title: Methyl farnesoate and juvenile hormone production in embryos of Diploptera punctata in relation to innervation of corpora allata and their sensitivity to allatostatin.
abstract: Corpora allata (CA) of embryos of Diploptera punctata have been previously shown to produce JH III. We have re-examined sesquiterpenoid biosynthesis throughout embryonic development and have found that early embryos produce both methyl farnesoate (MF) and JH III; as development proceeds, less MF and more JH is produced. The cockroach allatostatin peptide Dippu-allatostatin (AST) 7 inhibits sesquiterpenoid production by CA of mid to late embryos whereas it exerts a dose-dependent stimulatory effect in early embryos. This stimulatory effect is particularly apparent on MF biosynthesis. CA become innervated by allatostatin-containing nerves in early embryos (35% development). Shortly thereafter, the allatostatin-containing innervation of the CA appears complete.
authors.affiliation: Department of Biological Sciences, University of Iowa, Iowa City 52242, USA.
authors.forename: B
authors.initials: B
authors.lastname: Stay
authors.forename: J R
authors.initials: JR
authors.lastname: Zhang
authors.forename: S S
authors.initials: SS
authors.lastname: Tobe
mesh_terms: D000818:Animals; D003058:Cockroaches / Q000196:embryology / Q000378:metabolism*; D003335:Corpora Allata / Q000196:embryology*; D047108:Embryonic Development; D005231:Fatty Acids, Unsaturated / Q000096:biosynthesis*; D007150:Immunohistochemistry; D007605:Juvenile Hormones / Q000096:biosynthesis*; D009479:Neuropeptides / Q000494:pharmacology*
chemical_list: D005231:Fatty Acids, Unsaturated; D007605:Juvenile Hormones; D009479:Neuropeptides; C032429:methyl farnesoate; C076523:allatostatin