Complete analysis and phylogenetic analysis of Polygonatum sibiricum mitochondria.

In this project, we studied the complete mitogenome of the liliaceae medicinal plant Polygonatum sibiricum. The genome is represented by a circular ring molecule with a length of 691,910 bp and a GC content of 46.33%. Mitochondrial genome composition is slightly biased towards A+T, with AT accounting for 53.67%, and AT skewness slightly positive (0.092%). The complete mitogenome has a total of sixty-three unique genes, including thirty-nine protein-coding genes, twenty-one transfer RNAs (tRNAs) and three ribosomal RNAs (rRNAs). We examined codon use, repeat sequence, RNA editing in the mitogenome of P. sibiricum, and elucidated species classification based on phylogenetic trees of mitogenome of twenty-three species. Our results provide comprehensive information on the mitogenome of P. sibiricum and show for the first time the evolutionary relationship between the mitogenome of P. sibiricum and Chlorophytum comosum in the Asparagales family.