Gene expressions of heat shock proteins in bombyx mori egg parasitized by a Parasitoid wasp,Telenomus theophilae

Parasitoid wasps inject their eggs into host along with virulent factors to manipulate hosts physiology and immune system. heat shock proteins (hsps) are as molecular chaperones and stress proteins induced by heat,cold,anoxia and parasitism. there was no report about the roles of hsp in insect eggs against egg parasitoids. here,we studied the expression profiles of several hsps in silkworm eggs after parasitization by telenomus theophilae. the results showed that expressions of hsp19.9,hsp20.1,hsp20.8 or hsp23.7 were significant up-regulated at 24 h post-parasitization,but the expressions of hsp20.4,hsp21.4,hsp70,heat shock cognate protein and hsp90 after 24 h parasitization had no significant difference compared with the control. after 3 h post-prarsitization,the expressions of nine hsps detected in eggs had no significant changes. our results indicated hsps were involved in the host-parasitoid interaction. this helps us to understand the functions of hsp in host against egg parasitoids. copyright 2016 zoological society of pakistan.