Author contributions
S.L.C., H.R.L and C.H.Z. conceived the project. S.L.C. and C.H.Z.
managed the project. Q.Z., H.X. and C.X.T. collected the sequencing
samples. X.Y.G. extracted the genomic DNA and performed the genome
sequencing. Q.Z., G.H and Y. H. analyzed the data. Q.Z. wrote the
manuscript. All authors reviewed and approved the final manuscript.