results extend plant defense system knowledge and suggest the possibility for generating plants engineered to over-produce these VOCs as a complementary strategy for resistance"
Keywords:		VOCs bacteria defense metabolomics tomato;
Notes:		"PubMed-not-MEDLINELopez-Gresa, Maria Pilar Lison, Purificacion Campos, Laura Rodrigo, Ismael Rambla, Jose Luis Granell, Antonio Conejero, Vicente Belles, Jose Maria eng Switzerland 2017/07/21 Front Plant Sci. 2017 Jul 4; 8:1188. doi: 10.3389/fpls.2017.01188. eCollection 2017"