Dataset Information

The complete chloroplast genome sequence of Ficus beipeiensis (Moraceae), an endemic and endangered plant in China.

ABSTRACT: Ficus beipeiensis S.S.Chang is an evergreen plant of Ficus from the family Moraceae. This is an endangered species endemic to China. In terms of economic value, F. beipeiensis are used as a native plant resource of urban landscaping in Chongqing, China. Here, we sequenced, assembled and annotated the chloroplast (cp) genome of F. beipeiensis, and aim to provide genetic resources for this endangered species. The length of cp genome was 160,595 bp, with a large single-copy region (LSC) of 88,683 bp and a small single-copy region (SSC) of 20,160 bp separated by a pair of inverted repeats (IRs) of 25,876 bp. It encodes 110 unique genes, including 76 protein-coding genes, 30 transfer RNA genes, and 4 ribosomal RNA genes. Besides, we reconstructed the phylogeny of Moraceae based on the whole cp genome sequences data set. Phylogenetic analysis shows that all analyzed Ficus species are clustered and form a monophyletic group. Antiaris is a sister group to Ficus. In our maximum likelihood (ML) tree, F. beipeiensis is closely related to F. racemose.

SUBMITTER: Han F

PROVIDER: S-EPMC7899700 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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The complete chloroplast genome sequence of Ficus beipeiensis (Moraceae), an endemic and endangered plant in China.

Han Fang F Li Jingling J Yuan Jing J Yu Jie J

Mitochondrial DNA. Part B, Resources 20210219 2

Ficus beipeiensis S.S.Chang is an evergreen plant of Ficus from the family Moraceae. This is an endangered species endemic to China. In terms of economic value, F. beipeiensis are used as a native plant resource of urban landscaping in Chongqing, China. Here, we sequenced, assembled and annotated the chloroplast (cp) genome of F. beipeiensis, and aim to provide genetic resources for this endangered species. The length of cp genome was 160,595 bp, with a large single-c ...[more]

PMID: 33659705

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Project description:Dendropanax oligodontus, which belongs to the family Araliaceae, is an endemic and endangered species of Hainan Island, China. It has potential economic and medicinal value owing to the presence of phenylpropanoids, flavonoids, triterpenoids, etc. The analysis of the structure and characteristics of the D. oligodontus chloroplast genome (cpDNA) is crucial for understanding the genetic and phylogenetic evolution of this species. In this study, the cpDNA of D. oligodontus was sequenced for the first time using next-generation sequencing methods, assembled, and annotated. We observed a circular quadripartite structure comprising a large single-copy region (86,440 bp), a small single-copy region (18,075 bp), and a pair of inverted repeat regions (25,944 bp). The total length of the cpDNA was 156,403 bp, and the GC% was 37.99%. We found that the D. oligodontus chloroplast genome comprised 131 genes, with 86 protein-coding genes, 8 rRNA genes, and 37 tRNAs. Furthermore, we identified 26,514 codons, 13 repetitive sequences, and 43 simple sequence repeat sites in the D. oligodontus cpDNA. The most common amino acid encoded was leucine, with a strong A/T preference at the third position of the codon. The prediction of RNA editing sites in the protein-coding genes indicated that RNA editing was observed in 19 genes with a total of 54 editing sites, all of which involved C-to-T transitions. Finally, the cpDNA of 11 species of the family Araliaceae were selected for comparative analysis. The sequences of the untranslated regions and coding regions among 11 species were highly conserved, and minor differences were observed in the length of the inverted repeat regions; therefore, the cpDNAs were relatively stable and consistent among these 11 species. The variable hotspots in the genome included clpP, ycf1, rnK-rps16, rps16-trnQ, atpH-atpI, trnE-trnT, psbM-trnD, ycf3-trnS, and rpl32-trnL, providing valuable molecular markers for species authentication and regions for inferring phylogenetic relationships among them, as well as for evolutionary studies. Evolutionary selection pressure analysis indicated that the atpF gene was strongly subjected to positive environmental selection. Phylogenetic analysis indicated that D. oligodontus and Dendropanax dentiger were the most closely related species within the genus, and D. oligodontus was closely related to the genera Kalopanax and Metapanax in the Araliaceae family. Overall, the cp genomes reported in this study will provide resources for studying the genetic diversity and conservation of the endangered plant D. oligodontus, as well as resolving phylogenetic relationships within the family.

Dataset Information

The complete chloroplast genome sequence of Ficus beipeiensis (Moraceae), an endemic and endangered plant in China.

Publications

The complete chloroplast genome sequence of <i>Ficus beipeiensis</i> (Moraceae), an endemic and endangered plant in China.

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