Embryonic thermosensitive TRPA1 determines transgenerational diapause phenotype of the silkworm, Bombyx mori.

نویسندگان

  • Azusa Sato
  • Takaaki Sokabe
  • Makiko Kashio
  • Yuji Yasukochi
  • Makoto Tominaga
  • Kunihiro Shiomi
چکیده

In the bivoltine strain of the silkworm, Bombyx mori, embryonic diapause is induced transgenerationally as a maternal effect. Progeny diapause is determined by the environmental temperature during embryonic development of the mother; however, its molecular mechanisms are largely unknown. Here, we show that the Bombyx TRPA1 ortholog (BmTrpA1) acts as a thermosensitive transient receptor potential (TRP) channel that is activated at temperatures above ∼ 21 °C and affects the induction of diapause in progeny. In addition, we show that embryonic RNAi of BmTrpA1 affects diapause hormone release during pupal-adult development. This study identifying a thermosensitive TRP channel that acts as a molecular switch for a relatively long-term predictive adaptive response by inducing an alternative phenotype to seasonal polyphenism is unique.

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عنوان ژورنال:
  • Proceedings of the National Academy of Sciences of the United States of America

دوره 111 13  شماره 

صفحات  -

تاریخ انتشار 2014