Diversity of LEA-like proteins and its mRNA expression in the sleeping chironomid(Papers presented at the Seminar, "NIAS International Seminar for Cryobiology and Cryotechnology")

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  • GUSEV Oleg
    Anhydrobiosis Research Group, National Institute of Agrobiological Sciences:Institute of Biology and Fundamental Medicine, Kazan Federal University
  • HATANAKA Rie
    Anhydrobiosis Research Group, National Institute of Agrobiological Sciences
  • CORNETTE Richard
    Anhydrobiosis Research Group, National Institute of Agrobiological Sciences
  • KIKAWADA Takahiro
    Anhydrobiosis Research Group, National Institute of Agrobiological Sciences

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  • Diversity of LEA-like proteins and its mRNA expression in the sleeping chironomid

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Unique ability of larvae of the sleeping chironomid Polypedilum vanderplanki to resist complete desiccation largely relies on activity of LEA proteins. Using genome-wide analysis of the insect's mRNA diversity and expression, in addition to initially described three LEA proteins we have identified 37 new LEA-like protein-coding genes. We have demonstrated that while all genes were up-regulated in response to desiccation, other abiotic stresses, such as ionizing radiation and heat also altered Lea-like genes expression. We further found that expression of the Lea-like genes is not limited to the larvae exposed to desiccation and can be detected both in the unstressed larvae as well as in other (desiccation-sensitive) developmental stages of the chironomid.

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