The complete chloroplast genome of Juglans cathayensis var. formosana (Hayata), an endemic in China

Abstract

Juglans cathayensis var. formosana (Hayata) is a precious Juglans tree endemic to China. In this study, we reported its complete chloroplast genome assembled from Illumina pair-end sequencing data. The completed plastome was 159,967 bp in length, including a large-single copy (LSC) region of 89,320 bp, a small-single copy (SSC) region of 18,175 bp, and a pair of inverted repeat (IR) regions of 26,236 bp. The overall GC content of the genome was 36.12%, and the corresponding values of the LSC, SSC, and IR regions were 33.71, 29.79, and 42.43%, respectively. A total of 131 genes were annotated, including 87 protein-coding genes, 36 tRNA genes, and 8 rRNA genes. Phylogenetic analysis strongly supported that J. cathayensis var. formosana and J. cathayensis formed a sister clade to J. mandshurica and J. hopeiensis. The newly characterized complete chloroplast genome of J. cathayensis var. formosana will provide essential data for further investigation of this precious species.

Keywords

• juglans cathayensis var. formosana
• chloroplast genome
• sequencing
• phylogenetic analysis