Fig. 2From: Genome-wide analysis of the potato Hsp20 gene family: identification, genomic organization and expression profiles in response to heat stressPhylogenetic tree of Hsp20s from Arabidopsis, Populus, soybean, rice and potatoThe phylogenetic tree was constructed using the NJ (Neighbor-joining) method with 1000 bootstrap replications. The 12 subfamilies were distinguished in different colors, and the unclassified StHsp20s were colored in purpleBack to article page