Fig. 2.

Protein-protein interaction (PPI) network of differentially expressed proteins under cold stress. The degree (number of neighbors) of nodes is represented by the size of the circle and the interaction with other proteins is represented by edges (lines connecting the nodes). The color of the node represents the betweenness centrality (BC) parameter as indicated on the scale where lawngreen represents low BC and turquoise represents high BC. Crucial proteins in this network are indicated with black arrow