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The complete chloroplast genome of Melicope pteleifolia (Champ. ex Benth.) T. G. Hartley (Rutaceae).

ABSTRACT: Melicope pteleifolia, an important medicinal and horticultural plant, has antipyretic, anti-inflammatory, and analgesic effects. Here, the complete chloroplast genome of M. pteleifolia was sequenced and its phylogenetic relationship was investigated. The complete chloroplast genome of M. pteleifolia was 159,014 bp in size, including a pair of inverted repeat regions (IR, 27,640 bp), a large single copy region (LSC, 85,124 bp), and a small single copy region (SSC, 18,610 bp). The GC content of the chloroplast genome was 38.3%. A total of 133 genes were annotated, including 88 protein-coding genes, 8 rRNA genes, and 37 tRNA genes. Phylogenetic analysis revealed that M. pteleifolia clusters together with species of Toddalia, Zanthoxylum, Tetradium, Phellodendron, and Casimiroa.

SUBMITTER: Wu Z

PROVIDER: S-EPMC8023594 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Recently, the systematic status of Fortunella Swingle and its taxonomy has attracted much attention. Flora of China incorporates Fortunella into Citrus Linn. and treats all species of the traditional Fortunella as one species, namely Citrus japonica (Thunb.) Swingle. Furthermore, F. venosa (Champ. ex Benth.) C. C. Huang and F. hindsii (Champ. ex Benth.) Swingle are currently considered as synonyms of C. japonica. In this paper, morphological, palynological, and phylogenetic analyses were used to systematically explore the taxonomic status of traditional Fortunella. The key morphological features that differed among the Fortunella species were the leaf and the petiole hence could be key in its taxonomic classification of the species. Additionally, pollen morphological analysis based on the pollen size, germination grooves, polar, and equatorial axes also supported the separation of the species. The results of the phylogenetic analysis showed that each of the three species clustered separately, hence strongly supporting the conclusion of independent species. In addition, the phylogenetic analysis showed that the two genera clustered closely together hence our results support the incorporation of Fortunella into Citrus. Based on the above, this article has revised the classification of the traditional Fortunella and determined that this genus has three species, namely; F. venosa, F. hindsii, and F. japonica. F. venosa and F. hindsii are placed in the Citrus as separate species, and their species names still use the previous specific epithet. The revised scientific names of the new combinations of F. venosa and F. hindsii are as follows: Citrus venosa (Champ. ex Benth.) K. M. Liu, X. Z. Cai, and G. W. Hu, comb. nov. and Citrus hindsii (Champ. ex Benth.) K. M. Liu, G. W. Hu, and X. Z. Cai, comb. nov. F. venosa is the original species of Fortunella, F. venosa and F. hindsii are both listed as the second-class key protected wild plants in China. Therefore, the establishment of the taxonomic status of F. venosa and F. hindsii not only deepens our understanding, importance, and the complexity of the systematic classification of Fortunella, but is also significant for global biodiversity conservation, genetic resources for breeding purposes, and population genetics.

Dataset Information

The complete chloroplast genome of Melicope pteleifolia (Champ. ex Benth.) T. G. Hartley (Rutaceae).

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