CORRELATIONS BETWEEN SALINITY-PERSISTENCE OF CILIATE SPECIES
AND THEIR CONSTITUTIVE HEAT SHOCK PROTEIN OF 70 kDa CONTENTS
A. O. Smurov,1 Yu. I. Podlipaeva,2 S. O. Skarlato,2 A. V. Goodkov 2,*
1 Zoological Institute RAS and 2 Institute of Cytology RAS, St. Petersburg;
e-mail: 1alexsmurov112004@mail.ru,
* pelgood@rambler.ru
Our own studies of alterations in the level of constitutive heat shock protein of 70 kDa family (Hsp70) in
freshwater (Paramecium jenningsi), meta-freshwater (Tetrahymena pyriformis) and euryhaline (P. nephridiatum)
ciliates acclimated to salt-water and fresh-water medium were reviewed. It has been shown that the level of
constitutive Hsp70 content correlates with the salinity-resistance of ciliate species: in P. jenningsi it was lower
in freshwater, than in marine water, in euryhaline P. nephridiatum it was higher in freshwater, than in marine
water, and was more or less stable in T. pyriformis, the ciliate that occupies intermediate position between two
mentioned above species according its salinity-resistance. The ecological importance of constitutive heat shock
protein level is discussed in the context of salinity adaptations studies.
Key words: salinity adaptations, freshwater ciliates, euryhaline ciliates, Tetrahymena pyriformis, Paramecium
nephridiatum, Paramecium jenningsi, constitutive heat shock protein level (Hsp70)
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