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Abstract Detail


Molecular Ecology and Evolution

Guarino, Carmine [1], Santoro, Simona [1], De Simone, Luciana [1].

Ecological and genetic differentiation among closely related species in the Mediterranean: Centaurea L. sect. Dissectae (Compositae).

Depending on the classification adopted (Dostál,1976; Pignatti and Lausi, 1982) Centaurea L. subgenus Acrolophus (Compositae, tribe Cardueae) sect. Dissectae (Hayek) Dostál comprises between 2 and 4 species with various subspecies and forms. Pignatti and Lausi (1982) ascribed to this section the following species, all endemic to southern and central Italy: a) Centaurea parlatoris Heldr. recorded in Sicily, b) Centaurea tenorei Guss. ex Lacaita found in Campania on the Sorrento peninsula, c) Centaurea scannensis Anzal. occurring in Abruzzo in the Sagittario george between Scanno and Anversa, d) Centaurea ambigua Guss. s.l. recorded on the mountains from the Apuan Alps and the Tuscan-Emilian Appennines to Abruzzo and Matese. The Author investigated the genetic variation and population differentiation by a combined study of nuclear and chloroplast DNA analysis. In fact, a total of 378 individuals belonging to the four species, above described, were genotyped for seven polymorphic microsatellite loci and the chloroplast DNA gene matK. The aim of this study is to explore the evolution of endemism of the Mediterranean plants by an appreciation of levels of population diversity and differentiation. This question is of particular importance because differentiation is the template on which endemic species divergence occurs.


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1 - University of Sannio, of Biological and Enviromental Sciences, Via Port'Arsa, 11, Benevento, Italy, 82100, Italy

Keywords:
Centaurea L.
nuclear and chloroplast DNA analysis
Genetic markers.

Presentation Type: Oral Paper:Papers for Topics
Session: CP41
Location: Boulevard B/Hilton
Date: Wednesday, July 11th, 2007
Time: 9:00 AM
Number: CP41005
Abstract ID:82


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