Abstract
The complete nucleotide sequence of Bunge’s pine Pinus bungeana Zucc. ex Endl. chloroplast genome (cp DNA) was determined in this study. The cpDNA was 117 861 bp in length, containing a pair of 475 bp inverted repeat regions (IRa and IRb), which were separated by large and small single copy regions (LSC and SSC) of 65 373 and 51 538 bp, respectively. The cpDNA contained 111 genes, including 71 protein-coding genes (71 PCG species), 4 ribosomal RNA genes (4 rRNA species) and 36 tRNA genes (32 tRNA species). In these genes, 13 harbored a single intron and 1 (ycf3) contained a couple of introns. The overall AT content of Bunge’s pine cpDNA is 61.2%, while the corresponding values of the LSC, SSC and IR regions are 61.9%, 60.2% and 62.5%, respectively. A phylogenetic reconstruction based on the maximum parsimony analysis suggested that all the sampled Pinus species clustered a monophyletic clade and have a high bootstrap support, and the cpDNA of P. bungeana is closely related to that of congeneric P. gerardiana.
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