Premium
MOLECULAR PHYLOGENETIC ANALYSIS OF rbc L IN THE PRYMNESIOPHYTA 1
Author(s) -
Fujiwara Shoko,
Sawada Mitsuhiro,
Someya Junichiro,
Minaka Nobuhiro,
Kawachi Masanobu,
Inouye Isao
Publication year - 1994
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.0022-3646.1994.00863.x
Subject(s) - biology , monophyly , phylogenetic tree , botany , emiliania huxleyi , maximum parsimony , sister group , rubisco , clade , genetics , gene , ecology , photosynthesis , phytoplankton , nutrient
The nucleotide sequences of rbc L genes encoding the large subunit of ribulose‐1,5‐bisphosphate carboxylase/oxygenase (Rubisco) were determined from six species of Prymnesiophyta to clarify their phylogenetic relationships. Molecular phylogenetic trees were constructed using PAUP (Phylogenetic Analysis Using Parsimony). These analyses suggest that the Prymnesiophyta, except for the Pavlovales, area relatively stable monophyletic group. Pleurochrysis carterae , included in the Isochrysidales, is a sister species of a monophyletic group consisting of other members of the Isochrysidales, Gephyrocapsa oceanica and Emiliania huxleyi , members of the Coccosphaerales, Calyptrosphaera sphaeroidea and Umbilicosphaera sibogae var. foliosa , and a member of the Prymnesiales, Chrysochromulina hirta. The nucleotide sequence of rbc L from G. oceanica was identical to that from E. huxleyi within the region examined. Our trees show that G. oceanica and E. huxleyi are more closely related to C. hirta than to U. sibogae, C. sphaeroidea , and P. carterae. These results suggest that orders in the Prymnesiophyceae, including the above‐mentioned genera, should be redefined.