Genes, Vol. 15, Pages 546: Complete Chloroplast Genome of Krascheninnikovia ewersmanniana: Comparative and Phylogenetic Analysis

Genes, Vol. 15, Pages 546: Complete Chloroplast Genome of Krascheninnikovia ewersmanniana: Comparative and Phylogenetic Analysis Genes doi: 10.3390/genes15050546 Authors: Peng Wei Youzheng Li Mei Ke Yurong Hou Abudureyimu Aikebaier Zinian Wu Krascheninnikovia ewersmanniana is a dominant desert shrub in Xinjiang, China, with high economic and ecological value. However, molecular systematics research on K. ewersmanniana is lacking. To resolve the genetic composition of K. ewersmanniana within Amaranthaceae and its systematic relationship with related genera, we used a second-generation Illumina sequencing system to detect the chloroplast genome of K. ewersmanniana and analyze its assembly, annotation, and phylogenetics. Total length of the chloroplast genome of K. ewersmanniana 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 K. ewersmanniana, with some genes (rps19, ndhF, ycf1) differing in length and distribution. Among the seven species, the variation in non-coding regions was greater. Phylogenetic analysis revealed Krascheninnikovia ceratoides, Dysphania ambrosioides, Dysphania pumilio, and Dysphania botrys to...
Source: Genes - Category: Genetics & Stem Cells Authors: Tags: Article Source Type: research
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