PHYLOGENY OF JUNCAGINACEAE IN CHINA BASED ON COMPLETE CHLOROPLAST GENOME
To investigate the phylogeny of Juncaginaceae and enrich its genetic resources,the complete chloroplast genomes of Triglochin maritima and Triglochin palustris were sequenced,assembled,annotated,and characterized.In addition,the phylogenetic relationships of Juncaginaceae and closely related taxa were reconstructed.The results indi-cate that the chloroplast genomes of Triglochin maritima and Triglochin palustris exhibit circular structure with lengths of 155881 and 155803 bp,respectively,containing 57 and 60 SSRs and all 49 long repetitive sequences.In addition,Both genomes also show a preference for codons ending in A/U.Phylogenetic analysis shows that these two Juncagi-naceae species form a single branch with a significant genetic distance from closely related taxa,diverging from Pota-mogeton,Phyllospadix,Zostera,Halodule,Syringodium,and Ruppia approximately 78.67 million years ago.In conjunction with the distributional habitat differences,this study supports the elevation of Triglochin to family status within Juncaginaceae.This study provides a theoretical foundation for investigating chloroplast genome structure evolution of Juncaginaceae and offers valuable insights for species conservation and scientific utilization of Juncagi-naceae and its related taxa.
JuncaginaceaeChloroplast genomes characteristicsPhylogenyDivergence time
万方数据
维普
