Dataset Information

Chloroplast genome of critically endangered Cotoneaster wilsonii (Rosaceae) endemic to Ulleung Island, Korea.

ABSTRACT: Cotoneaster wilsonii Nakai is an endangered species endemic to Ulleung Island, Korea. Here we reported the first complete chloroplast gnome sequences of C. wilsonii, which is 159,999?bp in total length with the large single copy (LSC) region of 87,868?bp, the small single copy (SSC) region of 19,335?bp, and two inverted repeat (IR) regions of 26,399?bp. The plastome contains 131 genes, including 84 protein-coding, eight ribosomal RNA, and 37 transfer RNA genes. The overall GC content is 42.6% and those in the LSC, SSC, and IR regions are 34.2, 30.3, and 42.6%, respectively. Phylogenetic analysis of 21 representative plastomes within the family Rosaceae suggests strongly the monophyly of Cotoneaster and C. wilsonii being sister to the clade of Cotoneaster franchetii and Cotoneaster horizontalis.

SUBMITTER: Yang JY

PROVIDER: S-EPMC7707780 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Chloroplast genome of critically endangered Cotoneaster wilsonii (Rosaceae) endemic to Ulleung Island, Korea.

Yang Ji Young JY Pak Jae-Hong JH Kim Seung-Chul SC

Mitochondrial DNA. Part B, Resources 20191108 2

Cotoneaster wilsonii Nakai is an endangered species endemic to Ulleung Island, Korea. Here we reported the first complete chloroplast gnome sequences of C. wilsonii, which is 159,999 bp in total length with the large single copy (LSC) region of 87,868 bp, the small single copy (SSC) region of 19,335 bp, and two inverted repeat (IR) regions of 26,399 bp. The plastome contains 131 genes, including 84 protein-coding, eight ribosomal RNA, and 37 transfer RNA genes. The overall GC conte ...[more]

PMID: 33366238

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Project description:Cotoneaster is a taxonomically and ornamentally important genus in the family Rosaceae; however, phylogenetic relationships among its species are complicated owing to insufficient morphological diagnostic characteristics and hybridization associated with polyploidy and apomixis. In this study, we sequenced the complete plastomes of seven Cotoneaster species (C. dielsianus, C. hebephyllus, C. integerrimus, C. mongolicus, C. multiflorus, C. submultiflorus, and C. tenuipes) and included the available complete plastomes in a phylogenetic analysis to determine the origin of C. wilsonii, which is endemic to Ulleung Island, Korea. Furthermore, based on 15 representative lineages within the genus, we carried out the first comparative analysis of Cotoneaster plastid genomes to gain an insight into their molecular evolution. The plastomes were highly conserved, with sizes ranging from 159,595 bp (C. tenuipes) to 160,016 bp (C. hebephyllus), and had a GC content of 36.6%. The frequency of codon usage showed similar patterns among the 15 Cotoneaster species, and 24 of the 35 protein-coding genes were predicted to undergo RNA editing. Eight of the 76 common protein-coding genes, including ccsA, matK, ndhD, ndhF, ndhK, petA, rbcL, and rpl16, were positively selected, implying their potential roles in adaptation and speciation. Of the 35 protein-coding genes, 24 genes (15 photosynthesis-related, seven self-replications, and three others) were found to harbor RNA editing sites. Furthermore, several mutation hotspots were identified, including trnG-UCC/trnR-UCU/atpA and trnT-UGU/trnL-UAA. Maximum likelihood analysis based on 57 representative plastomes of Cotoneaster and two Heteromeles plastomes as outgroups revealed two major lineages within the genus, which roughly correspond to two subgenera, Chaenopetalum and Cotoneaster. The Ulleung Island endemic, C. wilsonii, shared its most recent common ancestor with two species, C. schantungensis and C. zabelii, suggesting its potential origin from geographically close members of the subgenus Cotoneaster, section Integerrimi.

Dataset Information

Chloroplast genome of critically endangered Cotoneaster wilsonii (Rosaceae) endemic to Ulleung Island, Korea.

Publications

Chloroplast genome of critically endangered <i>Cotoneaster wilsonii</i> (Rosaceae) endemic to Ulleung Island, Korea.

Similar Datasets

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