Characterization of circRNAs in PTGMS rice a The length distribution of identified circRNAs. b The histogram shows the number of circRNAs identified in each chromosome. c Circos plots shows the distribution of circRNA identified in rice (Oryza sativa) genome and their expression levels. The outmost histogram represents all rice chromosomes. The heat map shows the expression distribution of SP2–1, SP2–2, SP2–3, FP2–1, FP2–2, FP2–3, SP3–1, SP3–2, SP3–3, FP3–1, FP3–2, FP3–3, SP4–1, SP4–2, SP4–3, FP4–1, FP4–2, FP4–3 samples from inside to outside, respectively. d Number of circRNAs produced from one gene (8513 circRNAs from 4948 parental genes).