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| DOI | 10.1093/aob/mcae003 |
| ′Out of Africa′ origin of the pantropical staghorn fern genus Platycerium (Polypodiaceae) supported by plastid phylogenomics and biogeographical analysis | |
| 发表日期 | 2024 |
| ISSN | 0305-7364 |
| EISSN | 1095-8290 |
| 起始页码 | 133 |
| 结束页码 | 5-6 |
| 卷号 | 133期号:5-6 |
| 英文摘要 | Background and Aims The staghorn fern genus Platycerium is one of the most commonly grown ornamental ferns, and it evolved to occupy a typical pantropical intercontinental disjunction. However, species-level relationships in the genus have not been well resolved, and the spatiotemporal evolutionary history of the genus also needs to be explored. Methods Plastomes of all the 18 Platycerium species were newly sequenced. Using plastome data, we reconstructed the phylogenetic relationships among Polypodiaceae members with a focus on Platycerium species, and further conducted molecular dating and biogeographical analyses of the genus. Key Results The present analyses yielded a robustly supported phylogenetic hypothesis of Platycerium. Molecular dating results showed that Platycerium split from its sister genus Hovenkampia similar to 35.2 million years ago (Ma) near the Eocene-Oligocene boundary and began to diverge similar to 26.3 Ma during the late Oligocene, while multiple speciation events within Platycerium occurred during the middle to late Miocene. Biogeographical analysis suggested that Platycerium originated in tropical Africa and then dispersed eastward to southeast Asia-Australasia and westward to neotropical areas. Conclusions Our analyses using a plastid phylogenomic approach improved our understanding of the species-level relationships within Platycerium. The global climate changes of both the Late Oligocene Warming and the cooling following the mid-Miocene Climate Optimum may have promoted the speciation of Platycerium, and transoceanic long-distance dispersal is the most plausible explanation for the pantropical distribution of the genus today. Our study investigating the biogeographical history of Platycerium provides a case study not only for the formation of the pantropical intercontinental disjunction of this fern genus but also the ' out of Africa ' origin of plant lineages. |
| 英文关键词 | Epiphytic ferns; global climate change; long-distance dispersal; pantropical disjunction; Platycerium; Polypodiaceae; species diversification |
| 语种 | 英语 |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| WOS记录号 | WOS:001149605100001 |
| 来源期刊 | ANNALS OF BOTANY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/302057 |
| 作者单位 | Zhongkai University of Agriculture & Engineering; Chinese Academy of Sciences; Institute of Botany, CAS; Chinese Academy of Sciences; South China Botanical Garden, CAS; South China Agricultural University |
| 推荐引用方式 GB/T 7714 | . ′Out of Africa′ origin of the pantropical staghorn fern genus Platycerium (Polypodiaceae) supported by plastid phylogenomics and biogeographical analysis[J],2024,133(5-6). |
| APA | (2024).′Out of Africa′ origin of the pantropical staghorn fern genus Platycerium (Polypodiaceae) supported by plastid phylogenomics and biogeographical analysis.ANNALS OF BOTANY,133(5-6). |
| MLA | "′Out of Africa′ origin of the pantropical staghorn fern genus Platycerium (Polypodiaceae) supported by plastid phylogenomics and biogeographical analysis".ANNALS OF BOTANY 133.5-6(2024). |
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