Coexpression network of
Populus. Nodes represent Hsfs and Hsps in Populus, edges indicate pairwise correlation constructed by WGCNA. Node color codes represent different gene families. Red hexagons indicate Hsfs, solid circles with green, orange, blue, and purple indicate sHsps, Hsp60s, Hsp70s, and Hsp100s, respectively. Thin edges indicate moderate coexpressions and thick edges indicate strong coexpressions between the two nodes. The network was created using Cytoscape (see Methods).