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J. Phycol. 35, 382394 (1999) EVOLUTION OF THE FUCACEAE (PHAEOPHYCEAE) INFERRED FROM nrDNA-ITS1
 

Summary: 382
J. Phycol. 35, 382394 (1999)
EVOLUTION OF THE FUCACEAE (PHAEOPHYCEAE) INFERRED FROM nrDNA-ITS1
Ester A. Serra~o,2 Lawrence A. Alice,3 and Susan H. Brawley4
Department of Plant Biology and Pathology, University of Maine, 5722 Deering Hall, Orono, Maine 04469-5722
Sequences of the internal transcribed spacer re-
gion (ITS-1, 5.8S, and ITS-2) of nuclear ribosomal
DNA were obtained from 16 species representing all
six genera of Fucaceae (Ascophyllum, Fucus, Hesper-
ophycus, Pelvetia, Pelvetiopsis, and Xiphophora) plus
one outgroup (Hormosira). Parsimony analysis indi-
cated that the family Fucaceae is monophyletic and
that the northern hemisphere taxa are highly diver-
gent from the only southern hemisphere genus,
Xiphophora. The genus Pelvetia is not monophyletic
because the European P. canaliculata is more closely
related to Fucus, Hesperophycus, and Pelvetiopsis than
to other Pelvetia species. We establish Silvetia, gen.
nov. and transfer the 3 Pacific species of Pelvetia to
the new genus. Fucus is monophyletic and not an-

  

Source: Alberto, Filipe - Centro de Ciencias do Mar, Universidade do Algarve

 

Collections: Environmental Sciences and Ecology; Biology and Medicine