PHYLOGENETIC-RELATIONSHIPS OF 4 CHAROPHYCEAN GREEN-ALGAE INFERRED FROM COMPLETE NUCLEAR-ENCODED SMALL-SUBUNIT RIBOSOMAL-RNA GENE-SEQUENCES

被引:36
作者
WILCOX, LW
FUERST, PA
FLOYD, GL
机构
[1] OHIO STATE UNIV,DEPT PLANT BIOL,COLUMBUS,OH 43210
[2] OHIO STATE UNIV,DEPT MOLEC GENET,COLUMBUS,OH 43210
关键词
D O I
10.2307/2445750
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Complete nuclear-encoded (18S) small subunit rRNA gene sequences were determined for four charophycean green algae, Chlorokybus atmophyticus, Coleochaete orbicularis, Klebsormidium flaccidum, and Nitella sp. Chlorokybus atmophyticus and Coleochaete orbicularis have been previously suggested to represent the most basal and most derived taxa within the charophytes, respectively. However, parsimony analysis of our 18S rDNA sequences along with a selection of other complete green algal and land plant 18S rDNA sequences yields a gene tree topology in which Chlorokybus is the most basal taxon, followed by the branching of Coleochaete and Klebsormidium. Two ''sister'' clades then diverge, one including Nitella and the land plants, and the second. members of the Chlorophyceae and Pleurastrophyceae. Despite producing slightly different gene tree topologies than those inferred from parsimony, distance analyses of the 18S rDNA sequences also do not indicate a strong affinity between the land plants and Cleochaete. Rather, Klebsormidium and Coleochaete are virtually equidistant from the land plant taxa. Other data are needed in order to assess the unexpected findings reported here, particularly the position of Coleochaete.
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页码:1028 / 1033
页数:6
相关论文
共 35 条
[1]   EVOLUTIONARY TRANSFER OF THE CHLOROPLAST TUFA GENE TO THE NUCLEUS [J].
BALDAUF, SL ;
PALMER, JD .
NATURE, 1990, 344 (6263) :262-265
[2]   DIFFERENT FATES OF THE CHLOROPLAST TUFA GENE FOLLOWING ITS TRANSFER TO THE NUCLEUS IN GREEN-ALGAE [J].
BALDAUF, SL ;
MANHART, JR ;
PALMER, JD .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1990, 87 (14) :5317-5321
[3]   ON CLADISTIC RELATIONSHIPS IN GREEN PLANTS [J].
BREMER, K ;
HUMPHRIES, CJ ;
MISHLER, BD ;
CHURCHILL, SP .
TAXON, 1987, 36 (02) :339-349
[4]  
CABOT EL, 1989, COMPUT APPL BIOSCI, V5, P233
[5]   RIBOSOMAL-RNA GENE-SEQUENCES - ANALYSIS AND SIGNIFICANCE IN THE PHYLOGENY AND TAXONOMY OF GREEN-ALGAE [J].
CHAPMAN, RL ;
BUCHHEIM, MA .
CRITICAL REVIEWS IN PLANT SCIENCES, 1991, 10 (04) :343-368
[6]   HIGHER-PLANT ORIGINS AND THE PHYLOGENY OF GREEN-ALGAE [J].
DEVEREUX, R ;
LOEBLICH, AR ;
FOX, GE .
JOURNAL OF MOLECULAR EVOLUTION, 1990, 31 (01) :18-24
[7]   COMPARISON OF THE NUCLEOTIDE-SEQUENCE OF SOYBEAN 18S RIBOSOMAL-RNA WITH THE SEQUENCES OF OTHER SMALL-SUBUNIT RIBOSOMAL-RNAS [J].
ECKENRODE, VK ;
ARNOLD, J ;
MEAGHER, RB .
JOURNAL OF MOLECULAR EVOLUTION, 1985, 21 (03) :259-269
[8]   PHYLOGENIES FROM MOLECULAR SEQUENCES - INFERENCE AND RELIABILITY [J].
FELSENSTEIN, J .
ANNUAL REVIEW OF GENETICS, 1988, 22 :521-565
[9]  
FELSESTEIN J, 1990, PHYLIP MANUAL VERSIO
[10]   SUBCELLULAR STRUCTURES OF RELEVANCE TO THE ORIGIN OF LAND PLANTS (EMBRYOPHYTES) FROM GREEN-ALGAE [J].
GRAHAM, LE ;
KANEKO, Y .
CRITICAL REVIEWS IN PLANT SCIENCES, 1991, 10 (04) :323-342