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Gosline G, Bidault E, van der Burgt X, Cahen D, Challen G, Condé N, Couch C, Couvreur TLP, Dagallier LPMJ, Darbyshire I, Dawson S, Doré TS, Goyder D, Grall A, Haba P, Haba P, Harris D, Hind DJN, Jongkind C, Konomou G, Larridon I, Lewis G, Ley A, Lock M, Lucas E, Magassouba S, Mayo S, Molmou D, Monro A, Onana JM, Paiva J, Paton A, Phillips S, Prance G, Quintanar A, Rokni S, Shah T, Schrire B, Schuiteman A, Simões ARG, Sosef M, Stévart T, Stone RD, Utteridge T, Wilkin P, Xanthos M, Nic Lughadha E, Cheek M. A Taxonomically-verified and Vouchered Checklist of the Vascular Plants of the Republic of Guinea. Sci Data 2023; 10:327. [PMID: 37236921 DOI: 10.1038/s41597-023-02236-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
The Checklist of the Vascular Plants of the Republic of Guinea (CVPRG) is a specimen-based, expert-validated knowledge product, which provides a concise synthesis and overview of current knowledge on 3901 vascular plant species documented from Guinea (Conakry), West Africa, including their accepted names and synonyms, as well as their distribution and status within Guinea (indigenous or introduced, endemic or not). The CVPRG is generated automatically from the Guinea Collections Database and the Guinea Names Backbone Database, both developed and maintained at the Royal Botanic Gardens, Kew, in collaboration with the staff of the National Herbarium of Guinea. A total of 3505 indigenous vascular plant species are reported of which 3328 are flowering plants (angiosperms); this represents a 26% increase in known indigenous angiosperms since the last floristic overview. Intended as a reference for scientists documenting the diversity and distribution of the Guinea flora, the CVPRG will also inform those seeking to safeguard the rich plant diversity of Guinea and the societal, ecological and economic benefits accruing from these biological resources.
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Affiliation(s)
| | | | | | | | | | - Nagnouma Condé
- Herbier National de Guinée, UGAN-Conakry, Conakry, Guinea
| | - Charlotte Couch
- Royal Botanic Gardens, Kew, Richmond, UK
- Herbier National de Guinée, UGAN-Conakry, Conakry, Guinea
| | - Thomas L P Couvreur
- DIADE, Univ Montpellier, CIRAD, IRD, Montpellier, France
- Naturalis Biodiversity Centre, Botany Section, Leiden, The Netherlands
| | | | | | | | | | | | | | - Pépé Haba
- Herbier National de Guinée, UGAN-Conakry, Conakry, Guinea
| | - Pierre Haba
- Herbier National de Guinée, UGAN-Conakry, Conakry, Guinea
| | | | | | | | - Gbamon Konomou
- Herbier National de Guinée, UGAN-Conakry, Conakry, Guinea
| | | | | | | | | | - Eve Lucas
- Royal Botanic Gardens, Kew, Richmond, UK
| | | | - Simon Mayo
- Royal Botanic Gardens, Kew, Richmond, UK
| | - Denise Molmou
- Herbier National de Guinée, UGAN-Conakry, Conakry, Guinea
| | | | - Jean Michel Onana
- Université de Yaoundé 1, Cameroon; IRAD-Herbier National Camerounais, Yaoundé, Cameroon
| | | | - Alan Paton
- Royal Botanic Gardens, Kew, Richmond, UK
| | | | | | | | - Saba Rokni
- Royal Botanic Gardens, Kew, Richmond, UK
| | - Toral Shah
- Royal Botanic Gardens, Kew, Richmond, UK
| | | | | | | | | | - Tariq Stévart
- Missouri Botanical Garden, St. Louis, USA
- Meise Botanic Garden, Meise, Belgium
| | - R Doug Stone
- University of KwaZulu-Natal, Durban, South Africa
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Wu XJ, Xie Y, Gu XX, Zhu HY, Huang LX. LncRNA XIST promotes mitochondrial dysfunction of hepatocytes to aggravate hepatic fibrogenesis via miR-539-3p/ADAMTS5 axis. Mol Cell Biochem 2023; 478:291-303. [PMID: 35794289 DOI: 10.1007/s11010-022-04506-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 06/15/2022] [Indexed: 02/02/2023]
Abstract
A previous study indicated that long non-coding RNA X-inactive-specific transcript (XIST) promoted ethanol-induced HSCs autophagy and activation. Considering the critical role of HSC activation in hepatic fibrosis, the aim of the present study was to reveal the exact role of XIST in liver fibrosis and its underlying mechanism. The expression of XIST in the liver from CCL4-induced mice and control mice as well as human fibrotic liver tissue and healthy liver tissue was examined. The mitochondrial reactive oxygen species (mtROS), mitochondrial membrane potential (MMP), and mitochondrial morphology were measured to assess the mitochondrial damage. The relationship between XIST and miR-539-3p as well as between miR-539-3p and ADAMTS5 was verified by a dual-luciferase reporter assay. The expression levels of HSCs activation markers were examined by Western blot. The results showed that the XIST was upregulated in fibrotic liver tissue, and overexpression of XIST induced mitochondrial dysfunction in hepatocytes. miR-539-3p directly targeted XIST, and ADAMTS5 mRNA was a downstream target of miR-539-3p. Knockdown of miR-539-3p led to an increased mitochondrial damage in hepatocytes in terms of reduced mitochondrial length, decreased MMP, and increased ROS production. However, the depletion of ADAMTS5 reversed the regulatory effect of XIST on mitochondrial damage in hepatocytes and the activation of HSCs. Our study revealed the critical role of the XIST/miR-539-3p/ADAMTS5 axis in regulating mitochondrial damage in hepatocytes and the activation of HSCs. This study may provide a potential therapeutic strategy for the treatment of liver fibrosis.
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Affiliation(s)
- Xiong-Jian Wu
- Department of Gastroenterology, The First Affiliated Hospital of Gannan Medical University, No. 23 Youth Road, Zhanggong District, Ganzhou, 341000, Jiangxi, People's Republic of China.
| | - Yuan Xie
- Department of Gastroenterology, The First Affiliated Hospital of Gannan Medical University, No. 23 Youth Road, Zhanggong District, Ganzhou, 341000, Jiangxi, People's Republic of China
| | - Xiao-Xiang Gu
- Department of Gastroenterology, The First Affiliated Hospital of Gannan Medical University, No. 23 Youth Road, Zhanggong District, Ganzhou, 341000, Jiangxi, People's Republic of China
| | - Hai-Yan Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Gannan Medical University, No. 23 Youth Road, Zhanggong District, Ganzhou, 341000, Jiangxi, People's Republic of China
| | - Li-Xing Huang
- Department of Gastroenterology, The First Affiliated Hospital of Gannan Medical University, No. 23 Youth Road, Zhanggong District, Ganzhou, 341000, Jiangxi, People's Republic of China
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Brožová V, Proćków J, Záveská Drábková L. Toward finally unraveling the phylogenetic relationships of Juncaceae with respect to another cyperid family, Cyperaceae. Mol Phylogenet Evol 2022; 177:107588. [PMID: 35907594 DOI: 10.1016/j.ympev.2022.107588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 08/06/2021] [Accepted: 07/11/2022] [Indexed: 11/29/2022]
Abstract
Juncaceae is a cosmopolitan family belonging to the cyperid clade of Poales together with Cyperaceae and Thurniaceae. These families have global economic and ethnobotanical significance and are often keystone species in wetlands around the world, with a widespread cosmopolitan distribution in temperate and arctic regions in both hemispheres. Currently, Juncaceae comprises more than 474 species in eight genera: Distichia, Juncus, Luzula, Marsippospermum, Oreojuncus, Oxychloë, Patosia and Rostkovia. The phylogeny of cyperids has not been studied before in a complex view based on most sequenced species from all three families. In this study, most sequenced regions from chloroplast (rbcL, trnL, trnL-trnF) and nuclear (ITS1-5.8S-ITS2) genomes were employed from more than a thousand species of cyperids covering all infrageneric groups from their entire distributional range. We analyzed them by maximum parsimony, maximum likelihood, and Bayesian inference to revise the phylogenetic relationships in Juncaceae and Cyperaceae. Our major results include the delimitation of the most problematic paraphyletic genus Juncus, in which six new genera are recognized and proposed to recover monophyly in this group: Juncus, Verojuncus, gen. nov., Juncinella, gen. et stat. nov., Alpinojuncus, gen. nov., Australojuncus, gen. nov., Boreojuncus, gen. nov. and Agathryon, gen. et stat. nov. For these genera, a new category, Juncus supragen. et stat. nov., was established. This new classification places most groups recognized within the formal Juncus clade into natural genera that are supported by morphological characters.
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Affiliation(s)
- Viktorie Brožová
- Department of Botany, Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760, 370 05 České Budějovice, Czech Republic
| | - Jarosław Proćków
- Department of Plant Biology, Institute of Environmental Biology, Wrocław University of Environmental and Life Sciences, ul. Kożuchowska 7a, 51-631 Wrocław, Poland
| | - Lenka Záveská Drábková
- Laboratory of Pollen Biology, Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Rozvojová 263, 165 02 Praha 6, Czech Republic.
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Cheek M, Onana JM, Chapman HM. The montane trees of the Cameroon Highlands, West-Central Africa, with Deinbollia onanae sp. nov. (Sapindaceae), a new primate-dispersed, Endangered species. PeerJ 2021; 9:e11036. [PMID: 33777527 PMCID: PMC7971092 DOI: 10.7717/peerj.11036] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/09/2021] [Indexed: 11/20/2022] Open
Abstract
We test the hypothesis that the tree species previously known as Deinbollia sp. 2. is a new species for science. We formally characterise and name this species as Deinbollia onanae (Sapindaceae-Litchi clade) and we discuss it in the context of the assemblage of montane tree species in the Cameroon Highlands of West-Central Africa. The new species is a shade-bearing, non-pioneer understorey forest tree species reaching 15 m high and a trunk diameter that can attain over 40 cm at 1.3 m above the ground. Seed dispersal has been recorded by chimpanzees (Pan troglodytes ellioti) and by putty-nose monkeys (Cercopithecus nictitans) and the species is used by chimpanzees for nesting. Cameroon has the highest species-diversity and species endemism known in this African-Western Indian Ocean genus of 42, mainly lowland species. Deinbollia onanae is an infrequent tree species known from six locations in surviving islands of montane (sometimes also upper submontane) forest along the line of the Cameroon Highlands, including one at Ngel Nyaki in Mambilla, Nigeria. Deinbollia onanae is here assessed as Endangered according to the IUCN 2012 standard, threatened by severe fragmentation of its mountain forest habitat due to extensive and ongoing clearance for agriculture. The majority of the 28 tree species of montane forest (above 2000 m alt.) in the Cameroon Highlands are also widespread in East African mountains (i.e. are Afromontane wide). Deinbollia onanae is one of only seven species known to be endemic (globally restricted to) these highlands. It is postulated that this new species is morphologically closest to Deinbollia oreophila, a frequent species at a lower (submontane) altitudinal band of the same range. Detailed ecological data on Deinbollia onanae from the Nigerian location, Ngel Nyaki, where it has been known under the name Deinbollia “pinnata”, is reviewed.
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Affiliation(s)
- Martin Cheek
- Department of Science, Royal Botanic Gardens, Kew, Richmond, Surrey, United Kingdom
| | - Jean Michel Onana
- Faculty of Science, Department of Plant Biology, University of Yaoundé I, Yaoundé, Centrale, Cameroon.,IRAD, IRAD-National Herbarium of Cameroon, Yaoundé, Centrale, Cameroon
| | - Hazel M Chapman
- School of Biological Sciences, University of Canterbury, Christchurch, Canterbury, New Zealand
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Schneider LJC, Gil ADSB. Diversity of Scleria (Cyperaceae) in Amazonian restinga in Pará state, Brazil. RODRIGUÉSIA 2020. [DOI: 10.1590/2175-7860202071101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract This study aims to contribute to the knowledge on the taxonomy of Scleria in sandy coastal plains (restinga) in Pará state, Brazil. Material deposited in the herbaria of Museu Paraense Emílio Goeldi (MG), Embrapa Amazônia Oriental (IAN), and Instituto de Estudos Costeiros da Universidade Federal do Pará (HBRA) were analyzed and species were identified using relevant literature, protologues, and types available online. We recorded nine species of Scleria for restinga in the state: Scleria bracteata, S. gaertneri, S. hirtella, S. interrupta, S. macrophylla, S. microcarpa, S. reticularis, S. secans, and S. violacea. An identification key, descriptions, illustrations, and comments about diagnostic characters and geographic distribution are provided for these species.
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Larridon I, Rabarivola L, Xanthos M, Muasya AM. Revision of the Afro-Madagascan genus Costularia (Schoeneae, Cyperaceae): infrageneric relationships and species delimitation. PeerJ 2019; 7:e6528. [PMID: 30834188 PMCID: PMC6397637 DOI: 10.7717/peerj.6528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 01/28/2019] [Indexed: 11/20/2022] Open
Abstract
A recent molecular phylogenetic study revealed four distinct evolutionary lineages in the genus Costularia s.l. (Schoeneae, Cyperaceae, Poales). Two lineages are part of the Oreobolus clade of tribe Schoeneae: the first being a much-reduced genus Costularia s.s., and the second a lineage endemic to New Caledonia for which a new genus Chamaedendron was erected. The other two lineages were shown to be part of the Tricostularia clade of tribe Schoeneae. Based on morphological and molecular data, the genus Costularia is here redelimited to represent a monophyletic entity including 15 species, which is restricted in distribution to southeastern Africa (Malawi, Mozambique, South Africa, Swaziland, Zimbabwe), Madagascar, the Mascarenes (La Réunion, Mauritius), and the Seychelles (Mahé). Molecular phylogenetic data based on two nuclear markers (ETS, ITS) and a chloroplast marker (trnL-F) resolve the studied taxa as monophyletic where multiple accessions could be included (except for Costularia laxa and Costularia purpurea, which are now considered conspecific), and indicate that the genus dispersed once to Africa, twice to the Mascarenes, and once to the Seychelles. Two endemic species from Madagascar are here described and illustrated as new to science, as is one additional species endemic to La Réunion. Two taxa previously accepted as varieties of Costularia pantopoda are here recognised at species level (Costularia baronii and Costularia robusta). We provide a taxonomic revision including an identification key, species descriptions and illustrations, distribution maps and assessments of conservation status for all species.
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Affiliation(s)
- Isabel Larridon
- Identification and Naming, Royal Botanic Gardens, Kew, Richmond, Surrey, UK.,Deparment of Biology, Systematic and Evolutionary Botany Lab, Ghent University, Gent, Belgium
| | | | - Martin Xanthos
- Identification and Naming, Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - A Muthama Muasya
- Department of Biological Sciences, Bolus Herbarium, University of Cape Town, Rondebosch, South Africa
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