GmMYB73 expression. (a) GmMYB73 expression at different stages of developing soybean seeds. Left panel: different stages of soybean seeds; percentages indicate relative seed weight compared to the full-sized seed without desiccation. Right panel: GmMYB73 relative expression in seeds at different stages. (b) GmMYB73 expression in different organs of soybean plants. Stage five pods were used. Three-week-old seedlings were used for harvest of stem, root and leaf. For gene expression in (a) and (b), error bars indicate SD (n = 4). (c) Fatty acid contents in seeds at different developmental stages. Total contents are derived from the content of five individual fatty acids. The values are in dry weight. Error bars indicate SD (n = 4).