Phylogeographical Analyses of a Relict Fern of Palaeotropical Flora (Vandenboschia speciosa): Distribution and Diversity Model in Relation to the Geological and Climate Events of the Late Miocene and Early Pliocene
Metadatos
Afficher la notice complèteAuteur
Ben-Menni Schuler, Samira; Blanca López, Gabriel; Romero García, Ana Teresa; Suárez Santiago, VíctorEditorial
MDPI
Materia
Fern phylogeography gapCp gene Palaeotropical flora Plastid DNA Refugia Relict fern Species distribution modelling Tertiary Vandenboschia speciosa
Date
2022-03-22Referencia bibliográfica
Ben-Menni Schuler, S... [et al.]. Phylogeographical Analyses of a Relict Fern of Palaeotropical Flora (Vandenboschia speciosa): Distribution and Diversity Model in Relation to the Geological and Climate Events of the Late Miocene and Early Pliocene. Plants 2022, 11, 839. [https://doi.org/10.3390/plants11070839]
Patrocinador
Spanish Government European Commission; (Erasmus Mundus-Al Idrisi II scholarship) from the European Union - Regional Andalusian Government P10-RNM-6198Résumé
Fern phylogeographic studies have mostly focused on the influence of the Pleistocene climate
on fern distributions and the prevalence of long-distance dispersal. The effect of pre-Pleistocene
events on the distributions of fern species is largely unexplored. Here, we elucidate a hypothetical scenario
for the evolutionary history of Vandenboschia speciosa, hypothesised to be of Tertiary palaeotropical
flora with a peculiar perennial gametophyte. We sequenced 40 populations across the species
range in one plastid region and two variants of the nuclear gapCp gene and conducted time-calibrated
phylogenetic, phylogeographical, and species distribution modelling analyses. Vandenboschia speciosa
is an allopolyploid and had a Tertiary origin. Late Miocene aridification possibly caused the long persistence
in independent refugia on the Eurosiberian Atlantic and Mediterranean coasts, with the independent
evolution of gene pools resulting in two evolutionary units. The Cantabrian Cornice, a major
refugium, could also be a secondary contact zone during Quaternary glacial cycles. Central European
populations resulted from multiple post-glacial, long-distance dispersals. Vandenboschia speciosa
reached Macaronesia during the Pliocene–Pleistocene, with a phylogeographical link between the
Canary Islands, Madeira, and southern Iberia, and between the Azores and northwestern Europe.
Our results support the idea that the geological and climate events of the Late Miocene/Early Pliocene
shifted Tertiary fern distribution patterns in Europe.