Fig. 5

The qRT-PCR and co-expression network analysis of fiber-related GhNAC genes. a Expression analysis of the selected GhNAC genes in fiber development by qRT-PCR. The GhUBQ7 (GenBank accession number: DQ116441) was used as the internal control to calculate and normalize the expression levels. Bars represent means ± standard error (n = 3). The orange lines represent the transcriptome data (FPKM). b The co-expression network with gene expression view of GhNAC genes in fiber development. The gray lines between two nodes indicate co-expression relationships. The purple solid circles represent overlapped genes. c GO enrichment analysis of co-expression genes with GhNAC33, GhNAC125, GhNAC193, GhNAC280