Fig. 1

Coordinated contribution of At and Dt subgenomes to G. barbadense fiber development. a The bar plot shows that the number of expressed genes in the At and Dt subgenomes at 0 day post anthesis (DPA), 5 DPA, 10 DPA, and 20 DPA. The expressed genes contain homoeologous genes (orange) and non-homoeologous genes (cyan). b The bar plot shows the number of peaks for different chromatin modifications at four stages. c The circular diagram shows the proportion of differential expression patterns of homoeologous gene pairs in the comparisons of adjacent stages. d Dynamic number of homoeologous genes with expression bias during fiber development. Conserved At bias means that the expression levels of homoeologous genes in the At subgenome were significantly higher (FC ≥ 2 and FDR ≤ 0.05) than those in the Dt subgenome at the four stages. Conserved Dt bias shows the opposite meaning to conserved At bias. Dynamic category represents dynamic changes of the expression bias towards the At or Dt subgenome. Cyan line indicates genes showing Dt bias expression, orange line indicates genes showing At bias expression and gray line indicates genes with no bias expression at 20 DPA. e Heatmap shows the clustering of homoeologous expression patterns into nine groups. The representative GO terms are shown for each group. High expression is shown in red and low expression is shown in green