Magnolia omeiensis is an evergreen tree with 25 meters heights. It is distributed in tropical 1200-1300 m. Mount Emei. And it has been ranked as a CR (Critically Endangered) species in China. Here, we report and characterize the complete plastome of M. omeiensis in an effort to provide genomic resources useful for promoting its systematics research. The plastome of M. omeiensis is found to possess a total length 160,021 bp with the typical quadripartite structure of angiosperms, contains two Inverted Repeats (IRs) of 26,336 bp, a Large Single-Copy (LSC) region of 88,061 bp and a Small Single-Copy (SSC) region of 19,288 bp. The plastome contains 114 genes, consisting of 80 unique protein-coding genes, 30 unique tRNA genes and 4 unique rRNA genes. The overall A/T content in the plastome of M. omeiensis is 60.70%. The phylogenetic analysis indicated that M. omeiensis is close to Magnolia yunnanensis within Magnoliaceae in this study. The complete plastome sequence of M. omeiensis will provide a useful resource for the conservation genetics of this species as well as for the phylogenetic studies of Magnoliaceae.
Keywords: Magnolia omeiensis; Magnoliaceae; genome structure; phylogeny; plastome.
© 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.