Results: In this study, de novo transcriptome assembly and gene expression analysis were performed using Illumina
sequencing technology. A total of 52.6 million 90-bp paired-end reads were generated from two libraries
constructed at the initial stage and fast oil accumulation stage of seed development. These reads were assembled
into 70,392 unigenes; 22,179 unigenes showed a 2-fold or greater expression difference between the two libraries.
Using this data we identified unigenes that may be involved in de novo FA and triacylglycerol biosynthesis. In
particular, a number of unigenes encoding desaturase for formation of unsaturated fatty acids with high expression
levels in the fast oil accumulation stage compared with the initial stage of seed development were identified.