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The Limitations of molecular markers in phylogenetic reconstruction: the case of Centaurea sect. Phrygia (Compositae)

Lopez-Alvarado, Javier and Saez, Llorenç and Filigheddu, Rossella Speranza and García Jacas, Núria and Susanna, Alfonso (2014) The Limitations of molecular markers in phylogenetic reconstruction: the case of Centaurea sect. Phrygia (Compositae). Taxon, Vol. 63 (5), p. 1079-1091. ISSN 0040-0262. eISSN 1996-8175. Article.

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DOI: 10.12705/635.6

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Abstract

In this paper we seek to elucidate the phylogeny of Centaurea sect. Jacea and sect. Phrygia (= sect. Lepteranthus nom. inval.) which have long been a source of controversy. A molecular phylogenetic approach is used based on nrDNA and plastid markers. The study confirmed incongruence between datasets, which can be explained both by hybridization and the occurrence of shared ancestral polymorphisms. Both factors are critical in limiting the resolution of phylogenetic trees. Despite this, we provide an interpretation of the current European distribution of sect. Phrygia, and suggest a probable eastern center of origin for the section. Our results support previous studies in Centaurea, suggesting on molecular grounds that sect. Phrygia and sect. Jacea can not be clearly separated, particularly when C. nigra s.l. or C. jacea s.l. coexist with other taxa of sect. Phrygia and sect. Jacea.

Item Type:Article
ID Code:10508
Status:Published
Refereed:Yes
Uncontrolled Keywords:Centaurea, Lepteranthus, molecular phylogeny, Phrygia, systematics
Subjects:Area 05 - Scienze biologiche > BIO/03 Botanica ambientale e applicata
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze della Natura e del Territorio
Publisher:International Association for Plant Taxonomy
ISSN:0040-0262
eISSN:1996-8175
Deposited On:03 Dec 2014 08:46

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