This sstudy examined differences in heat tolerance in tow populations of the ciliete carchesium polypinum. carchesium polypinum populations in Wuhan (WH strain) had higher thermal tolerance than those in Xi' an (XA strain) based on measurements of the threshold temperature under which the zooid (body having normal shape) transferred to the telitroch (body gone from the stalk and presented global shape under abominable conditions) was higher in the WH strain (36 degrees C) than in XA strain (33 degrees C). Real-time PCR results showed that the WH strain bad a higher threshold temperature for inducing high Hsp70 mRNA (33 degrees C) than did the XA strain 928 degrees C). The correlation between the threshold temperature for Hsp70 mRNA and the thermal tolerance was positive in C. polypinum.
Li-Fang, Feng; Wei, Miao (firstname.lastname@example.org).Comparative analysis of the Hsp70 mRNA expression and heat tolerance in two regional Carchesium polypinum at different latitudes,Acta Zoologica Sinica,2008,54(3):525-530