Dataset Information

Complete plastome sequences of Diospyros maclurei Merr. and Diospyros hainanensis Merr. (Ebenaceae): two endemic species in Hainan Province, China.

ABSTRACT: Diospyros is the largest genus (about 485 species) in Ebenaceae. It is a deciduous or evergreen tree or shrub. It grows in pantropical and extending into temperate regions. Here, we report and characterize the complete plastid genome sequences of D. maclurei Merr. and D. hainanensis Merr. in an effort to provide genomic resources useful for promoting their systematics research and potential economic development. The complete plastome of D. maclurei is 157,946?bp in length, including two Inverted Repeat (IR) regions of 26,081?bp, a Large Single-Copy (LSC) region of 87,387?bp, and a Small Single-Copy (SSC) region of 18,397?bp. The plastome contains 114 genes, consisting of 80 unique protein-coding genes, 30 unique tRNA genes, and four unique rRNA genes. The overall A/T content in the plastome of D. maclurei is 62.60%. The complete plastome of D. hainanensis is 157,999?bp in length, including two Inverted Repeat (IR) regions of 26,077?bp, a Large Single-Copy (LSC) region of 87,523?bp, and a Small Single-Copy (SSC) region of 18,322?bp. The plastome contains 114 genes, consisting of 80 unique protein-coding genes, 30 unique tRNA genes, and four unique rRNA genes. The overall A/T content in the plastome of D. hainanensis is 62.60%. The complete plastome sequences of D. Maclurei and D. hainanensis will provide a useful resource for the conservation genetics of the two species as well as for the phylogenetic studies of Diospyros.

SUBMITTER: Liu WW

PROVIDER: S-EPMC7799653 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Publications

Complete plastome sequences of Diospyros maclurei Merr. and Diospyros hainanensis Merr. (Ebenaceae): two endemic species in Hainan Province, China.

Liu Wen-Wen WW Tan Xin-Hang XH Zhao Kun-Kun KK Zhu Zhi-Xin ZX Wang Hua-Feng HF

Mitochondrial DNA. Part B, Resources 20181030 2

Diospyros is the largest genus (about 485 species) in Ebenaceae. It is a deciduous or evergreen tree or shrub. It grows in pantropical and extending into temperate regions. Here, we report and characterize the complete plastid genome sequences of D. maclurei Merr. and D. hainanensis Merr. in an effort to provide genomic resources useful for promoting their systematics research and potential economic development. The complete plastome of D. maclurei is 157,946 bp in le ...[more]

PMID: 33474466

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Project description:BACKGROUND: Radiation in some plant groups has occurred on islands and due to the characteristic rapid pace of phenotypic evolution, standard molecular markers often provide insufficient variation for phylogenetic reconstruction. To resolve relationships within a clade of 21 closely related New Caledonian Diospyros species and evaluate species boundaries we analysed genome-wide DNA variation via amplified fragment length polymorphisms (AFLP). RESULTS: A neighbour-joining (NJ) dendrogram based on Dice distances shows all species except D. minimifolia, D. parviflora and D. vieillardii to form unique clusters of genetically similar accessions. However, there was little variation between these species clusters, resulting in unresolved species relationships and a star-like general NJ topology. Correspondingly, analyses of molecular variance showed more variation within species than between them. A Bayesian analysis with BEAST produced a similar result. Another Bayesian method, this time a clustering method, Structure, demonstrated the presence of two groups, highly congruent with those observed in a principal coordinate analysis (PCO). Molecular divergence between the two groups is low and does not correspond to any hypothesised taxonomic, ecological or geographical patterns. CONCLUSIONS: We hypothesise that such a pattern could have been produced by rapid and complex evolution involving a widespread progenitor for which an initial split into two groups was followed by subsequent fragmentation into many diverging populations, which was followed by range expansion of then divergent entities. Overall, this process resulted in an opportunistic pattern of phenotypic diversification. The time since divergence was probably insufficient for some species to become genetically well-differentiated, resulting in progenitor/derivative relationships being exhibited in a few cases. In other cases, our analyses may have revealed evidence for the existence of cryptic species, for which more study of morphology and ecology are now required.

Dataset Information

Complete plastome sequences of Diospyros maclurei Merr. and Diospyros hainanensis Merr. (Ebenaceae): two endemic species in Hainan Province, China.

Publications

Complete plastome sequences of <i>Diospyros maclurei</i> Merr. and <i>Diospyros hainanensis</i> Merr. (Ebenaceae): two endemic species in Hainan Province, China.

Similar Datasets

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