Abstract

Abstract: The cDNA sequence of a small heat shock protein (hsp19.7) was cloned and sequenced from the rice stem borer, Chilo suppressalis Walker. The cDNA encoded a protein of 177 amino acids with a calculated molecular weight of 19.7 kDa. The deduced amino acid sequence showed the highest identity of 90% to Bombyx morihsp19.9. Expression levels of hsp19.7 were similar between diapausing and non‐diapausing larvae. In non‐diapausing larvae, but not in diapausing ones, hsp19.7 expression was upregulated by cold acclimation. Involvement of hsp19.7 in larval diapause and cold tolerance in C. suppressalis is discussed.

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