Characterization of the complete plastid genome of Quercus sichourensis

Quercus sichourensis is an endemic species in China, and is critically endangered. The complete plastid genome of Q. sichourensis was generated by Illumina pair-end sequencing in the current study. The whole plastome had a length of 160,681 bp, consisting of two copies of inverted repeat regions (25,835 bp), a large single copy region (90,154 bp) and a small single copy region (18,857 bp). The plastome encoded a total of 134 genes, comprising 86 protein-coding genes (79 PCG species), 40 tRNA genes (33 tRNA species), and 8 rRNA genes (4 rRNA species). The overall GC content of Q. sichourensis plastome is 36.9%. The maximum likelihood phylogenetic analysis based on 30 complete plastomes revealed that Q. sichourensis was strictly related to Quercus edithiae with 100% bootstrap support value.