Characterization of the complete chloroplast genome of Cycas panzhihuaensis

Abstract

The whole chloroplast (cp) genome sequence of Cycas panzhihuaensis has been characterized from Illumina pair-end sequencing. The complete cp genome was 162,470 bp in length, containing a large single copy region (LSC) of 88,932 bp and a small single copy region (SSC) of 23,448 bp, which were separated by a pair of 25,045 bp inverted repeat regions (IRs). The genome contained 156 genes, including 109 protein-coding genes (98 PCG species), 39 tRNA genes (32 tRNA species) and eight ribosomal RNA genes (four rRNA species). The most of gene species occur as a single copy, while 22 gene species occur in double copies. The overall AT content of C. panzhihuaensis cp genome is 60.6 %, while the corresponding values of the LSC, SSC and IR regions are 61.3, 63.5 and 58.0 %, respectively. Further, phylogenetic analysis suggested that C. panzhihuaensis is closely related to the species of C. revoluta.