Gene co-expression networks of cassava root development in wet and dry growing seasons.

<p>(<b>a</b>) C-Dry: cortex-dry, (<b>b</b>) P-Dry: parenchyma-dry, (<b>c</b>) C-Wet: cortex-wet, (<b>d</b>) P-Wet: parenchyma-wet. The networks were comprised of 23 genes that showed significant expression under each growth condition. The highlighted nodes and edges (blue: positive relationship and red: negative relationship) represent the active gene and gene association, presumably functioning under the certain condition. (<b>e</b>) and (<b>f</b>) demonstrates the comparison of associated gene pairs between the two seasonal crops in root cortex and parenchyma tissues, respectively. The abbreviation code of a gene in the co-expression network could be found in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0137602#pone.0137602.s003" target="_blank">S2 File</a>.