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The complete chloroplast genome of Heteromorpha arborescens (Apiaceae).

ABSTRACT: Heteromorpha arborescens has long been recognized and cultivated as an important medicinal plant. We reported its complete plastid genome for the first time and reconstructed its phylogenetic position. The complete plastid genome was 157,172 bp in length with a typical quadripartite organization: a large single-copy (LSC) region of 86,436 bp, a small single-copy (SSC) region of 18,222 bp, and two inverted repeat regions (IRa and IRb), each of 26,257 bp. A total of 130 functional genes were recovered, consisting of 85 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The phylogenetic analysis suggested that H. arborescens is sister to other species except Cetella arborescens in Apiaceae with strong ultrafast support.

SUBMITTER: Li H

PROVIDER: S-EPMC7781938 | biostudies-literature |

REPOSITORIES: biostudies-literature

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The complete chloroplast genome of Torilis scabra (Apiaceae).

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Complete chloroplast genome of Angelica hirsutiflora Liu et al. 1961 (Apiaceae).

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The complete chloroplast genome sequence of the medicinal plant, Angelica gigas (Apiaceae).

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Chloroplast genome analyses of Caragana arborescens and Caragana opulens.

Project description:BackgroundNumerous species within the genus Caragana have high ecological and medicinal value. However, species identification based on morphological characteristics is quite complicated in the genus. To address this issue, we analyzed complete plastid genome data for the genus.ResultsWe obtained chloroplast genomes of two species, Caragana arborescens and Caragana opulens, using Illumina sequencing technology, with lengths of 129,473 bp and 132,815 bp, respectively. The absence of inverted repeat sequences in the two species indicated that they could be assigned to the inverted repeat-lacking clade (IRLC). The genomes included 111 distinct genes (4 rRNA genes, 31 tRNA genes, and 76 protein-coding genes). In addition, 16 genes containing introns were identified in the two genomes, the majority of which contained a single intron. Repeat analyses revealed 129 and 229 repeats in C. arborescens and C. opulens, respectively. C. arborescens and C. opulens genomes contained 277 and 265 simple sequence repeats, respectively. The two Caragana species exhibited similar codon usage patterns. rpl20-clpP, rps19-rpl2, and rpl23-ycf2 showed the highest nucleotide diversity (pi). In an analysis of sequence divergence, certain intergenic regions (matK-rbcL, psbM-petN, atpA-psbI, petA-psbL, psbE-petL, and rps7-rps12) were highly variable. A phylogenetic analysis showed that C. arborescens and C. opulens were related and clustered together with four other Caragana species. The genera Astragalus and Caragana were relatively closely related.ConclusionsThe present study provides valuable information about the chloroplast genomes of C. arborescens and C. opulens and lays a foundation for future phylogenetic research and molecular marker development.

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The complete chloroplast genome sequence of Sinolimprichtia alpina var. dissecta (Apiaceae).

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