Figure 2From: Deep-sequencing transcriptome analysis of low temperature perception in a desert tree, Populus euphraticaCOG functional classification of the P. euphratica transcriptome. 49,291 unigenes with significant homologies in the COG database (E-value < 1.0 E-5) were classified into 25 COG categories. The capital letters in x-axis indicates the COG categories as listed on the right of the histogram, and the y-axis indicates the number of unigenes.Back to article page