Identification and Characterization of Hsp70 from Lactuca sativa

Heat shock proteins (Hsp) were usually regarded as chaperones and play important role in plant stress tolerance. The expression of Hsps would be inducted when plant encounter lots of environmental stressors. Lactuca sativa was an important leaf vegetable in the world, but thermol stress seriously restricted its production. In this study, we isolated the Hsp70 members from Lactuca sativa database, a total of 5 Hsp70 members with completed open reading frame (ORF) were selected and further analysized. Results showed that the 5 LsHsp70 members were closely to Hsp70s in Arabidopsis, which indicated that the identified Hsp70 may responsible for thermotolerance in Lactuca sativa. The 5 new Hsp70s would be used as candidated genes for improving the tolerance trait of Lactuca sativa and others plants.