Figure 3.

Temporal patterns of differentially expressed genes in developing seeds. Glycine max, var. Evans seeds harvested at five time points from early seed fill to maturation were analyzed by Affymetrix microarray. 2,869 of the represented genes were differentially expressed across five time points. The genes fall into 8 clusters based on similar patterns of expression (K-medoids clustering). Genes involved in starch and fatty acid synthesis are grouped in "decreasing" clusters; genes involved in starch degradation and fatty acid β-oxidation are grouped in "increasing" clusters. In addition to the genes encoding metabolic functions, clusters all contained genes of unknown function, including regulatory genes such as putative transcription factors.