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Molecular mechanism of diapause in insect (I)

Expression of diapause hormone gene and incubation temperature in embryonic stage ofBombyx mori

Science in China Series C: Life Sciences volume 41, pages 344–350 (1998)Cite this article

Abstract

The embryonic diapause of the silkworn,Bombyx mori, is induced by the diapause hormone (DH) which is secreted from the suboesophageal ganglion of pupae. The diapause nature of bivoltine strains uses environmental stimuli as the initial signal to determine the diapause nature. The experiments showed that DH gene expreon is a direct response to the environmend stimulus, such as high incubation temperature. The cDNA from the embryonic stage wa cloned and sequenm analysis showed the cDNA encoding DH. Expmion patterns of the DH gene in embryonic stage are different ar incubation temperatures 15°C and 25°C, suggesting that the incubation tempcreturt as an environmental signal is kept within the body to control the DH gene expmion at the pupal stage, so that the embryonic diapause of next generation can be determined.

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Affiliations

  1. Department of Biolcgy, University of Science and Technology of China, 230026, Hefei, China

    Weihua Xu, Yuanqi Zhang, Ying Wang, Lili Ding & Jing Liu

Authors
  1. Weihua Xu
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  2. Yuanqi Zhang
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  3. Ying Wang
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  4. Lili Ding
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  5. Jing Liu
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Xu, W., Zhang, Y., Wang, Y. et al. Molecular mechanism of diapause in insect (I). Sci. China Ser. C.-Life Sci. 41, 344–350 (1998). https://doi.org/10.1007/BF02882732

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  • DOI: https://doi.org/10.1007/BF02882732

Keywords

  • diapause
  • diapause hormone
  • incubation temperature
  • gene expression
  • embryogenesis
  • Bombyx mori