DATA ACCESSIBILITY
GenBank accession numbers of reference sequences for the genes we sequenced are KC928137-KC928228, KC954697 and KF918414-KF918415 (the detailed information could be found in the supplementary Table S2 of He et al (2019), doi: 10.1093/nsr/nwy078). Short-reads generated in this study are deposited in GSA (Genome Sequence Archive) with accession number CRA003253.