Fig. 2

Proposed model for the secondary wall biosynthesis of ramie fibers. In total, 46 candidate proteins were classified into five functional categories, including transcriptional regulation, lignin, cellulose, and hemicellulose biosynthesis, as well as secondary wall deposition. The box to the left of the arrows in each block indicates the family of candidate proteins. The heatmap in each block represents the expression difference of candidate proteins belonging to corresponding functional categories. The full name of the enzyme in each box can be found in the Additional file 1: Table S3