Molecular Biology and Evolution, Vol 7, 303-314, Copyright © 1990 by Society for Molecular Biology and Evolution
MA Wilson, B Gaut and MT Clegg
A survey of cpDNA restriction-site variation for 22 species representing
five of the six subfamilies of the palm family was conducted. Phylogenetic
reconstructions based on the restriction-site data are in general agreement
with conventional analyses based on morphological characters.
Base-substitution estimates, derived from the restriction-site data,
indicate a potential 5-13-fold decrease in substitution rates within the
palms relative to rate estimates for annual plant taxa. Approximately 1,000
bp of the rbcL gene (ribulose- 1,5-bisphosphate carboxylase, large subunit)
were sequenced from species representing two subfamilies of the palms. The
complete DNA sequence data are in accord with the restriction-site data and
indicate a total rate of nucleotide substitution that is about eightfold
lower than that observed for annual plants.
ORIGINAL ARTICLE
Chloroplast DNA evolves slowly in the palm family (Arecaceae)
Department of Botany and Plant Sciences, University of California, Riverside 92521.
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