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A discussion about reproductive modes of Pseudevernia furfuracea based on phylogenetic data

Published online by Cambridge University Press:  03 June 2010

Zuzana FERENCOVA
Affiliation:
Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
Ruth DEL PRADO
Affiliation:
Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
Israel PÉREZ-VARGAS
Affiliation:
Departamento de Biología Vegetal, Facultad de Farmacia, Universidad de La Laguna, E-38071, La Laguna, Tenerife, Canary Islands, Spain.
Consuelo HERNÁNDEZ-PADRÓN
Affiliation:
Departamento de Biología Vegetal, Facultad de Farmacia, Universidad de La Laguna, E-38071, La Laguna, Tenerife, Canary Islands, Spain.
Ana CRESPO*
Affiliation:
Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, E-28040 Madrid, Spain.

Abstract

Two asexual reproductive strategies of the common lichen Pseudevernia furfuracea are described. Although the species propagates mainly by isidia, some specimens also show the development of soralia. Morphological, chemical and molecular analyses were performed on three such sorediate specimens from the Canary Islands, Morocco and Turkey. Maximum parsimony, maximum likelihood and Bayesian analyses indicate that: a) sorediate samples represent only a morphological variant of the reproductive mode and b) the separation of taxa (at species level or below) on the basis of their containing either olivetoric acid or physodic and oxyphysodic acids is not appropriate. In addition, a phylogenetic reconstruction of the genus Pseudevernia is presented for the first time. The tree shows two sister monophyletic clades, one containing American species (P. intensa, P. cladonia, P. consocians), and the second encompassing the P. furfuracea samples (including sorediate specimens). The biological and taxonomic significance of soralia in sorediate samples is discussed.

Type
Research Article
Copyright
Copyright © British Lichen Society 2010

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