Methyl farnesoate and juvenile hormone production in embryos of Diploptera punctata in relation to innervation of corpora allata and their sensitivity to allatostatin.
Peptides
; 23(11): 1981-90, 2002 Nov.
Article
em En
| MEDLINE
| ID: mdl-12431736
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.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Neuropeptídeos
/
Baratas
/
Corpora Allata
/
Ácidos Graxos Insaturados
/
Hormônios Juvenis
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article