title: Phospholipidic signaling and vanillin production in response to salicylic acid and methyl jasmonate in Capsicum chinense J. cells.
abstract: The phospholipidic signal transduction system involves generation of second messengers by hydrolysis or changes in phosphorylation state. Several studies have shown that the signaling pathway forms part of plant response to phytoregulators such as salicylic acid (SA) and methyl jasmonate (MJ), which have been widely used to stimulate secondary metabolite production in cell cultures. An evaluation was made of the effect of SA and MJ on phospholipidic signaling and capsaicinoid production in Capsicum chinense Jacq. suspension cells. Treatment with SA inhibited phospholipase C (PLC) (EC: 3.1.4.3) and phospholipase D (PLD) (EC: 3.1.4.4) activities in vitro, but increased lipid kinase activities in vitro at different SA concentrations. Treatment with MJ produced increases in PLC and PLD activities, while lipid kinase activities were variable and dose-dependent. The production of vanillin, a precursor of capsaicinoids, increased at specific SA or MJ doses. Preincubation with neomycin, a phospholipase inhibitor, before SA or MJ treatment inhibits increase in vanillin production which suggests that phospholipidic second messengers may participate in the observed increase in vanillin production.
authors.affiliation: Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán (CICY), Calle 43 No. 130, Col. Chuburná de Hidalgo, 97200 Merida, Yucatán, Mexico.
authors.forename: Alma R
authors.initials: AR
authors.lastname: Altúzar-Molina
authors.forename: J Armando
authors.initials: JA
authors.lastname: Muñoz-Sánchez
authors.forename: Felipe
authors.initials: F
authors.lastname: Vázquez-Flota
authors.forename: Miriam
authors.initials: M
authors.lastname: Monforte-González
authors.forename: Graciela
authors.initials: G
authors.lastname: Racagni-Di Palma
authors.forename: S M Teresa
authors.initials: SM
authors.lastname: Hernández-Sotomayor
mesh_terms: D000085:Acetates / Q000494:pharmacology*; D001547:Benzaldehydes / Q000378:metabolism*; D002212:Capsicum / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism*; D002478:Cells, Cultured; D003517:Cyclopentanes / Q000494:pharmacology*; D054883:Oxylipins / Q000494:pharmacology*; D010739:Phospholipase D / Q000378:metabolism; D010743:Phospholipids / Q000378:metabolism*; D020156:Salicylic Acid / Q000494:pharmacology*; D010738:Type C Phospholipases / Q000378:metabolism
chemical_list: D000085:Acetates; D001547:Benzaldehydes; D003517:Cyclopentanes; D054883:Oxylipins; D010743:Phospholipids; C072239:methyl jasmonate; C100058:vanillin; D010738:Type C Phospholipases; D010739:Phospholipase D; D020156:Salicylic Acid