ISSN:
1615-6110
Keywords:
Seed plants
;
molecular phylogeny
;
chloroplast DNA
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Fifty-eight homologous protein sequences from the completely sequenced chloroplast genomes ofZea mays, Oryza sativa, Nicotiana tabacum, Pinus thunbergii, Marchantia polymorpha andPoryphyra purpurea were investigated. Analyzed individually, only 40 of the 58 proteins gave the true, known topology for these species. Trees constructed from the concatenated 14295 amino acid alignment and from automatically generated subsets of the data containing successively fewer polymorphisms were used to estimate theNicotiana-Zea andPinus-angiosperm divergence times as 160 and 348 million years, respectively, with an uncertainty of about 10%. These estimates based upon phylogenetic analysis of protein data from complete chloroplast genomes are in much better accordance with current interpretations of fossil evidence than previous molecular estimates.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00987956
