| Title: | "cis-Jasmone induces accumulation of defence compounds in wheat, Triticum aestivum" |
| Author(s): | Moraes MC; Birkett MA; Gordon-Weeks R; Smart LE; Martin JL; Pye BJ; Bromilow R; Pickett JA; |
| Address: | "Embrapa Genetic Resources and Biotechnology, Cx. Postal: 02372, Cep. 70849-970 Brasilia-DF, Brazil" |
| DOI: | 10.1016/j.phytochem.2007.06.020 |
| ISSN/ISBN: | 0031-9422 (Print) 0031-9422 (Linking) |
| Abstract: | "Liquid phase extraction (LPE) and vapor phase extraction (VPE) methodologies were used to evaluate the impact of the plant activator, cis-jasmone, on the secondary metabolism of wheat, Triticum aestivum, var. Solstice. LPE allowed the measurement of benzoxazinoids, i.e. 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one (DIMBOA), 2-hydroxy-7-methoxy-1,4-benzoxazin-3-one (HMBOA) and 6-methoxy-benzoxazolin-2-one (MBOA), and phenolic acids such as trans-p-coumaric acid, syringic acid, p-hydroxybenzoic acid, vanillic acid and cis- and trans-ferulic acid. Using LPE, a significantly higher level of DIMBOA was found in aerial parts and roots of T. aestivum following treatment with cis-jasmone, when compared with untreated plants. Similar results were obtained for phenolic acids, such as trans-ferulic acid and vanillic acid in roots. Using VPE, it was possible to measure levels of 2-hydroxy-7-methoxy-(2H)-1,4-benzoxazin-3(4H)-one (HBOA), benzoxazolin-2(3H)-one (BOA), ferulic acid, syringic acid and coumaric acid. The levels of HBOA in aerial parts and roots were significantly greater in cis-jasmone treated plants compared to untreated plants. cis-Jasmone is known to be a plant activator in terms of production of defence-related volatile semiochemicals that repel aphids and increase the foraging activity of aphid parasitoids. These results show, for the first time, that cis-jasmone also induces selective production of secondary metabolites that are capable of directly reducing development of pests, diseases and weeds" |
| Keywords: | "Acetamides Cyclopentanes/*pharmacology Diazomethane/analogs & derivatives/chemistry Fluoroacetates Gas Chromatography-Mass Spectrometry Heterocyclic Compounds, 2-Ring/analysis/chemistry Oxylipins/*pharmacology Plant Components, Aerial/chemistry/drug effec;" |
| Notes: | "MedlineMoraes, Maria C Blassioli Birkett, Michael A Gordon-Weeks, Ruth Smart, Lesley E Martin, Janet L Pye, Barry J Bromilow, Richard Pickett, John A eng Biotechnology and Biological Sciences Research Council/United Kingdom Research Support, Non-U.S. Gov't England 2007/08/08 Phytochemistry. 2008 Jan; 69(1):9-17. doi: 10.1016/j.phytochem.2007.06.020. Epub 2007 Aug 2" |
