Identification of potential ta-siRNA transcripts. Four unigenes were found to have two miRNA target sites each. For each unigene, the region delimited by the two miRNA suites was used as a BLAST query against the sRNA data set and only c15d_05-D02-M13R_c generated hits. Unigenes are represented by black horizontal lines. The miRNA site boundaries are represented by vertical arrows. Potential ta-siRNAs are represented in the inset by colored short horizontal lines mapped onto the unigene.