title: The presence of Drosophila melanogaster sex peptide-like immunoreactivity in the accessory glands of male Helicoverpa armigera.
abstract: In this study a highly specific polyclonal antibody to DrmSP was produced and used to develop and standardize a sensitive direct ELISA. Structure-activity studies revealed that the antiserum is specific to the N-terminal of DrmSP. This ELISA was used for the detection of DrmSP-like immunoreactivity in the reproductive tissues of male Helicoverpa armigera moths at femtomole levels. Two positive immunoreactive peaks were found in HPLC purified extracts of male accessory glands. The immunoreactive peak, which contained a higher amount of immunoreactivity, was also found to be pheromonostatic in PBAN-injected decapitated females as well as in intact female moths during their peak pheromone production. Lower levels of DrmSP-like immunoreactivity were found in younger males (1-2 day-old) when compared to older males (3-7 day-old).
authors.affiliation: Department of Entomology, The Hebrew University, P.O. Box 12, Rehovot 76100, Israel.
authors.forename: Vidya K
authors.initials: VK
authors.lastname: Nagalakshmi
authors.forename: Shalom W
authors.initials: SW
authors.lastname: Applebaum
authors.forename: Eric
authors.initials: E
authors.lastname: Kubli
authors.forename: Yves
authors.initials: Y
authors.lastname: Choffat
authors.forename: Ada
authors.initials: A
authors.lastname: Rafaeli
mesh_terms: D000818:Animals; D029721:Drosophila Proteins; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods / Q000662:veterinary; D005260:Female; D005837:Genitalia, Male / Q000378:metabolism*; D019476:Insect Proteins / Q000378:metabolism*; D036341:Intercellular Signaling Peptides and Proteins; D007915:Lepidoptera / Q000378:metabolism*; D008297:Male; D010455:Peptides / Q000378:metabolism*; D010675:Pheromones / Q000378:metabolism*; D012726:Sexual Behavior, Animal / Q000502:physiology
chemical_list: D029721:Drosophila Proteins; D019476:Insect Proteins; D036341:Intercellular Signaling Peptides and Proteins; D010455:Peptides; D010675:Pheromones; C489177:Acp36DE protein, Drosophila; C056736:SP protein, Drosophila