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JXB Advance Access published online on January 30, 2004
Journal of Experimental Botany, doi:10.1093/jxb/erh072
© 2004 by Oxford University Press
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Received September 15, 2003; accepted November 25, 2003
© 2004 Society for Experimental Biology

Gene note

Isolation and expression pattern of two putative acyl-ACP desaturase cDNAs from Bassia scoparia

Heather M. Whitney 1, Olga Sayanova 2, John A. Pickett 3, and Johnathan A. Napier 2*

1 Long Ashton Research Station, Long Ashton, Bristol BS41 9AF, UK; Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, UK
2 Long Ashton Research Station, Long Ashton, Bristol BS41 9AF, UK; Rothamsted Research, Harpenden, Herts AL5 2JQ, UK
3 Rothamsted Research, Harpenden, Herts AL5 2JQ, UK

* To whom correspondence should be addressed. E-mail: johnathan.napier{at}bbsrc.ac.uk.


  Abstract

The seed lipids of some higher plants contain unusual fatty acids with potentially valuable non-food uses. Seeds of Bassia scoparia contain one such monounsaturated fatty acid, 16:1{Delta}5. This fatty acid can be used for the production of an insect oviposition pheromone, which is potentially valuable in the control of the mosquito Culex quinquefasciatus, a vector of West Nile virus. Previous work has established that a number of unusual monounsaturated fatty acids are produced by variant forms of the ubiquitous acyl-ACP desaturases. The isolation and initial characterization of two putative acyl-ACP desaturases from B. scoparia, one of which is seed-specific, suggests that such a variant enzyme occurs in this species.

Key words: Acyl-ACP desaturase, Bassia scoparia, Culex quinquefasciatus, oviposition pheromone, unusual fatty acid, West Nile virus.


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