Haemolymph factor(S) potentiate the 20-hydroxyecdysone mediated stimulation of acid phosphatase activity in larval fat body of rice moth, corcyra cephalonica -in vitro studies

M. Ashok, Aparna Dutta-Gupta (Ray)

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

In vitro experiments on late-larval stage fat body of Corcyra cephalonica indicate that treatment with 20-hydroxyecdysone (20-HE) alone does not alter the fat body acid phosphatase activity. However, a significant stimulation of fat body enzyme activity by 20-HE is noticeable when the hormone was added to the medium among with haemolymph obtained from the posterior half of the 24 h ligated late-last instar larvae. Haemolymph from the anterior half failed to show any stimulatory effect. The posterior haemolymph loses its stimulatory effect by heat, acid, alkali and enzyme treatments. These results suggest the presence of some factorfs) in larval haemolymph which potentiate the stimulatory effect of 20-HE on the fat body enzyme activity during late-larval development of Corcyra. Furthermore, our co-culture studies reveal that these factors) are synthesis by the hind gut-associated lobular visceral fat body.

Original languageEnglish (US)
Pages (from-to)159-165
Number of pages7
JournalInvertebrate Reproduction and Development
Volume20
Issue number2
DOIs
StatePublished - Nov 1991

Keywords

  • 20-hydroxyecdysone
  • Acid phosphatase
  • Fat body
  • Haemolymph factor

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Developmental Biology

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