Molecular Biology and Evolution, Vol 16, 1027-1036, Copyright © 1999 by Society for Molecular Biology and Evolution
T Nishiyama and M Kato
The basal relationship of bryophytes and tracheophytes is problematic in
land plant phylogeny. In addition to cladistic analyses of morphological
data, molecular phylogenetic analyses of the nuclear small-subunit
ribosomal RNA gene and the plastic gene rbcL have been performed, but no
confident conclusions have been reached. Using the maximum-likelihood (ML)
method, we analyzed 4,563 bp of aligned sequences from plastid
protein-coding genes and 1,680 bp from the nuclear 18S rRNA gene. In the ML
tree of deduced amino acid sequences of the plastid genes, hornworts were
basal among the land plants, while mosses and liverworts each formed a
clade and were sister to each other. Total-evidence evaluation of rRNA data
and plastid protein- coding genes by TOTALML had an almost identical
result.
ORIGINAL ARTICLE
Molecular phylogenetic analysis among bryophytes and tracheophytes based on combined data of plastid coded genes and the 18S rRNA gene
Department of Biological Sciences, Graduate School of Science, University of Tokyo, Japan. tomoaki@biol.s.u-tokyo.ac.jp
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