• Changes in protein, glycogen, free sugar content and active phosphorylase activity during embryogenesis ofPhilosamia ricini

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/secb/080/03/0121-0126

    • Keywords

       

      Free Sugar; Yolk Reserve; Free Sugar Content; Acta EmbryoL; Philosamia Ricini

    • Abstract

       

      Immediately after fertilization of the ovum, vigorous cell proliferation commences at the expense of the yolk reserves. The high titre of glycogen, observed both during the initial as well as the final stages of embryogenesis, suggests glycogen to be the main energy reserve which in combination with protein also participates in the chitinization of the newly hatched out larva. The close resemblance in the variation pattern of free sugar content to that of active phosphorylase activity is noteworthy.

      The initial total protein concentration inPhilosamia egg (165µg/egg) although declines during early embryonic development, rises again to 149µg/egg on day 6 on the eve of emergence of the first instar larva depicting intensive tissue transformation during the tail end of embryogenesis.

    • Author Affiliations

       

      Radha Pant1 Girish Chandra Nautiyal1

      1. Biochemistry Department, The University, Allahabad
    • Dates

       
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