β-amylase 3 is the most frequently connected gene (a hub gene). (a) The node degree distribution of starch and TF genes in the gene association network. The gene with the highest degree of connection is β-amylase 3 (b-AMY3: At4g17090) as indicated by a black arrow. (b) Sub-network of the most-connected node (a hub gene), β-amylase 3 at Q < 0.05. A pink rectangle represents a TF gene; an orange diamond represents a clock gene; a green circle represents a starch gene; a black solid line represents an association with positive correlation; and a blue broken line represents an association with negative correlation.
Ingkasuwan et al. BMC Systems Biology 2012 6:100 doi:10.1186/1752-0509-6-100