Repetitive content on representative core (Chromosome 8) and dispensable (Chr. 14) chromosomes of Mycosphaerella graminicola . Repetitive sequences in the M. graminicola genome were identified using four repeat-finding methods: RepeatMasker (RM), RECON, RepeatScout and TALLYMER. In addition to the default RepBase Update repeat library, two custom repeat libraries were used with RM. These custom repeat libraries contained repetitive elements identified by RECON and RepeatScout. Percent GC content was plotted for each chromosome. A sharp decrease in percent GC content coincides with the occurrence of repetitive sequences on both chromosomes. Different methods can be compared for repeat coverage on both chromosomes. RM-RepBase Update library (yellow bars) had the poorest coverage of repeats. The RM-RECON library (blue bars) performed better than RECON (green bars) alone. RepeatScout output is not shown here. The performance of TALLYMER (bottom red bars) was equivalent or better than that of the RM-RECON combination. Predicted genes are indicated by red bars.