LAUSR

Larix potaninii var. macrocarpa Y. W. Law. belongs to the genus Larix within family Pinaceae, is an endangered conifer species endemic to western China. In this study, the complete plastid genome sequence of L. potaninii var. macrocarpa was characterized using next generation Illumina pair-end sequencing data. The chloroplast DNA is 122,642 bp in length, and contains a pair of 436 bp inverted repeat (IR) region, one large single copy (LSC) region of 65,733 bp, and one small single copy (SSC) region of 56,037 bp. The genome contains 110 genes, including 72 protein-coding genes (72 PCG species), 4 ribosomal RNA genes (4 RNA species) and 34 transfer RNA genes (33 tRNA species). The overall G+C content of the whole genome is 38.8%, and the corresponding values of the LSC, SSC and IR regions are 38.0, 39.7 and 37.4%, respectively. Phylogenetic analysis based on 36 chloroplast genomes indicated that L. potaninii var. macrocarpa is closely related to L. potaninii var. chinensis.