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Ocean crossers: A tale of disjunctions and speciation in the dwarf-fruticose Lichina (lichenized Ascomycota)

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Ocean crossers: A tale of disjunctions and speciation in the dwarf-fruticose Lichina (lichenized Ascomycota)

dc.contributor.author	Garrido Benavent, Isaac
dc.contributor.author	Ríos Murillo, Asunción de los
dc.contributor.author	Núñez Zapata,Jano
dc.contributor.author	Ortiz Álvarez, Rüdiger
dc.contributor.author	Schultz, Matthias
dc.contributor.author	Pérez Ortega, Sergio
dc.date.accessioned	2023-10-19T07:08:59Z
dc.date.available	2023-10-19T07:08:59Z
dc.date.issued	2023
dc.identifier.citation	Garrido Benavent, I. Ríos Murillo, Asunción de los Núñez Zapata,Jano Ortiz Álvarez, Rüdiger Schultz, Matthias Pérez Ortega, Sergio 2023 Ocean crossers: A tale of disjunctions and speciation in the dwarf-fruticose Lichina (lichenized Ascomycota) Molecular Phylogenetics and Evolution 185 107829 1 13
dc.identifier.uri	https://hdl.handle.net/10550/90487
dc.description.abstract	Lichens thrive in rocky coastal areas in temperate and cold regions of both hemispheres. Species of the genus Lichina, which form characteristic black fruiting thalli associated with cyanobacteria, often create distinguishable bands in the intertidal and supralittoral zones. The present study uses a comprehensive specimen dataset and four gene loci to (1) delineate and discuss species boundaries in this genus, (2) assess evolutionary relationships among species, and (3) infer the most likely causes of their current geographic distribution in the Northern and Southern hemispheres. A dated phylogeny describes the time frame in which extant disjunctions of species and populations were established. The results showed that the genus is integrated by four species, with Lichina pygmaea, L. confinis and the newly described L. canariensis from rocky seashores in the Canary Islands, occurring in the Northern Hemisphere, whereas L. intermedia is restricted to the Southern Hemisphere. Lichina intermedia hosted a much higher intraspecific genetic diversity than the other species, with subclades interpreted as species-level lineages by the different species delimitation approaches. However, a conservative taxonomic approach was adopted. This species showed a striking disjunct distribution between Australasia and southern South America. The timing for the observed interspecific and intraspecific divergences and population disjunctions postdated continental plate movements, suggesting that long-distance dispersal across body waters in the two hemispheres played a major role in shaping the current species distributions. Such ocean crossings were, as in L. canariensis, followed by speciation. New substitution rates for the nrITS of the genus Lichina were inferred using a tree spanning the major Ascomycota lineages calibrated using fossils. In conclusion, this work lays the foundation for a better understanding of the evolution through time and space of maritime lichens.
dc.language.iso	eng
dc.relation.ispartof	Molecular Phylogenetics and Evolution, 2023, vol. 185, num. 107829, p. 1-13
dc.subject	Botànica
dc.subject	Biologia aquàtica
dc.subject	Mar
dc.title	Ocean crossers: A tale of disjunctions and speciation in the dwarf-fruticose Lichina (lichenized Ascomycota)
dc.type	journal article
dc.date.updated	2023-10-19T07:08:59Z
dc.identifier.doi	10.1016/j.ympev.2023.107829
dc.identifier.idgrec	161453
dc.rights.accessRights	open access