Fig. 3

The global difference methylation level between T and C groups on CG site. a Circos images were used to show the different methylation levels between C group (normal midgut) and T group (BmNPV-infected midgut) at the genome-wide scale. Each circle from the outside to the inside depicts: (a) 20 scaffolds of Bombyx mori from the largest to the smallest size distributed in clockwise; (b) the methylation level of T group; (c) difference methylation level between T groups and C group; (d) the methyaltion level of C group. Color scale from green to blue represents DNA methylation level; Color scale from blue to red represents DNA methylation difference between two groups. b Distribution of DNA methylation levels of genes in T and Cgroup. The gene structure is defined by seven different features, denoted by the x-axis. The length of each feature was normalized and divided into equal numbers of bins