Fig. 2From: Genomic abundance and transcriptional activity of diverse gypsy and copia long terminal repeat retrotransposons in three wild sunflower speciesGenome abundance and expression level (FPKM) of 40 individual gypsy and 12 individual copia elements in three sunflower species. FPKM ≥1 was used as a cutoff for detectable expression. Error bars represent ±1 SE based on three biological replicates. Numerical and letter designations refer to different sublineages depicted in Additional file 1: Figure S2Back to article page