Fig. 6

Expression and co-expression network analysis of GhNAC genes under abiotic stress. a The expression patterns of 120 stress-responsive GhNAC genes under abiotic stress. b Venn diagram showing overlap of different stress-responsive GhNAC genes. c The co-expression network of GhNAC genes with DEGs in the abiotic stress treatment. The gray lines between two nodes indicate co-expression relationship. The purple solid circles represent overlapped genes. d The expression of selected GhNAC genes under salt stress (200 mM NaCl) in leaves by qRT-PCR. e The expression of selected GhNAC genes under osmotic stress (15% PEG) in leaves by qRT-PCR. The GhUBQ7 (GenBank accession number: DQ116441) was used as the internal control. Bars represent means ± standard error (n = 3)