Complete plastome sequence of Hydnocarpus hainanensis Merr (Achariaceae): an endemic 'vulnerable' tree in South China.

ABSTRACT: Hydnocarpus hainanensis Merr. is an evergreen tree with a height of 6-12 m and a diameter at breast height of 50?cm. It is distributed in Guangxi, Guizhou, Hainan, South of Yunnan Province of China. Here, we report and characterize the complete plastid genome sequence of H. hainanensis in an effort to provide genomic resources useful for promoting its conservation and systematics research. The plastome of H. hainanensis is found to possess a total length 163,330?bp with the typical quadripartite structure of angiosperms, containing two inverted repeats (IRs) of 26,870?bp, a large single copy (LSC) region of 91,510?bp and a small single copy (SSC) region of 18,080?bp. The plastome contains 111 genes, consisting of 78 unique protein-coding genes (seven of which are duplicated in the IR: rps 12, rps7, ndhB, ycf2, rpl23, rpl2, and rps 19), 29 unique tRNA genes (seven of which are duplicated in the IR, i.e. trnN^GUU , trnR^ACG, trnA^UGC, trnl^GAU, trnV^GAC, trnL^CAA , and trnl^CAU ) and four unique rRNA genes (5S rRNA, 4.55S rRNA, 23S rRNA, and 16S rRNA). The overall A/T content in the plastome of H. hainanensis is 63.70%. The phylogenetic analysis indicated that H. hainanensis is close to Salix rorida within Malpighiales. The complete plastome sequence of H. hainanensis will provide a useful resource for the conservation genetics of the one species as well as for the phylogenetic studies of Achariaceae.

SUBMITTER: Chen CR 

PROVIDER: S-EPMC7800351 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature