Jasmonates elicitor signal transduction

Fig. 5. Model for elicitor signal transduction leading to Str expression. The model shows the positions of CrBPF-1 in a JA-independent, and ORCAs in a JA-dependent, elicitor signal transduction pathway. Protein phosphorylation and calcium influx are required for elicitor-induced jasmonate biosynthesis, as well as for the induction of CrBPF-1, ORCA2, and ORCA3. ORCA activation additionally depends on jasmonate biosynthesis. The positions of the TATA box, the BA region, and the jasmonate- and elicitor-responsive element (JERE) within the Str promoter are indicated...

VAN DER FITS, L., ZHANG, H MENKE, F.L., DENEKA, M MEMELINK, J., A Catharanthm roseus BPF-1 homologue interacts with an elicitor-responsive region of the secondary metabolite biosynthetic gene Str and is induced by elicitor via a jasmonate-independent signal transduction pathway. Plant Mol. Biol., 2000, 44, 675-685. 

On the other hand, the impact of ethylene in the composition of headspace gases fed to Taxus sp. cultures was very evident. The positive involvement of ethylene was also noted when cultures were elicited with both dissolved and volatilized methyl jasmonate and with chitin- and chitosan-derived oligosaccharides. The effect of the latter compounds on biosynthesis of ethylene by the plant cell cultures brings us to a better understanding of the interdependence of elicitor and hormone concentrations and of cross-talk signal transduction in plants. 

---