Complete Chloroplast Genome of : Comparative and Phylogenetic Analysis.

is a dominant desert shrub in Xinjiang, China, with high economic and ecological value. However, molecular systematics research on is lacking. To resolve the genetic composition of within Amaranthaceae and its systematic relationship with related genera, we used a second-generation Illumina sequencing system to detect the chloroplast genome of and analyze its assembly, annotation, and phylogenetics. Total length of the chloroplast genome of reached 152,287 bp, with 84 protein-coding genes, 36 tRNAs, and eight rRNAs. Codon usage analysis showed the majority of codons ending with base A/U. Mononucleotide repeats were the most common (85.42%) of the four identified simple sequence repeats. A comparison with chloroplast genomes of six other Amaranthaceae species indicated contraction and expansion of the inverted repeat boundary region in , with some genes (, , ) differing in length and distribution. Among the seven species, the variation in non-coding regions was greater. Phylogenetic analysis revealed , , , and to have a close monophyletic relationship. By sequencing the chloroplast genome, this research resolves the relatedness among 35 Amaranthaceae species, providing molecular insights for germplasm utilization, and theoretical support for studying evolutionary relationships.