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Pérez-Calle V, Bellot S, Kuhnhäuser BG, Pillon Y, Forest F, Leitch IJ, Baker WJ. Phylogeny, biogeography and ecological diversification of New Caledonian palms (Arecaceae). ANNALS OF BOTANY 2024; 134:85-100. [PMID: 38527418 PMCID: PMC11161567 DOI: 10.1093/aob/mcae043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/24/2024] [Indexed: 03/27/2024]
Abstract
BACKGROUND AND AIMS The geographical origin and evolutionary mechanisms underpinning the rich and distinctive New Caledonian flora remain poorly understood. This is attributable to the complex geological past of the island and to the scarcity of well-resolved species-level phylogenies. Here, we infer phylogenetic relationships and divergence times of New Caledonian palms, which comprise 40 species. We use this framework to elucidate the biogeography of New Caledonian palm lineages and to explore how extant species might have formed. METHODS A phylogenetic tree including 37 New Caledonian palm species and 77 relatives from tribe Areceae was inferred from 151 nuclear genes obtained by targeted sequencing. Fossil-calibrated divergence times were estimated and ancestral ranges inferred. Ancestral and extant ecological preferences in terms of elevation, precipitation and substrate were compared between New Caledonian sister species to explore their possible roles as drivers of speciation. KEY RESULTS New Caledonian palms form four well-supported clades, inside which relationships are well resolved. Our results support the current classification but suggest that Veillonia and Campecarpus should be resurrected and fail to clarify whether Rhopalostylidinae is sister to or nested in Basseliniinae. New Caledonian palm lineages are derived from New Guinean and Australian ancestors, which reached the island through at least three independent dispersal events between the Eocene and Miocene. Palms then dispersed out of New Caledonia at least five times, mainly towards Pacific islands. Geographical and ecological transitions associated with speciation events differed across time and genera. Substrate transitions were more frequently associated with older events than with younger ones. CONCLUSIONS Neighbouring areas and a mosaic of local habitats shaped the palm flora of New Caledonia, and the island played a significant role in generating palm diversity across the Pacific region. This new spatio-temporal framework will enable population-level ecological and genetic studies to unpick the mechanisms underpinning New Caledonian palm endemism.
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Affiliation(s)
- Victor Pérez-Calle
- Department of Biology, Memorial University of Newfoundland, St John’s, Newfoundland A1B 3X9, Canada
| | | | | | - Yohan Pillon
- DIADE, Univ Montpellier, CIRAD, IRD, Montpellier, France
| | - Félix Forest
- Royal Botanic Gardens, Kew, Richmond TW9 3AE, UK
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Yao G, Zhang YQ, Barrett C, Xue B, Bellot S, Baker WJ, Ge XJ. A plastid phylogenomic framework for the palm family (Arecaceae). BMC Biol 2023; 21:50. [PMID: 36882831 PMCID: PMC9993706 DOI: 10.1186/s12915-023-01544-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 02/14/2023] [Indexed: 03/09/2023] Open
Abstract
BACKGROUND Over the past decade, phylogenomics has greatly advanced our knowledge of angiosperm evolution. However, phylogenomic studies of large angiosperm families with complete species or genus-level sampling are still lacking. The palms, Arecaceae, are a large family with ca. 181 genera and 2600 species and are important components of tropical rainforests bearing great cultural and economic significance. Taxonomy and phylogeny of the family have been extensively investigated by a series of molecular phylogenetic studies in the last two decades. Nevertheless, some phylogenetic relationships within the family are not yet well-resolved, especially at the tribal and generic levels, with consequent impacts for downstream research. RESULTS Plastomes of 182 palm species representing 111 genera were newly sequenced. Combining these with previously published plastid DNA data, we were able to sample 98% of palm genera and conduct a plastid phylogenomic investigation of the family. Maximum likelihood analyses yielded a robustly supported phylogenetic hypothesis. Phylogenetic relationships among all five palm subfamilies and 28 tribes were well-resolved, and most inter-generic phylogenetic relationships were also resolved with strong support. CONCLUSIONS The inclusion of nearly complete generic-level sampling coupled with nearly complete plastid genomes strengthened our understanding of plastid-based relationships of the palms. This comprehensive plastid genome dataset complements a growing body of nuclear genomic data. Together, these datasets form a novel phylogenomic baseline for the palms and an increasingly robust framework for future comparative biological studies of this exceptionally important plant family.
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Affiliation(s)
- Gang Yao
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China
| | - Yu-Qu Zhang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, and Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.,Present Address: College of Pharmacy, Shaanxi University of Chinese Medicine, Xi'an, China
| | - Craig Barrett
- Department of Biology, West Virginia University, Morgantown, WV, USA
| | - Bine Xue
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | | | | | - Xue-Jun Ge
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, and Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China. .,Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, China.
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Bacon CD, Silvestro D, Hoorn C, Bogotá-Ángel G, Antonelli A, Chazot N. The origin of modern patterns of continental diversity in Mauritiinae palms: the Neotropical museum and the Afrotropical graveyard. Biol Lett 2022; 18:20220214. [PMID: 36382374 PMCID: PMC9667138 DOI: 10.1098/rsbl.2022.0214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 10/25/2022] [Indexed: 11/18/2023] Open
Abstract
While the latitudinal diversity gradient has received much attention, biodiversity and species richness also vary between continents across similar latitudes. Fossil information can be used to understand the evolutionary mechanisms that generated such variation between continents of similar latitudes. We integrated fossil data into a phylogenetic analysis of the Mauritiinae palms, whose extant diversity is restricted to the Neotropics, but extended across Africa and India during most of the Cenozoic. Mauritiinae diverged from its sister lineage Raphiinae ca 106 Ma. Using ancestral state estimation and a lineage through time analysis, we found that diversity arose globally during the late Cretaceous and Palaeocene across South America, Africa and India. The Palaeocene-Eocene transition (ca 56 Ma) marked the end of global Mauritiinae expansion, and the beginning of their decline in both Africa and India. Mauritiinae disappeared from the Indian subcontinent and Africa at the end of the Eocene and the Miocene, respectively. By contrast, Neotropical diversity steadily increased over the last 80 Myr. Taken together, our results suggest that the Neotropics functioned as a continental-scale refuge for Mauritiinae palms, where lineages survived and diversified while global climatic changes that drastically reduced rainforests led to their demise on other continents.
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Affiliation(s)
- Christine D. Bacon
- Gothenburg Global Biodiversity Centre, SE-405 30 Gothenburg, Sweden
- Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Daniele Silvestro
- Gothenburg Global Biodiversity Centre, SE-405 30 Gothenburg, Sweden
- Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
- Swiss Institute of Bioinformatics, Quartier Sorge, 1700 Fribourg, Switzerland
| | - Carina Hoorn
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Giovanni Bogotá-Ángel
- Universidad Distrital Francisco José Caldas, Facultad del Medio Ambiente y Recursos Naturales, Bogotá DC, Colombia
| | - Alexandre Antonelli
- Gothenburg Global Biodiversity Centre, SE-405 30 Gothenburg, Sweden
- Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden
- Royal Botanical Gardens Kew, Richmond TW9 3AE, UK
- Department of Biology, University of Oxford, Oxford OX1 3RB, UK
| | - Nicolas Chazot
- Gothenburg Global Biodiversity Centre, SE-405 30 Gothenburg, Sweden
- Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden
- Department of Ecology, Swedish University of Agricultural Sciences, SE-750 Uppsala, Sweden
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Thureborn O, Razafimandimbison SG, Wikström N, Rydin C. Target capture data resolve recalcitrant relationships in the coffee family (Rubioideae, Rubiaceae). FRONTIERS IN PLANT SCIENCE 2022; 13:967456. [PMID: 36160958 PMCID: PMC9493367 DOI: 10.3389/fpls.2022.967456] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 08/03/2022] [Indexed: 06/16/2023]
Abstract
Subfamily Rubioideae is the largest of the main lineages in the coffee family (Rubiaceae), with over 8,000 species and 29 tribes. Phylogenetic relationships among tribes and other major clades within this group of plants are still only partly resolved despite considerable efforts. While previous studies have mainly utilized data from the organellar genomes and nuclear ribosomal DNA, we here use a large number of low-copy nuclear genes obtained via a target capture approach to infer phylogenetic relationships within Rubioideae. We included 101 Rubioideae species representing all but two (the monogeneric tribes Foonchewieae and Aitchinsonieae) of the currently recognized tribes, and all but one non-monogeneric tribe were represented by more than one genus. Using data from the 353 genes targeted with the universal Angiosperms353 probe set we investigated the impact of data type, analytical approach, and potential paralogs on phylogenetic reconstruction. We inferred a robust phylogenetic hypothesis of Rubioideae with the vast majority (or all) nodes being highly supported across all analyses and datasets and few incongruences between the inferred topologies. The results were similar to those of previous studies but novel relationships were also identified. We found that supercontigs [coding sequence (CDS) + non-coding sequence] clearly outperformed CDS data in levels of support and gene tree congruence. The full datasets (353 genes) outperformed the datasets with potentially paralogous genes removed (186 genes) in levels of support but increased gene tree incongruence slightly. The pattern of gene tree conflict at short internal branches were often consistent with high levels of incomplete lineage sorting (ILS) due to rapid speciation in the group. While concatenation- and coalescence-based trees mainly agreed, the observed phylogenetic discordance between the two approaches may be best explained by their differences in accounting for ILS. The use of target capture data greatly improved our confidence and understanding of the Rubioideae phylogeny, highlighted by the increased support for previously uncertain relationships and the increased possibility to explore sources of underlying phylogenetic discordance.
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Affiliation(s)
- Olle Thureborn
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
| | | | - Niklas Wikström
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
- Bergius Foundation, Royal Swedish Academy of Sciences, Stockholm, Sweden
| | - Catarina Rydin
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
- Bergius Foundation, Royal Swedish Academy of Sciences, Stockholm, Sweden
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Baker WJ, Bailey P, Barber V, Barker A, Bellot S, Bishop D, Botigué LR, Brewer G, Carruthers T, Clarkson JJ, Cook J, Cowan RS, Dodsworth S, Epitawalage N, Françoso E, Gallego B, Johnson MG, Kim JT, Leempoel K, Maurin O, McGinnie C, Pokorny L, Roy S, Stone M, Toledo E, Wickett NJ, Zuntini AR, Eiserhardt WL, Kersey PJ, Leitch IJ, Forest F. A Comprehensive Phylogenomic Platform for Exploring the Angiosperm Tree of Life. Syst Biol 2021; 71:301-319. [PMID: 33983440 PMCID: PMC8830076 DOI: 10.1093/sysbio/syab035] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/06/2021] [Accepted: 05/08/2021] [Indexed: 12/22/2022] Open
Abstract
The tree of life is the fundamental biological roadmap for navigating the evolution and properties of life on Earth, and yet remains largely unknown. Even angiosperms (flowering plants) are fraught with data gaps, despite their critical role in sustaining terrestrial life. Today, high-throughput sequencing promises to significantly deepen our understanding of evolutionary relationships. Here, we describe a comprehensive phylogenomic platform for exploring the angiosperm tree of life, comprising a set of open tools and data based on the 353 nuclear genes targeted by the universal Angiosperms353 sequence capture probes. The primary goals of this article are to (i) document our methods, (ii) describe our first data release, and (iii) present a novel open data portal, the Kew Tree of Life Explorer (https://treeoflife.kew.org). We aim to generate novel target sequence capture data for all genera of flowering plants, exploiting natural history collections such as herbarium specimens, and augment it with mined public data. Our first data release, described here, is the most extensive nuclear phylogenomic data set for angiosperms to date, comprising 3099 samples validated by DNA barcode and phylogenetic tests, representing all 64 orders, 404 families (96\documentclass[12pt]{minimal}
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}{}$\%$\end{document}) and 2333 genera (17\documentclass[12pt]{minimal}
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}{}$\%$\end{document}). A “first pass” angiosperm tree of life was inferred from the data, which totaled 824,878 sequences, 489,086,049 base pairs, and 532,260 alignment columns, for interactive presentation in the Kew Tree of Life Explorer. This species tree was generated using methods that were rigorous, yet tractable at our scale of operation. Despite limitations pertaining to taxon and gene sampling, gene recovery, models of sequence evolution and paralogy, the tree strongly supports existing taxonomy, while challenging numerous hypothesized relationships among orders and placing many genera for the first time. The validated data set, species tree and all intermediates are openly accessible via the Kew Tree of Life Explorer and will be updated as further data become available. This major milestone toward a complete tree of life for all flowering plant species opens doors to a highly integrated future for angiosperm phylogenomics through the systematic sequencing of standardized nuclear markers. Our approach has the potential to serve as a much-needed bridge between the growing movement to sequence the genomes of all life on Earth and the vast phylogenomic potential of the world’s natural history collections. [Angiosperms; Angiosperms353; genomics; herbariomics; museomics; nuclear phylogenomics; open access; target sequence capture; tree of life.]
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Affiliation(s)
- William J Baker
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Paul Bailey
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Vanessa Barber
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Abigail Barker
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Sidonie Bellot
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - David Bishop
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Laura R Botigué
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom.,Centre for Research in Agricultural Genomics, Campus UAB, Edifici CRAG, Bellaterra Cerdanyola del Vallès, 08193 Barcelona, Spain
| | - Grace Brewer
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Tom Carruthers
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - James J Clarkson
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Jeffrey Cook
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Robyn S Cowan
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Steven Dodsworth
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom.,School of Life Sciences, University of Bedfordshire, University Square, Luton LU1 3JU, United Kingdom
| | | | - Elaine Françoso
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Berta Gallego
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Matthew G Johnson
- Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409, USA
| | - Jan T Kim
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom.,Department of Computer Science, School of Physics, Engineering and Computer Science, University of Hertfordshire, Hatfield, Hertfordshire, AL10 9AB, United Kingdom
| | - Kevin Leempoel
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Olivier Maurin
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | | | - Lisa Pokorny
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom.,Centre for Plant Biotechnology and Genomics (CBGP) UPM-INIA, 28223 Pozuelo de Alarcón (Madrid), Spain
| | - Shyamali Roy
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Malcolm Stone
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Eduardo Toledo
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Norman J Wickett
- Plant Science and Conservation, Chicago Botanic Garden, 1000 Lake Cook Road, Glencoe, IL 60022, USA
| | | | - Wolf L Eiserhardt
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom.,Department of Biology, Aarhus University, 8000 Aarhus C, Denmark
| | - Paul J Kersey
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Ilia J Leitch
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
| | - Félix Forest
- Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
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