Premium
MOLECULAR PHYLOGENETICS AND THE DINOFLAGELLATE CHLOROPLAST
Publication year - 2001
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.1529-8817.2001.jpy37303-34.x
Subject(s) - biology , phylogenetic tree , dinoflagellate , plastid , peridinin , chloroplast , phylogenetics , chloroplast dna , evolutionary biology , phylogenomics , molecular clock , monophyly , molecular phylogenetics , molecular evolution , gene , genetics , botany , clade , algae , fucoxanthin
Delwiche, C. F., and Bachvaroff, T. R. Cell Biology and Molecular Genetics, University of Maryland ‐ College Park MD 20742‐5815 USA The chloroplasts of dinoflagellates have been among the last chloroplasts to be studied with molecular phylogenetic methods. DNA sequences from peridinin‐containing chloroplasts are now available, and have begun to be examined with molecular phylogenetic methods. The high rate of sequence evolution in these genes increases noise and makes analyses difficult. We have evaluated phylogenetic signal in several dinoflagellate chloroplast genes using parametric bootstrapping and other methods. Although some aspects of the tree topologies found in phylogenetic analyses of dinoflagellate chloroplast genes are clearly artifactual, there are some features that seem to reflect genuine phylogenetic information. We find support for the concept of monophyletic chromophyte chloroplasts, but contradictory information concerning the relationships among the host cells that contain these plastids. The best hope for determining the evolutionary history of chromophytic plastids lies in the analysis of nuclear‐encoded, chloroplast expressed genes.