African Mountain Thistles : Three New Genera in the Carduus-Cirsium Group
Moreyra, Lucía D. (Institut Botànic de Barcelona)
Garcia-Jacas, Núria (Institut Botànic de Barcelona)
Roquet, Cristina (Universitat Autònoma de Barcelona)
Ackerfield, Jennifer R. (Colorado State University. Department of Biology)
Arabacı, Turan (Inönü University. Department of Pharmaceutical Botany)
Blanco-Gavaldà, Carme (Universitat Autònoma de Barcelona)
Brochmann, Christian (University of Oslo. Natural History Museum)
Calleja, Juan Antonio (Universidad Autónoma de Madrid. Centro de Investigación en Biodiversidad y Cambio Global)
Dirmenci, Tuncay (Balıkesir University. Department of Biology)
Fujikawa, Kazumi (Kochi Prefectural Makino Botanical Garden)
Galbany-Casals, Mercè (Universitat Autònoma de Barcelona)
Gao, Tiangang (Chinese Academy of Sciences. State Key Laboratory of Systematic and Evolutionary Botany)
Gizaw, Abel (Addis Ababa University. Department of Plant Biology and Biodiversity Management)
López-Alvarado, Javier (Universitat Autònoma de Barcelona)
Mehregan, Iraj (Islamic Azad University. Department of Biology, Science and Research Branch)
Vilatersana, Roser (Institut Botànic de Barcelona)
Yıldız, Bayram (Ismail Cem Street)
Leliaert, Frederik (Meise Botanic Garden)
Seregin, Alexey P. (M. V. Lomonosov Moscow State University)
Susanna, Alfonso (Institut Botànic de Barcelona)

Data:	2023
Resum:	The floras on the highest mountains in tropical eastern Africa are among the most unique floras in the world. Despite the exceptionally high concentration of endemic species, these floras remain understudied from an evolutionary point of view. In this study, we focus on the Carduus-Cirsium group (subtribe Carduinae) to unravel the evolutionary relationships of the species endemic to the tropical Afromontane and Afroalpine floras, aiming to improve the systematics of the group. We applied the Hyb-Seq approach using the Compositae1061 probe set on 190 samples (159 species), encompassing representatives of all genera of Carduinae. We used two recently developed pipelines that enabled the processing of raw sequence reads, identification of paralogous sequences and segregation into orthologous alignments. After the implementation of a missing data filter, we retained sequences from 986 nuclear loci and 177 plastid regions. Phylogenomic analyses were conducted using both concatenated and summary-coalescence methods. The resulting phylogenies were highly resolved and revealed three distinct evolutionary lineages consisting of the African species traditionally referred to as Carduus and Cirsium. Consequently, we propose the three new genera Afrocarduus, Afrocirsium and Nuriaea ; the latter did notably not belong to the Carduus - Cirsium group. We detected some incongruences between the phylogenies based on concatenation vs. coalescence and on nuclear vs. plastid datasets, likely attributable to incomplete lineage sorting and/or hybridization.
Ajuts:	Agencia Estatal de Investigación PID2019-105583GB-C21 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00315
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Afroalpine ; Afromontane ; Carduinae ; Carduus-Cirsium group ; Hyb-Seq ; Systematics
Publicat a:	Plants, Vol. 12, Issue 17 (August 2023) , art. 3083, ISSN 2223-7747

DOI: 10.3390/plants12173083
PMID: 37687332

22 p, 4.6 MB

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