Author contributions
C.-M.C. H.Z. and Y.L.designed the project and wrote the draft manuscript. G.-G.L., Y.L., J.-T.W., and D.J. contributed to the genome assembly, genome evolution analysis, and structural variants analysis. Y.-S.Z., X.-C.D., H.-L.R., J.-J.L., G.-J.C., and B.-H.C., participated in data analysis and substantively revised the manuscript. The final manuscript has been read and approved by all authors.