The spatiotemporal origin of Polynesian blueberries ( Vaccinium )
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| Format: | Artículo Open Access |
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Wiley
2025
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| author | Anna L. Becker Andrew A. Crowl Andre S. Chanderbali Pamela S. Soltis Nico Cellinese Peter W. Fritsch |
| author_facet | Anna L. Becker Andrew A. Crowl Andre S. Chanderbali Pamela S. Soltis Nico Cellinese Peter W. Fritsch Anna L. Becker Andrew A. Crowl Andre S. Chanderbali Pamela S. Soltis Nico Cellinese Peter W. Fritsch |
| collection | Wiley Open Access |
| contents | The spatiotemporal origin of Polynesian blueberries ( Vaccinium ) Anna L. Becker Andrew A. Crowl Andre S. Chanderbali Pamela S. Soltis Nico Cellinese Peter W. Fritsch American Journal of Botany Abstract Premise We aimed to elucidate the spatiotemporal origins and biogeographic history of Polynesian blueberries within Vaccinium sect. Myrtillus , specifically those endemic to Hawaiʻi and the closely related V. cereum in southeastern Polynesia. Methods A HybSeq data set was constructed for Polynesian Vaccinium and added to a previously published data set for tribe Vaccinieae. Phylogenomic, ancestral area, fossil‐calibrated divergence time, and phylogenetic network analyses were conducted to assess the origin and biogeographic history of the group. Results Hawaiʻian taxa plus a sample of Vaccinium cereum from Ua Pou Island formed a clade that was phylogenetically nested within continental Vaccinium sect. Myrtillus . The clade was inferred to have originated from temperate East Asia ca. 7.1–5.2 million years ago, dispersing to Kauaʻi either directly or via one of the subsident or now‐submerged Northwestern Islands of the archipelago. Nuclear‐plastid genome discordance and network analysis corroborated the previously hypothesized hybrid origin of V. cereum and suggested a possible dispersal from Hawaiʻi to coastal North America followed by introgression into the mainland species V. ovalifolium . Conclusions Our study suggests that an ancestral exaptation to temperate climates and an evolutionary history of the Hawaiʻian Vaccinium clade dating back at least to the origin of Kauaʻi have likely contributed to the present‐day diversity of the group. Our results support a temperate East Asian origin, rare among the native plants of Hawaiʻi, and highlight the ongoing potential for both short‐ and long‐distance dispersal in this group of island plants without a reduction or loss of dispersibility. 10.1002/ajb2.70113 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/ajb2.70113 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_ajb2_70113 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2025 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | The spatiotemporal origin of Polynesian blueberries ( Vaccinium ) Anna L. Becker Andrew A. Crowl Andre S. Chanderbali Pamela S. Soltis Nico Cellinese Peter W. Fritsch American Journal of Botany The spatiotemporal origin of Polynesian blueberries ( Vaccinium ) Anna L. Becker Andrew A. Crowl Andre S. Chanderbali Pamela S. Soltis Nico Cellinese Peter W. Fritsch American Journal of Botany Abstract Premise We aimed to elucidate the spatiotemporal origins and biogeographic history of Polynesian blueberries within Vaccinium sect. Myrtillus , specifically those endemic to Hawaiʻi and the closely related V. cereum in southeastern Polynesia. Methods A HybSeq data set was constructed for Polynesian Vaccinium and added to a previously published data set for tribe Vaccinieae. Phylogenomic, ancestral area, fossil‐calibrated divergence time, and phylogenetic network analyses were conducted to assess the origin and biogeographic history of the group. Results Hawaiʻian taxa plus a sample of Vaccinium cereum from Ua Pou Island formed a clade that was phylogenetically nested within continental Vaccinium sect. Myrtillus . The clade was inferred to have originated from temperate East Asia ca. 7.1–5.2 million years ago, dispersing to Kauaʻi either directly or via one of the subsident or now‐submerged Northwestern Islands of the archipelago. Nuclear‐plastid genome discordance and network analysis corroborated the previously hypothesized hybrid origin of V. cereum and suggested a possible dispersal from Hawaiʻi to coastal North America followed by introgression into the mainland species V. ovalifolium . Conclusions Our study suggests that an ancestral exaptation to temperate climates and an evolutionary history of the Hawaiʻian Vaccinium clade dating back at least to the origin of Kauaʻi have likely contributed to the present‐day diversity of the group. Our results support a temperate East Asian origin, rare among the native plants of Hawaiʻi, and highlight the ongoing potential for both short‐ and long‐distance dispersal in this group of island plants without a reduction or loss of dispersibility. 10.1002/ajb2.70113 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | The spatiotemporal origin of Polynesian blueberries ( Vaccinium ) |
| topic | American Journal of Botany |
| url | https://bsapubs.onlinelibrary.wiley.com/doi/10.1002/ajb2.70113 |