Plant stress signalling: understanding and exploiting plant-plant interactions

A - Papers appearing in refereed journals

Pickett, J. A., Rasmussen, H. B., Woodcock, C. M., Matthes, M. C. and Napier, J. A. 2003. Plant stress signalling: understanding and exploiting plant-plant interactions. Biochemical Society Transactions. 31 (1), pp. 123-127.

AuthorsPickett, J. A., Rasmussen, H. B., Woodcock, C. M., Matthes, M. C. and Napier, J. A.
Abstract

When plants are attacked by insects, volatile chemical signals can be released, not only from the damaged parts, but also systemically from other parts of the plant and this continues after cessation of feeding by the insect. These signals are perceived by olfactory sensory mechanisms in both the herbivorous insects and their parasites. Molecular structures involved can be characterized by means of electrophysiological assays, using the insect sensory system linked to chemical analysis. Evidence is mounting that such signals can also affect neighbouring intact plants, which initiate defence by the induction of further signalling systems, such as those that increase parasitoid foraging. Furthermore, insect electrophysiology can be used in the identification of plant compounds having effects on the plants themselves. It has been found recently that certain plants can release stress signals even when undamaged, and that these can cause defence responses in intact plants. These discoveries provide the basis for new crop protection strategies, that are either delivered by genetic modification of plants or by conventionally produced plants to which the signal is externally applied. Delivery can also be made by means of mixed seed strategies in which the provoking and recipient plants are grown together. Related signalling discoveries within the rhizosphere seem set to extend these approaches into new ways of controlling weeds, by exploiting the elusive potential of allelopathy, but through signalling rather than by direct physiological effects.

Year of Publication2003
JournalBiochemical Society Transactions
Journal citation31 (1), pp. 123-127
Digital Object Identifier (DOI)doi:10.1042/bst0310123
Open accessPublished as non-open access
Funder project or code437
415
503
514
Output statusPublished
ISSN0300-5127
PublisherPortland Press Ltd

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