Morphological and Genome-Wide Evidence of Homoploid Hybridisation in Urospermum (Asteraceae)

Autor: Jaume Pellicer, Manica Balant, Pol Fernández, Roi Rodríguez González, Oriane Hidalgo
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Plants, Vol 11, Iss 2, p 182 (2022)
Druh dokumentu: article
ISSN: 2223-7747
DOI: 10.3390/plants11020182
Popis: The genus Urospermum is distributed in the Mediterranean region and Macaronesia, and has been introduced to other extra-Mediterranean regions. Although the two species constituting the genus, U. dalechampii and U. picroides, are frequently found together, hybrids have so far only been reported once, from Morocco. However, we found certain individuals in Catalonia, whose intermediate morphology suggested a potential hybrid origin. In this study, we applied morphological and molecular methods to investigate the origin of those individuals. Intermediate features at phenotype, karyological, cytogenetic, and genomic levels were identified in morphologically intermediate individuals, supporting their homoploid hybrid origin. Chloroplast sequence data suggest that U. dalechampii is the maternal progenitor of the hybrid. Together with the intermediate traits displayed, the lack of fertile seeds suggests that hybrids are probably F1. Future monitoring studies will be, nonetheless, needed to evaluate the extent of hybridisation and its potential impact on the biology of the genus.
Databáze: Directory of Open Access Journals