Abstract Detail

Biogeography

Valdés-Florido, Ana [1], Maguilla, Enrique [1], Arroyo, Juan [2], Escudero Lirio, Antonio Marcial [3].

Studying recent speciation with ongoing gene flow: A study case in Carex furva and Carex lucennoiberica (Cyperaceae)- .

The genus Carex L. (Cyperaceae) is one of the most diversified genera among Angiosperms, with about 2000 species. Phylogenetic and molecular studies of this genus suggest a recent radiation, that can be studied in detail to enlighten the evolutionary history of the genus. Previous studies, based on morphological and molecular data from 10 populations across the Iberian Peninsula, have recognised two different species within C. furva complex: C. furva and C. lucennoiberica. Carex lucennoiberica is an endemic species from high Mediterranean mountains in the Iberian Peninsula (Spain and Portugal). Carex furva is only distributed in Sierra Nevada, a high Mediterranean mountain in southern Spain. Both species only coexist in Sierra Nevada, which is an excellent area to study this group and its recent speciation process.
The aim of this study is to confirm the split of this species by means of morphological and molecular data (RADseq and cpDNA). To do so, we sampled 120 individuals of 18 populations from Sierra Nevada. Morphological characters of each individual were measured and RADseq markers and two plastid regions (atpIH and psbA-trnH) were obtained in order to reconstruct the evolutionary history of this species complex. Preliminary morphological and molecular data suggested two main groups, corresponding to C. furva and C. lucennoiberica, but also intermediate individuals in Sierra Nevada, that evidence historical gene flow during the speciation process.

1 - University of Seville, Plant Biology and Ecology, Reina Mercedes 6, 41012-Seville
2 - University Of Seville, Dept. Plant Biology And Ecology, Dept Biologia Vegetal Y Ecol, Univ De Sevilla/Aptdo 1095, Sevilla, SE, 41080, Spain
3 - UNIVERSITY OF SEVILLE, PLANT BIOLOGY AND ECOLOGY, Reina Mercedes Sn, Nº Q-4118001-I, Sevilla, 41012, Spain

Keywords:
none specified

Presentation Type: Poster
Session: P1, Biogeography Posters
Location: Virtual/Virtual
Date: Monday, July 19th, 2021
Time: 5:00 PM(EDT)
Number: P1BG006
Abstract ID:450
Candidate for Awards:None