Sedum gypsicola Boiss. & Reut. is a Western Mediterranean endemism present on gypsum outcrops, and in a lesser extent on marshes, schists and calcareous rocks. A number of populations of this species are difficult to differentiate from S. album L. (Castroviejo & Velayos, 1997), plant species widely distributed in Europe. Despite S. gypsicola is not cataloged as endangered in Spain (LC), has a wide presence on a European Union priority habitat (1520* Gypsophiletalia). For this reason, a deeper study of this species would be of main interest for conservation. Considering this, the aims of our research were to:a) Establish species boundaries between S. gypsicola and S. album.b) Evaluate putative differentiation among populations and ecotypes, especially on gypsum outcrops, according to the edaphic island character that show this substrate and the challenges that this represents when is necessary to adopt conservation measures.To accomplish these objectives we resorted to the use of AFLP markers and nucleotide sequences (plastidial and ribosomal DNA). Up to five individuals per sampling site were analyzed thorough all European species distribution (Iberian Peninsula and south Italy). In addition to this, different populations from S. album near to S. gypsicola distribution were included in our analyses. Ribosomal analyses also included sequences available in NCBI database from other related species with Sedum series Alba.Preliminary results with AFLP markers and plastidial sequences showed a clear differentiation between localities from Italy and Iberian Peninsula ones, regardless whether they belonged to S. gypsicola or S. album. On the other hand, analyses with ribosomal sequences separated populations of S. gypsicola located in the South of the Iberian Peninsula from the rest of the populations of both species, which remained weakly differentiated. These results would involve the establishment of newer conservation strategies.
Species delimitation of Sedum series Alba (Crassulaceae), and conservation strategies of S. gypsicola / Salmerón-Sánchez, E.; Spampinato, G.; Musarella, Cm; Pérez-García, F. J.; Mendoza-Fernández, A.; Salinas-Navarro, M.; Mota, J. F.. - (2016). (Intervento presentato al convegno X INTERNATIONAL MEETING BIODIVERSITY CONSERVATION AND MANAGEMENT tenutosi a Villacidro nel 13-18 giugno 2016).
Species delimitation of Sedum series Alba (Crassulaceae), and conservation strategies of S. gypsicola
G. Spampinato;Musarella CM;
2016-01-01
Abstract
Sedum gypsicola Boiss. & Reut. is a Western Mediterranean endemism present on gypsum outcrops, and in a lesser extent on marshes, schists and calcareous rocks. A number of populations of this species are difficult to differentiate from S. album L. (Castroviejo & Velayos, 1997), plant species widely distributed in Europe. Despite S. gypsicola is not cataloged as endangered in Spain (LC), has a wide presence on a European Union priority habitat (1520* Gypsophiletalia). For this reason, a deeper study of this species would be of main interest for conservation. Considering this, the aims of our research were to:a) Establish species boundaries between S. gypsicola and S. album.b) Evaluate putative differentiation among populations and ecotypes, especially on gypsum outcrops, according to the edaphic island character that show this substrate and the challenges that this represents when is necessary to adopt conservation measures.To accomplish these objectives we resorted to the use of AFLP markers and nucleotide sequences (plastidial and ribosomal DNA). Up to five individuals per sampling site were analyzed thorough all European species distribution (Iberian Peninsula and south Italy). In addition to this, different populations from S. album near to S. gypsicola distribution were included in our analyses. Ribosomal analyses also included sequences available in NCBI database from other related species with Sedum series Alba.Preliminary results with AFLP markers and plastidial sequences showed a clear differentiation between localities from Italy and Iberian Peninsula ones, regardless whether they belonged to S. gypsicola or S. album. On the other hand, analyses with ribosomal sequences separated populations of S. gypsicola located in the South of the Iberian Peninsula from the rest of the populations of both species, which remained weakly differentiated. These results would involve the establishment of newer conservation strategies.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
