A molecular phylogeny of the marine red algae (Rhodophyta) based on the nuclear small-subunit rRNA gene

Ragan M.A., Bird C.J., Rice E.L., Gutell R.R., Murphy C.A. and Singh R.K. (1994) A molecular phylogeny of the marine red algae (Rhodophyta) based on the nuclear small-subunit rRNA gene. Proceedings of the National Academy of Sciences of the United States of America, 91 15: 7276-7280. doi:10.1073/pnas.91.15.7276


Author Ragan M.A.
Bird C.J.
Rice E.L.
Gutell R.R.
Murphy C.A.
Singh R.K.
Title A molecular phylogeny of the marine red algae (Rhodophyta) based on the nuclear small-subunit rRNA gene
Journal name Proceedings of the National Academy of Sciences of the United States of America   Check publisher's open access policy
ISSN 0027-8424
Publication date 1994-07-19
Year available 1994
Sub-type Article (original research)
DOI 10.1073/pnas.91.15.7276
Open Access Status Not yet assessed
Volume 91
Issue 15
Start page 7276
End page 7280
Total pages 5
Place of publication WASHINGTON
Publisher NATL ACAD SCIENCES
Language eng
Subject 1311 Genetics
1000 General
Abstract A phylogeny of marine Rhodophyta has been inferred by a number of methods from nucleotide sequences of nuclear genes encoding small subunit rRNA from 39 species in 15 orders. Sequence divergences are relatively large, especially among bangiophytes and even among congeners in this group. Subclass Bangiophycidae appears polyphyletic, encompassing at least three lineages, with Porphyridiales distributed between two of these. Subclass Florideophycidae is monophyletic, with Hildenbrandiales, Corallinales, Ahnfeltiales, and a close association of Nemaliales, Acrochaetiales, and Palmariales forming the four deepest branches. Ceramiales may represent a convergence of vegetative and reproductive morphologies, as family Ceramiaceae is at best weakly related to the rest of the order, and one of its members appears to be allied to Gelidiales. Except for Gigartinales, for which more data are required, the other florideophyte orders appear distinct and taxonomically justified. A good correlation was observed with taxonomy based on pit-plug ultrastructure. Tests under maximum-likelihood and parsimony of alternative phylogenies based on structure and chemistry refuted suggestions that Acrochaetiales is the most primitive florideophyte order and that Gelidiales and Hildenbrandiales are sister groups.
Keyword Bangiophycidae
Florideophycidae
Kishino-Hasegawa test
taxonomy
Templeton-Felsenstein test
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID GM 48207
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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