The octadecanoic pathway: signal molecules for the regulation of secondary pathways.

Amino acid conjugates of jasmonic acid induce jasmonate‐responsive gene expression in barley (Hordeum vulgare L.) leaves

“…[10]). A similar rise of jasmonates occurs upon elicitation of cell suspension cultures leading to phytoalexin synthesis [11,12]. Interestingly, JA amino acid conjugates were also found to increase in response to environmental stress.…”

A Gene Encoding a Chloroplast-Targeted Lipoxygenase in Tomato Leaves Is Transiently Induced by Wounding, Systemin, and Methyl Jasmonate

“…The intracellular signaling cascade that is activated in response to wounding and systemin has been shown to involve a lipid-derived pathway leading to the synthesis of PDA and JA (Farmer and Ryan, 1992;Blechert et al, 1995), two powerful activators of defense gene transcription. PDA and JA are derived from linolenic acid, an abundant fatty acid in plant membranes, by cyclization of a LOX-generated hydroperoxide to produce 12-oxo-PDA, with subsequent 0-oxidations of PDA (Vick and Zimmerman, 1983) to produce JA.…”

Structure-Activity Relationships of Synthetic Analogs of Jasmonic Acid and Coronatine on Induction of Benzophenanthridine Alkaloid Accumulation in Eschscholzia californica Cell Cultures

“…The jasmonate biosynthetic precursor 12-oxo-phytodienoic acid induced biosynthesis of benzo [c]phenanthridine alkaloids in a manner similar to methyl jasmonate (Kutchan, 1993). The E. californica test system was further exploited to show that ␤-oxidation of 10,11-dihydro-12-oxo-phytodienoic acid is not necessary for biological activity, implying that an octadecanoid-jasmonic acid biosynthetic precursor may be the in planta signal molecule (Blechert et al, 1995). A wide range of derivatives, based on the structure of jasmonic acid, were tested for biological activity in various bioassays such as E. californica elicitation, Bryonia dioica tendril coiling and barley senescence.…”