design: High-molecular-weight genomic DNA was extracted using a modified CTAB method. The SMRTbell library was constructed using the SMRTbell Express Template Prep kit 2.0 (Pacific Biosciences) following the manufacturer's protocol. SMRT sequencing was performed on the Sequel II System in the circular consensus sequencing (CCS) mode. HiFi reads were generated using DeepConsensus (v1.2.0) with default options.