Classification of repeats detected in Miscanthus × giganteus ( Mxg ) and sorghum by sequence comparison to the Plant Repeat Database. Sequence surveys of Mxg and sorghum were matched to the Plant Repeat Database by nucleotide BLAST search. The proportion of repeats in each class for these two genomes was estimated by comparing the percentage of reads matching repeats of different classes in the database. (a) Proportion of repeats from surveys of the two species matching general classes of plant repetitive sequence. In both Mxg and sorghum, retrotransposons are the predominant class of repeats. Transposons are class II (DNA) transposons according to the designations in the Plant Repeat Database. (b) Further classification into repeat subfamilies, showing differing levels of miniature inverted repeat transposable element (MITE) and transposable element families in the two species. LINE, long interspersed nuclear element; SINE, short interspersed nuclear element.