The complete chloroplast genome of <i>Sinosenecio globigerus</i> (C. C. Chang) B. Nordenstam (Asteraceae)

The genus <i>Sinosenecio</i> B. Nordenstam is a group of perennial or sometimes annual or biennial herbs in the family Asteraceae. Here, we have successfully assembled and characterized the complete chloroplast (cp) genome of <i>S. globigerus</i>, which shows a typical quadratic structure with an overall GC content of 37.4%, comprising a pair of inverted repeat regions (IRs) of 24,848 bp, a large single-copy region (LSC) of 83,379 bp and a small single-copy region (SSC) of 18,180 bp. 133 genes were annotated, including 88 protein-coding genes, 37 tRNA genes and eight rRNA genes. Further nucleotide diversity analysis indicated that three genomic regions (<i>acc</i>D-<i>psa</i>I, <i>trn</i>K-<i>rps</i>16, and <i>ycf</i>1) exhibited sufficient variability and thus could be recommended as valuable barcodes for the delimitation and identification of <i>Sinosenecio</i> species. Phylogenetic reconstruction presented clear interspecific relationships within <i>Sinosenecio</i>, which were supported to some extent by cytology, morphology and geographic distributions. Our study will provide valuable and high-quality genetic information to further elucidate the diversified mechanisms in <i>Sinosenecio</i>.