Complete chloroplast genome sequence and phylogenetic analysis of Torenia fournieri.
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ABSTRACT:
SUBMITTER: Chen G
PROVIDER: S-EPMC8204956 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:Syzygium malaccense is native to Malaysia. It is sometimes called the malay apple, malay rose-apple, mountain rose-apple, mountain apple, water apple, or French cashew. The tree is very popular in many tropical and subtropical regions for its fruit and traditional medicine. The first complete chloroplast genome of Syzygium malaccense has been reported in this study. The complete chloroplast genome of Syzygium malaccense is 158,954 bp, composed of four regions: a large single-copy region with a size of 87,991 bp, a small single copy region with a size of 18,793 bp, and two inverted repeat regions with a size of 26,085 bp. The GC content is 36.97%. A total of 132 genes were annotated, including 84 encoding proteins, eight encoding rRNA genes, 37 encoding tRNA genes, and three encoding pseudo genes. Phylogenetic analysis showed that Syzygium aromaticum, Syzygium cumini, and Syzygium forrestii are closely related to Syzygium malaccense.
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Project description:Fagopyrum dibotrys, belongs to Polygonaceae family, is one of national key conserved wild plants of China with important medicinal and economic values. Here, the complete chloroplast (cp) genome sequence of F. dibotrys is reported. The cp genome size is 159,919?bp with a typical quadripartite structure and consisting of a pair of inverted repeat regions (30,738?bp) separated by large single copy region (85,134?bp) and small single copy region (13,309?bp). Sequencing analyses indicated that the cp genome encodes 131 genes, including 80 protein-coding genes, 28 tRNA genes and 4 rRNA genes. The genome structure, gene order and codon usage are typical of angiosperm cp genomes. We also identified 48 simple sequence repeats (SSR) loci, fewer of them are distributed in the protein-coding sequences compared to the noncoding regions. Comparison of F. dibotrys cp genome to other Polygonaceae cp genomes indicated the inverted repeats (IRs) and coding regions were more conserved than single copy and noncoding regions, and several variation hotspots were detected. Coding gene sequence divergence analyses indicated that five genes (ndhK, petL rpoC2, ycf1, ycf2) were subject to positive selection. Phylogenetic analysis among 42 species based on cp genomes and 50 protein-coding genes indicated a close relationship between F. dibotrys and F. tataricum. In summary, the complete cp genome sequence of F. dibotrys reported in this study will provide useful plastid genomic resources for population genetics and pave the way for resolving phylogenetic relationships of order Caryophyllales.
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