ArticleAnnals of botany2024
'Out of Africa' origin of the pantropical staghorn fern genus Platycerium (Polypodiaceae) supported by plastid phylogenomics and biogeographical analysis.
Article in Annals of botany, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Nighttime warming enhances photosynthetic activity and induces changes in chloroplast membrane structure and antioxidant profile in Platycerium ferns.Scientific reports · 2026Article
- The complete chloroplast genome ofMitochondrial DNA. Part B, Resources · 2026Article
- Insight into the Sporulation Physiology of Elkhorn Fern: Metabolic, Hormonal, and Pigment Changes Within a Single Leaf ofInternational journal of molecular sciences · 2025Article
- Historical biogeography and plastome evolution of Commelinaceae Mirb. (Commelinales) corroborate the East Gondwanan origins.BMC plant biology · 2025Article
- Evolutionary origins and life-history correlates of coloniality in the epiphytic fern genus Platycerium (Polypodiaceae).PloS one · 2025Article
- Comparative plastome analyses and evolutionary relationships ofFrontiers in plant science · 2025Article
- Molecular phylogenetic analyses reveal multiple long-distance dispersal events and extensive cryptic speciation inFrontiers in plant science · 2024Article
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7 authors.
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Abstract
BACKGROUND AND
aimsThe 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.
methodsPlastomes 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
resultsThe present analyses yielded a robustly supported phylogenetic hypothesis of Platycerium. Molecular dating results showed that Platycerium split from its sister genus Hovenkampia ~35.2 million years ago (Ma) near the Eocene-Oligocene boundary and began to diverge ~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.
conclusionsOur 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.
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