Molecular Structure and Phylogenetic Analyses of the Plastomes of Eight <i>Sorbus</i> Sensu Stricto Species
<i>Sorbus</i> L. is a genus of controversy on its taxonomic concept due to great variations in morphological characteristics. <i>Sorbus</i> sensu stricto species, being monophyletic, are characterized as pinnate leaves. However, phylogenetic relationships of these species are...
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MDPI AG
2022-11-01
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| Series: | Biomolecules |
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| Online Access: | https://www.mdpi.com/2218-273X/12/11/1648 |
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| author | Shu-Dong Zhang Li-Zhen Ling |
| author_facet | Shu-Dong Zhang Li-Zhen Ling |
| author_sort | Shu-Dong Zhang |
| collection | DOAJ |
| description | <i>Sorbus</i> L. is a genus of controversy on its taxonomic concept due to great variations in morphological characteristics. <i>Sorbus</i> sensu stricto species, being monophyletic, are characterized as pinnate leaves. However, phylogenetic relationships of these species are somewhat fluid based on morphological characteristics and genetic markers. In this study, the chloroplast (cp) genomes of eight <i>Sorbus</i> s. str. species were characterized and compared with those of twelve released species in this genus. Our results indicated that the plastomes of the twenty <i>Sorbus</i> species had a conserved quadripartite structure, and 129 annotated genes had the same order and showed a good collinearity. Additionally, numerous SSRs were observed in the cp genome of each <i>Sorbus</i> species; most of the sequence variations appeared in non-coding regions, and four intergenic regions were identified as mutation spots. By contrast, protein-coding genes showed low variations under purifying selection. The phylogenetic and molecular-dating analysis showed that <i>Sorbus</i> was resolved into two major clades, in which <i>S. americana</i> forms one clade originating at 51.78 Ma, and the rest of <i>Sorbus</i> formed another clade, splitting at 36.77 Ma into two sister groups with high support values. These results provide a basis for further studying the phylogenetic relationship and biogeography of <i>Sorbus</i> species. |
| first_indexed | 2024-03-09T19:14:05Z |
| format | Article |
| id | doaj.art-4f8b5b170bf4477faab555f36a367e8b |
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| issn | 2218-273X |
| language | English |
| last_indexed | 2024-03-09T19:14:05Z |
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| spelling | doaj.art-4f8b5b170bf4477faab555f36a367e8b2023-11-24T03:53:59ZengMDPI AGBiomolecules2218-273X2022-11-011211164810.3390/biom12111648Molecular Structure and Phylogenetic Analyses of the Plastomes of Eight <i>Sorbus</i> Sensu Stricto SpeciesShu-Dong Zhang0Li-Zhen Ling1School of Biological Science and Technology, Liupanshui Normal University, Liupanshui 553004, ChinaSchool of Biological Science and Technology, Liupanshui Normal University, Liupanshui 553004, China<i>Sorbus</i> L. is a genus of controversy on its taxonomic concept due to great variations in morphological characteristics. <i>Sorbus</i> sensu stricto species, being monophyletic, are characterized as pinnate leaves. However, phylogenetic relationships of these species are somewhat fluid based on morphological characteristics and genetic markers. In this study, the chloroplast (cp) genomes of eight <i>Sorbus</i> s. str. species were characterized and compared with those of twelve released species in this genus. Our results indicated that the plastomes of the twenty <i>Sorbus</i> species had a conserved quadripartite structure, and 129 annotated genes had the same order and showed a good collinearity. Additionally, numerous SSRs were observed in the cp genome of each <i>Sorbus</i> species; most of the sequence variations appeared in non-coding regions, and four intergenic regions were identified as mutation spots. By contrast, protein-coding genes showed low variations under purifying selection. The phylogenetic and molecular-dating analysis showed that <i>Sorbus</i> was resolved into two major clades, in which <i>S. americana</i> forms one clade originating at 51.78 Ma, and the rest of <i>Sorbus</i> formed another clade, splitting at 36.77 Ma into two sister groups with high support values. These results provide a basis for further studying the phylogenetic relationship and biogeography of <i>Sorbus</i> species.https://www.mdpi.com/2218-273X/12/11/1648<i>Sorbus</i> sensu strictoplastomephylogenetic analysis |
| spellingShingle | Shu-Dong Zhang Li-Zhen Ling Molecular Structure and Phylogenetic Analyses of the Plastomes of Eight <i>Sorbus</i> Sensu Stricto Species Biomolecules <i>Sorbus</i> sensu stricto plastome phylogenetic analysis |
| title | Molecular Structure and Phylogenetic Analyses of the Plastomes of Eight <i>Sorbus</i> Sensu Stricto Species |
| title_full | Molecular Structure and Phylogenetic Analyses of the Plastomes of Eight <i>Sorbus</i> Sensu Stricto Species |
| title_fullStr | Molecular Structure and Phylogenetic Analyses of the Plastomes of Eight <i>Sorbus</i> Sensu Stricto Species |
| title_full_unstemmed | Molecular Structure and Phylogenetic Analyses of the Plastomes of Eight <i>Sorbus</i> Sensu Stricto Species |
| title_short | Molecular Structure and Phylogenetic Analyses of the Plastomes of Eight <i>Sorbus</i> Sensu Stricto Species |
| title_sort | molecular structure and phylogenetic analyses of the plastomes of eight i sorbus i sensu stricto species |
| topic | <i>Sorbus</i> sensu stricto plastome phylogenetic analysis |
| url | https://www.mdpi.com/2218-273X/12/11/1648 |
| work_keys_str_mv | AT shudongzhang molecularstructureandphylogeneticanalysesoftheplastomesofeightisorbusisensustrictospecies AT lizhenling molecularstructureandphylogeneticanalysesoftheplastomesofeightisorbusisensustrictospecies |