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- Title
PHYLOGENETIC AND TAXONOMIC REASSESSMENT OF THE DELESSERIACEAE (CERAMIALES, RHODOPHYTA) BASED ON TWO MOLECULAR DATA SETS.
- Authors
Lin, S. M.; Fredericq, S.; Hommersand, M.
- Abstract
The current system of classification of the Delesseriaceae rests largely on Kylin's treatment which encompass the subfamilies Delesserioideae with five ‘Groups’ and Nitophylloideae with six ‘Groups’. In this study we test the Kylin system based on phylogenetic analyses inferred from two molecular data sets and morphological evidence. A total of 145 delesseriacean taxa worldwide were sequenced for chloroplast-encoded rbcL, and 82 taxa for the nuclear-encoded large subunit ribosomal RNA gene (LSU). Three large clades are identified in the combined data sets, one of which corresponds to the Delesserioideae, one to a narrowly circumscribed Nitophylloideae, and the third to a new subfamily comprising the remainder of the Nitophylloideae sensu Kylin. Belonging to the Delesserioideae are an expanded Hemineura group that includes Hemineura, Patulophycus, Marionella, Laingia, Botryocarpa and possibly Pseudophycodrys, a Caloglossa group, a Hypoglossum group that includes Hypoglossum, Branchioglossum, Bartoniella, Zellera, Phitymorphora, and Chauviniella, a Delesseria group with Delesseria, Membranoptera and possibly Grinnellia (but not Apoglossum) and most southern hemisphere species of Delesseria which are properly placed in Paraglossum J. Agardh 1898. The revised Nitophylloideae contains Nitophyllum, Valeriemaya, Polyneuropsis, Calonitophyllum and also Martensia and Opephyllum. The unnamed subfamily includes the Phycodrys group with Phycodrys and Polyneura, the Cryptopleura group with species placed in Cryptopleura, Hymenena, Acrosorium and Botryoglossum, the Myriogrammeae with Myriogramme and Haraldiophyllum, and the Schizoserideae with Schizoseris, Neuroglossum, Drachiella, Abroteia, and South American species of Platyclinia. This research promotes the correlation of molecular and morphological phylogenies with biogeographic hypotheses for the family.
- Subjects
DELESSERIACEAE; CERAMIALES; RED algae; PHYLOGENY
- Publication
Journal of Phycology, 2000, Vol 36, p44
- ISSN
0022-3646
- Publication type
Article
- DOI
10.1046/j.1529-8817.1999.00001-131.x