Plastome structure and phylogenetic relationships of Styracaceae (Ericales)

Abstract Background The Styracaceae are a woody, dicotyledonous family containing 12 genera and an estimated 160 species. Recent studies have shown that Styrax Sinojackia monophyletic, Alniphyllum Bruinsmia cluster into clade with approximately 20-kb inversion in the Large Single-Copy (LSC) region. Halesia Pterostyrax not supported as while Melliodendron Changiostyrax always form sister clades. Perkinsiodendron newly established of Styracaceae. However, phylogenetic relationship at generic level needs further research. Results We collected 28 complete plastomes Styracaceae, including sequences reported here 16 publicly available sequences, comprising 11 All species possessed typical quadripartite structure angiosperm plastomes, sequence differences being minor, except for large (14 genes) found . Seven coding ( rps4 , rpl23 accD rpoC1 psaA rpoA ndhH ) were identified to possess positively selected sites. Phylogenetic reconstructions based on seven data sets (i.e., LSC, SSC, IR, Coding, Non-coding, combination LSC + SSC concatenation one IR) produced similar topologies. In our analyses, all strongly monophyletic. was remaining genera. clade. diptera does Rehderodendron is Conclusion Overall, results demonstrate power plastid phylogenomics improving estimates relationships among This study also provides insight plastome evolution across