• M Krishnan

      Articles written in Journal of Biosciences

    • Nutritional and hormonal effects on storage proteins in the silkworm,Bombyx mori L.

      S Janarthanan S Sankar M Krishnan S Ignacimuthu

      More Details Abstract Fulltext PDF

      Starvation of 48 h old fifth instar larvae depressed storage protein titres initially for 48 h but retained the levels comparable to control thereafter, possibly due to nutrients obtained during the 48 h feeding after fourth ecdysis. After an initial decline ligated larvae accumulated maximum storage proteins in haemolymph. This is because of inhibitory juvenile hormone titre at the basal level besides the appropriate release of 20-hydroxyecdysone from the ectopic source(s). Injection of methoprene (10 Μg/larva) repressed accumulation of storage proteins while 20-hydroxyecdysone (10 Μg/larva) increased the same. P-soyatose injection to starved and ligated larvae accelerated storage protein accumulation in haemolymph, signalling nutrient indispensability for initiation of storage protein synthesis at the appropriate time of last instar development inBombyx mori.

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