2026-06-28T10:26:22Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/955062024-12-04T00:54:18Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Arnelas Seco, Itziar
author
Pérez Collazos, Ernesto
author
Devesa, Juan Antonio
author
López Nieto, Eusebio
author
Catalán Alonso, Pilar
2024-01-25T14:59:02Z
2024-01-25T14:59:02Z
2018
Arnelas, I., E. Pérez-Collazos, J.A. Devesa, E. López-Nieto & P. Catalán. 2018. Phylogeny of highly hybridogenous Iberian Centaurea L. (Asteraceae) taxa and its taxonomic implications. Plant Biosystems-An International Journal Dealing with all Aspects of Plant Biology, 152(5): 1182-1190
1126-3504
10.1080/11263504.2018.1435569
https://hdl.handle.net/20.500.14352/95506
1724-5575
https://doi.org/10.1080/11263504.2018.1435569
Centaurea is one of the richest but less investigated genera of tribe Cardueae (Asteraceae). We reconstructed an updated phylogeny of Iberian species of Centaurea sects. Centaurea, Jacea, Lepteranthus and Phalolepis by sampling representatives from 48 taxa (~60% of the taxonomic variation). Phylogenetic trees and haplotypic networks were based on ITS and trnLF sequences, and Bayesian dating analysis on ITS data. We found two main lineages within this monophyletic group: (1) a W Mediterranean Centaurea and Phalolepis plus C. diffusa (CP) clade; and (2) an E Mediterranean – Eurosiberian Jacea and Lepteranthus (JL) clade. Our analyses provide new reconstructions for species of C. sects. Jacea and Lepteranthus that support new taxonomic circumscriptions. The inferred divergence times indicated succesive splits of the CP and JL lineages during the Miocene (e.g. CP/JL, Serravalian; Jacea/Lepteranthus, Tortonian; C. hyssopifolia, C. gr. janeri, C. gr. exarata, Messinian) and the Pliocene (C. linifolia/C. antennata). Interspecific hybridizations and polyploidizations likely took place during the Pleistocene (1.5–0.7 Ma) interglacials, when several hybrid lineages apparently originated (e.g. C. x decipiens). Allopatric speciation probably played an important role in the diversification of the Iberian Centaurea taxa, since the origins of several endemic species occurred during mid-late Pleistocene times (2.2–1.3 Ma) in several disjunct Iberian ranges.
eng
Phylogeny of highly hybridogenous Iberian Centaurea L. (Asteraceae) taxa and its taxonomic implications.
journal article
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URL
https://docta.ucm.es/bitstreams/68346395-d298-4d03-a4cd-384ffbd2019d/download
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a459eda35a5f575d299e71e06f48f5c0
4427725
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Phylogeny.pdf