Abstract：
:Insect pheromones offer potential for managing pests of crop plants. Volatility and instability are problems for deployment in agriculture but could be solved by expressing genes for the biosynthesis of pheromones in the crop plants. This has now been achieved by genetically engineering a hexaploid variety of wheat to release (E)-β-farnesene (Eβf), the alarm pheromone for many pest aphids, using a synthetic gene based on a sequence from peppermint with a plastid targeting amino acid sequence, with or without a gene for biosynthesis of the precursor farnesyl diphosphate. Pure Eβf was produced in stably transformed wheat lines with no other detectable phenotype but requiring targeting of the gene produced to the plastid. In laboratory behavioural assays, three species of cereal aphids were repelled and foraging was increased for a parasitic natural enemy. Although these studies show considerable potential for aphid control, field trials employing the single and double constructs showed no reduction in aphids or increase in parasitism. Insect numbers were low and climatic conditions erratic suggesting the need for further trials or a closer imitation, in the plant, of alarm pheromone release.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Bruce TJA,Aradottir GI,Smart LE,Martin JL,Caulfield JC,Doherty A,Sparks CA,Woodcock CM,Birkett MA,Napier JA,Jones HD,Pickett JAdoi
10.1038/srep11183subject
Has Abstractpub_date
2015-06-25 00:00:00pages
11183issn
2045-2322pii
srep11183journal_volume
5pub_type
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