A - Papers appearing in refereed journals
Pickett, J. A., Birkett, M. A., Blassioli Moraes, M. C., Bruce, T. J. A., Chamberlain, K., Gordon-Weeks, R., Matthes, M. C., Napier, J. A., Smart, L. E., Wadhams, L. J. and Woodcock, C. M. 2007. cis -Jasmone as allelopathic agent in inducing plant defence. Allelopathy Journal. 19 (1), pp. 109-118.
|Authors||Pickett, J. A., Birkett, M. A., Blassioli Moraes, M. C., Bruce, T. J. A., Chamberlain, K., Gordon-Weeks, R., Matthes, M. C., Napier, J. A., Smart, L. E., Wadhams, L. J. and Woodcock, C. M.|
The study of plant/insect interactions, particularly in multitrophic systems, it is possible to identify the insect semiochemicals that may induce defence responses in plants. From such work, cis-jasmone was identified as having highly specific and persistent effects in regulating the expression of genes associated with plant defence. The molecular genetic mechanisms involved are being investigated in Arabiclopsis thaliana by microan-ay analyses, the use of knockout lines and by functional gene expression studies in A. thallana and other systems. In cereals, there are major varietal differences in the level of defence induced by cis¬-jasmone. With some elite cultivars, long term protection against aphids has been established in the field. Chemical studies and investigations with insects using electrophysiological and behavioural assays have shown that 6-methy1-5-hepten-2-one, the production of which is induced by cis-jasmone, is highly active in reducing aphid colonisation and increasing foraging by parasitoids. Differential induction between cultivars may provide a useful means to elucidate the associated genetics. In both wheat and barley, there is additionally an induction with cis-jasmone of antibiotic effects against aphids. In wheat, this appears to be due to enhanced production of hydroxamic acids. For these secondary metabolites, the associated genes are known and RT-PCR is used to determine the induction of expression. MS", after derivatisation and chromatography, provides analytical tool to estimate these and unknown antibiotic agents in barley.
|Keywords||Allelopathy; Arabidopsis; cis-jasmone; defence; induction; insect|
|Year of Publication||2007|
|Journal citation||19 (1), pp. 109-118|
|Web address (URL)||http://www.allelopathyjournal.org/paper/?url=http://www.allelopathyjournal.org/Journal_Articles/AJ%2019%20(1)%20January,%202007%20(109-117).pdf|
|Open access||Published as bronze (free) open access|
|Funder project or code||514|
|Insect chemical ecology: identification and production of chemical signals (semiochemicals)|
|Insect chemical ecology: understanding the roles and underlying mechanisms of chemical signals (semiochemicals)|
|Identification and provision of potential semiochemical tools for use in integrated crop protection|
|Delivery of semiochemicals within plant-pest natural enemy systems|
|A framework for the practical use of semiochemicals in field crops|
|Online||01 Jan 2007|