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Dagallier LPMJ, Mbago FM, Couderc M, Gaudeul M, Grall A, Loup C, Wieringa JJ, Sonké B, Couvreur TLP. Phylogenomic inference of the African tribe Monodoreae (Annonaceae) and taxonomic revision of Dennettia, Uvariodendron and Uvariopsis. PHYTOKEYS 2023; 233:1-200. [PMID: 37811332 PMCID: PMC10552675 DOI: 10.3897/phytokeys.233.103096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 08/16/2023] [Indexed: 10/10/2023]
Abstract
Monodoreae (Annonaceae) is a tribe composed of 11 genera and 90 species restricted to the tropical African rain forests. All the genera are taxonomically well circumscribed except the species rich genera Uvariodendron and Uvariopsis which lack a recent taxonomic revision. Here, we used a robust phylogenomic approach, including all the 90 currently accepted species, with several specimens per species, and based on more than 300 Annonaceae-specific nuclear genes, to infer the phylogenetic tree of the Monodoreae and test the limits between the genera and species. We recover all the genera as monophyletic, except the genus Uvariopsis for which the species Uvariopsistripetala falls outside this clade. We thus reinstate the monotypic genus Dennettia for its single species Dennettiatripetala. We also erect a new tribe, Ophrypetaleae trib. nov., to accommodate the genera Ophrypetalum and Sanrafaelia, as we recover them excluded from the Monodoreae tribe with good support. Below the genus level, the genera Isolona, Monodora, Uvariastrum, Uvariodendron and Uvariopsis show weakly supported nodes and phylogenetic conflicts, suggesting that population level processes of evolution might occur in these clades. Our results also support, at the molecular level, the description of several new species of Uvariodendron and Uvariopsis, as well as several new synonymies. Finally, we present a taxonomic revision of the genera Dennettia, Uvariodendron and Uvariopsis, which contain one, 18 and 17 species respectively. We provide a key to the 11 genera of the Monodoraeae and describe four new species to science: Uvariodendronkimbozaense Dagallier & Couvreur, sp. nov., Uvariodendronmossambicense Robson ex Dagallier & Couvreur, sp. nov., Uvariodendronpilosicarpum Dagallier & Couvreur, sp. nov. and Uvariopsisoligocarpa Dagallier & Couvreur, sp. nov., and provide provisional descriptions of three putatively new species. We also present lectotypifications and nomenclatural changes implying synonymies and new combinations (Uvariodendroncitriodorum (Le Thomas) Dagallier & Couvreur, comb. et stat. nov., Uvariodendronfuscumvar.magnificum (Verdc.) Dagallier & Couvreur, comb. et stat. nov., Uvariopsiscongensisvar.angustifolia Dagallier & Couvreur, var. nov., Uvariopsisguineensisvar.globiflora (Keay) Dagallier & Couvreur, comb. et stat. nov., and Uvariopsissolheidiivar.letestui (Pellegr.) Dagallier & Couvreur, comb. et stat. nov.).
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Affiliation(s)
- Léo-Paul M. J. Dagallier
- DIADE, Université de Montpellier, IRD, CIRAD, Montpellier, France
- Institute of Systematic Botany, The New York Botanical Garden, Bronx, New York 10458, USA
| | - Frank M. Mbago
- The Herbarium, Botany Department, Box 35060, University of Dar es Salaam, Dar es Salaam, Tanzania
| | - Marie Couderc
- DIADE, Université de Montpellier, IRD, CIRAD, Montpellier, France
| | - Myriam Gaudeul
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum National d’Histoire Naturelle-CNRS-SU-EPHE-UA, 57 rue Cuvier, CP 39, 75231 Paris, Cedex 05, France
| | - Aurélie Grall
- Herbaria Basel, Department of Environmental Sciences, University of Basel, Basel, Switzerland
- Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, UK
| | - Caroline Loup
- DIADE, Université de Montpellier, IRD, CIRAD, Montpellier, France
| | - Jan J. Wieringa
- Herbier MPU, DCSPH – CC 99010, Université de Montpellier, 163 rue A. Broussonnet, F-34090 Montpellier, France
| | - Bonaventure Sonké
- Naturalis Biodiversity Center, Darwinweg 2, 2333 CR, Leiden, Netherlands
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Xue B, Ding HB, Yao G, Shao YY, Fan XJ, Tan YH. From Polyalthia to Polyalthiopsis (Annonaceae): transfer of species enlarges a previously monotypic genus. PHYTOKEYS 2020; 148:71-91. [PMID: 32536785 PMCID: PMC7270077 DOI: 10.3897/phytokeys.148.50929] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 04/06/2020] [Indexed: 05/28/2023]
Abstract
The genus Polyalthiopsis Chaowasku (Annonaceae) was a poorly known monotypic genus from Vietnam that was recently segregated from the highly polyphyletic genus Polyalthia s.l. The sister clade relationship between Polyalthiopsis and Miliusa was not well established in previous study. The phylogenetic position of two Polyalthia spp. from China, P. chinensis S.K.Wu ex P.T.Li and P. verrucipes C.Y.Wu ex P.T.Li, remains unresolved and is shown here to be phylogenetically affiliated with Polyalthiopsis. Phylogenetic analyses of six chloroplast regions (matK, ndhF, psbA-trnH, rbcL, trnL-F and ycf1; ca.7.3 kb, 60 accessions) unambiguously placed Polyalthia chinensis and P. verrucipes in the same clade with Polyalthiopsis floribunda (PP = 1, MPBS = 97%); the entire clade is sister to Miliusa with weak to strong support (PP = 1, MPBS = 54%). Polyalthia chinensis and P. verrucipes share several diagnostic characters with Polyalthiopsis floribunda, including the raised midrib on the upper surface of the leaf in vivo, conspicuous foliar glands when dried, petiole with transverse striations when dried and axillary inflorescences. The two species differ from Polyalthiopsis floribunda in having fewer flowers per inflorescence, longer linear petals and two ovules per carpel. On the basis of the combined molecular phylogenetic and morphological data, we propose two new combinations, Polyalthiopsis chinensis (S.K.Wu ex P.T.Li) B.Xue & Y.H.Tan and Polyalthiopsis verrucipes (C.Y.Wu ex P.T.Li) B.Xue & Y.H.Tan. The protologue of Polyalthia verrucipes did not include a description of the flowers, which we provide here. An updated description for the genus Polyalthiopsis and a key to species in the genus Polyalthiopsis is also provided.
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Affiliation(s)
- Bine Xue
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, China
| | - Hong-Bo Ding
- Southeast Asia Biodiversity Research Institute & Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan 666303, China
| | - Gang Yao
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Yun-Yun Shao
- Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Xiao-Jing Fan
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, Guangdong, China
| | - Yun-Hong Tan
- Southeast Asia Biodiversity Research Institute & Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan 666303, China
- Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Mengla, Yunnan 666303, China
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Chatrou LW, Turner IM, Klitgaard BB, Maas PJM, Utteridge TMA. A linear sequence to facilitate curation of herbarium specimens of Annonaceae. KEW BULLETIN 2018; 73:39. [PMID: 30956369 PMCID: PMC6413810 DOI: 10.1007/s12225-018-9764-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/19/2018] [Indexed: 06/09/2023]
Abstract
This paper provides a linear sequence of four subfamilies, 15 tribes and 106 genera of the magnoliid family Annonaceae, based on state-of-the-art and stable phylogenetic relationships. The linear sequence facilitates the organisation of Annonaceae herbarium specimens.
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Affiliation(s)
- Lars W. Chatrou
- Wageningen University and Research, Biosystematics group, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
| | - Ian M. Turner
- Singapore Botanical Liaison Officer, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB UK
- Herbarium, Singapore Botanic Gardens, National Parks Board, 1 Cluny Road, Singapore, 259569 Singapore
| | | | - Paul J. M. Maas
- Naturalis Biodiversity Center, Section Botany, P.O. Box 9517, 2300 RA Leiden, The Netherlands
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Guo X, Tang CC, Thomas DC, Couvreur TLP, Saunders RMK. A mega-phylogeny of the Annonaceae: taxonomic placement of five enigmatic genera and support for a new tribe, Phoenicantheae. Sci Rep 2017; 7:7323. [PMID: 28779135 PMCID: PMC5544705 DOI: 10.1038/s41598-017-07252-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 06/26/2017] [Indexed: 11/21/2022] Open
Abstract
The Annonaceae, the largest family in the early-divergent order Magnoliales, comprises 107 genera and c. 2,400 species. Previous molecular phylogenetic studies targeting different taxa have generated large quantities of partially overlapping DNA sequence data for many species, although a large-scale phylogeny based on the maximum number of representatives has never been reconstructed. We use a supermatrix of eight chloroplast markers (rbcL, matK, ndhF, psbA-trnH, trnL-F, atpB-rbcL, trnS-G and ycf1) to reconstruct the most comprehensive tree to date, including 705 species (29%) from 105 genera (98%). This provides novel insights into the relationships of five enigmatic genera (Bocagea, Boutiquea, Cardiopetalum, Duckeanthus and Phoenicanthus). Fifteen main clades are retrieved in subfamilies Annonoideae and Malmeoideae collectively, 14 of which correspond with currently recognised tribes. Phoenicanthus cannot be accommodated in any existing tribe, however: it is retrieved as sister to a clade comprising the tribes Dendrokingstonieae, Monocarpieae and Miliuseae, and we therefore validate a new tribe, Phoenicantheae. Our results provide strong support for many previously recognised groups, but also indicate non-monophyly of several genera (Desmopsis, Friesodielsia, Klarobelia, Oxandra, Piptostigma and Stenanona). The relationships of these non-monophyletic genera-and two other genera (Froesiodendron and Melodorum) not yet sampled-are discussed, with recommendations for future research.
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Affiliation(s)
- Xing Guo
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
| | - Chin Cheung Tang
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
- School of Science and Technology, The Open University of Hong Kong, Ho Man Tin, Kowloon, Hong Kong, China
| | - Daniel C Thomas
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
- Singapore Botanic Gardens, 1 Cluny Road, Singapore, 259569, Singapore
| | - Thomas L P Couvreur
- Institut de Recherche pour le Développement (IRD), UMR-DIADE, BP 64501, F-34394, Montpellier, cedex 5, France
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Chaowasku T, Thomas DC, van der Ham RWJM, Smets EF, Mols JB, Chatrou LW. A plastid DNA phylogeny of tribe Miliuseae: insights into relationships and character evolution in one of the most recalcitrant major clades of Annonaceae. AMERICAN JOURNAL OF BOTANY 2014; 101:691-709. [PMID: 24688057 DOI: 10.3732/ajb.1300403] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
PREMISE OF THE STUDY Tribe Miliuseae (∼25 genera and ∼510 species) includes a substantial part of the species and generic diversity in the pantropical flowering-plant family Annonaceae (∼108 genera and ∼2400 species). Previous molecular phylogenetic analyses have failed to resolve the backbone phylogeny of the tribe, impeding biogeographical and evolutionary studies. We use a dense generic taxon sample (∼89% of generic diversity in Miliuseae) and plastid DNA sequence data (∼7 kb) to clarify the phylogenetic relationships of and within the tribe. METHODS Parsimony and Bayesian phylogenetic reconstructions and ancestral character-state reconstructions of several reproductive characters were performed. KEY RESULTS Dendrokingstoniae, Monocarpieae, and Miliuseae are recovered in a strongly supported clade, and each tribe is strongly supported as monophyletic. Miliuseae are characterized by a synapomorphic cryptoaperturate/disulculate pollen apertural system. Stenanona is shown to be nested within the paraphyletic genus Desmopsis. The only Neotropical clade (Sapranthus, Tridimeris, Desmopsis, and Stenanona) in the predominantly Asian Miliuseae is shown to be closely related to an undescribed genus from continental Southeast Asia and the Indo-Malayan and Austral-Pacific genus Meiogyne. Ancestral character-state reconstructions of several reproductive characters that are diagnostically important at the generic level indicate a considerable degree of homoplasy. CONCLUSIONS The results improve our understanding of the relationships of and within Miliuseae, but parts of the backbone of the phylogeny remain poorly supported. Additional data from variable nuclear markers or reduced-genome-representation approaches seem to be required to further resolve relationships within this recalcitrant clade.
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Affiliation(s)
- Tanawat Chaowasku
- Naturalis Biodiversity Center (section NHN), Leiden University, Einsteinweg 2, 2333 CC Leiden, The Netherlands
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