Figure 3
Fibre synthesis regulatory module in transitions from vegetative to reproductive growth.
(A) The gene expression profiling heatmap clusters 162 differentially expressed TFs into two groups, vegetative (green) and reproductive (orange). Genes are clustered vertically, and tissues are clustered horizontally. A yellow-coloured box represents a gene highly expressed in a tissue, and a dark blue box represents a gene lowly expressed in a tissue. The gene IDs highlighted in green are highly expressed in vegetative tissues, and gene IDs highlighted in orange are highly expressed in reproductive tissues. (B) The table lists the distribution of 162 differentially expressed TFs between the vegetative and reproductive groups. (C) The module describes how KNAT7 regulates fibre and SCW development through binding to the promoter of REV and repressing its transcriptional activity. The co-expression network download clearly displays the repression of Cotton_A_07061 (REV) by the regulation of Cotton_A_28415 (KNAT7) from the vegetative stage to the reproductive stage. A pink line between two nodes indicates a positive co-expression relationship, while a blue line between two nodes indicates a negative co-expression relationship. A green (dark or light green) node indicates a gene highly expressed in vegetative tissues, and an orange (dark or light orange) node indicates a gene highly expressed in reproductive tissues. In addition, the dark green and orange nodes belong to the 162 differential expressed TFs.
