8(Z),11(Z),14(Z)-Heptadecatrienal

8(Z),11(Z),14(Z)-Heptadecatrienal is a polyunsaturated fatty aldehyde. It is formed from α-linolenic acid via a 2(R)-hydroperoxy-9(Z),12(Z),15(Z)-octadecatrienoic acid intermediate.^[1] It is also a degradation product of 2(R)-hydroperoxy linolenic acid. 8(Z),11(Z),14(Z)-Heptadecatrienal (100 µM) is active against the plant pathogenic bacteria P. syringae.^[2] It protects Arabidopsis plants against infection by the bacteria Pst DC3000 when injected into the leaves at a concentration of 150 µM prior to bacterial inoculation.^[3]

References:
[1].Hamberg, M., Sanz, A., and Castresana, C.α-Oxidation of fatty acids in higher plants. Identification of a pathogen-inducible oxygenase (PIOX) as an α-dioxygenase and biosynthesis of 2-hydroperoxylinolenic acidJ. Biol. Chem.274(35)24503-24513(1999).
[2].Prost, I., Dhondt, S., Rothe, G., et al.Evaluation of the antimicrobial activities of plant oxylipins supports their involvement in defense against pathogensPlant Physiol.139(4)1902-1913(2005).
[3].Vicente, J., Cascón, T., Vicedo, B., et al.Role of 9-lipoxygenase and α-dioxygenase oxylipin pathways as modulators of local and systemic defenseMol. Plant5(4)914-928(2012).