Figure 3.

Differential expression of MADS-box transcription factors during early inflorescence development in wheat. Wheat MADS-box genes are named following the nomenclature of their closest rice homolog (Supplemental Table S4) and were classified according to Arora et al. (2007). The suffix numbers are serial numbers of homeologs similar to the same rice gene (for details, see Supplemental Table S4). Note the expression patterns of MADS-box genes, such as the SVP-like genes (STMADS11-like) are specifically expressed in the DR phase, while the expression of others gradually increased during wheat inflorescence and floral organ development (AGL2, AQUA, DEF, GLO, AG, and AGL6-like). The heatmap was generated using the R package pheatmap, where the numbers represent relative expression levels of genes normalized across the four developmental stages. Clustering was performed using Pearson correlation distance.