Fig. 3

Differentially expressed unigenes in each sample. a Venn diagram of differentially expressed unigenes distributed in every sample. The time was represented the sample that were treated under cold stress. The expression pattern and the statistics of the differentially expressed genes in every pairwise comparison. b The up-regulated and down-regulated DEGs in every pairwise comparison. Taken pairwise comparison of 2 h vs 0 h as an example, up-regulated was referred to the expression was higher than that after 2 h of cold stress treatment while down-regulated referred to the expression was lower than that after 2 h of cold stress treatment. c The expression profile of all the 5800 DEGs during the cold stress. According to their expression pattern, all of them could be divided into 8 groups by using the Mev 4.0 software