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PHYLOGENY OF GRACILARIA LEMANEIFORMIS (RHODOPHYTA) BASED ON SEQUENCE ANALYSIS OF ITS SMALL SUBUNIT RIBOSOMAL RNA CODING REGION 1
Author(s) -
Bhattacharya Debashish,
Elwood Hille J.,
Goff Lynda J.,
Sogin Mitchell L.
Publication year - 1990
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.0022-3646.1990.00181.x
Subject(s) - biology , ribosomal rna , algae , protist , red algae , gracilaria , polyphyly , protein subunit , plastid , botany , coding region , phylogenetics , genetics , gene , clade , chloroplast
ABSTRACT The small subunit ribosomal RNA (rRNA) sequence of Gracilaria lemaneiformis Bory Weber‐van Bosse was inferred from analysis of rRNA coding regions that were amplified by the polymerase chain reaction method. Comparison of the G. lemaneiformis small subunit rRNA to homologous genes of diverse eukaryotes demonstrated that the red algal divergence was nearly simultaneous with the separation of plants, fungi, animals and many other protist lineages. This result conflicts with those of 5S rRNA sequence and plastid based phytogenies which suggest that red algae represent an early divergence in the eukaryotic line of descent. Further, algae appear to be of polyphyletic origin and red algae are unrelated to higher fungi.