Epiphyas postvittana

Chile and New Zealand) Leaves pinosylvin (appear to act in concert) (Ctenopsteustis obliquana, Epiphyas postvittana) ... 

Changes in reductase activity could result in altered pheromone amounts. The lightbrown apple moth, Epiphyas postvittana, exhibits a decline in pheromone titers with age that is not due to reduced PBAN levels (Foster and Roelofs, 1994). To determine what is responsible for the decline in titers, different deuterium-labeled precursors were applied to the glands of different aged females. Biosynthesis of the major pheromone component, Ell-14 OAc, occurs by chain shortening 16 acid to 14 acid followed by Ell desaturation, reduction, and acetylation (Foster and Roelofs, 1990). Application of deuterium-labeled intermediates indicated that the senescent decline in pheromone titers was due to the reduction in fatty acid reductase activity (Foster and Greenwood, 1997). It is unknown if a decline in reductase enzyme activity is also responsible for observed senescent decline in pheromone titers of other female moths (Foster and Greenwood, 1997). 

Foster S. P. and Greenwood D. R. (1997) Change in reductase activity is responsible for senescent decline in sex pheromone titre in the lightbrown apple moth, Epiphyas postvittana (Walker). J. Insect Physiol. 43, 1093-1100. 

Epiphyas postvittana Epos-PBP1 AF416588 Newcomb et al. (2002)... 

Newcomb R. D., Sirey T. M., Rassam M. and Greenwood D. R. (2002) Pheromone binding proteins of Epiphyas postvittana (Lepidoptera Tortricidae) are encoded at a single locus. Insect Biochem. Mol. Biol, (in press). 

Aminopeptidases have also been identified from other insect species as Cryl binding protein. Aminopeptidase cDNAs have been cloned from M. sexta [124], Plutella xylostella [129], Plodia interpunctella [130,131], Helicoverpa punctigera [132], B. mori [133-135], Epiphyas postvittana [136], Trichoplusia ni [137], andX. dispar [138,139]. Based on homology analysis of aminopeptidases clones from these insects it appears tiiat lepidopteran insects each have at least four aminopeptidases with different affinities for Cryl A toxins (Figure 2). 

Figure 4. Effects of essential oils on light brown apple moth, Epiphyas postvittana.

Simpson, R.M., Burgess, E.P.J. and Markwick, N.P. (1997). Bacillus thuringiensis delta-endotoxin binding sites in two Lepidoptera, Wiseana spp. and Epiphyas postvittana. J. Invertebr. Pathol. 70,136-142. 

Bartell, R.J. Pheromone-Mediated Behavior of Male Lightbrown Apple Moth, Epiphyas postvittana. Correlated with Adaptation of Pheromone Receptors, Physiol. Entomol. 10, 121-126 (1985). 

Simpson, R.M. and R.D. Newcomb. 2000. Binding oiBacillus thuringiensis delta-endotoxins CrylAc and CrylBa to a 120-kDa aminopeptidase-N of Epiphyas postvittana purified from both brush border membrane vesicles and baculovirus-infected Sf9 cells. Insect Biochem. Mol. Biol. 11 1069-1078. 

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