Molecular phylogenies in angiosperm evolution
| Autor: | Henner Brinkmann, Heinz Saedler, Riidiger Cerff, G. Forkmann, Derek Lydiate, William Martin |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Chloroplasts
Ribulose-Bisphosphate Carboxylase Molecular Sequence Data Homology (biology) Magnoliids Gymnosperm Species Specificity Phylogenetics Sequence Homology Nucleic Acid Genetics RNA Messenger Molecular Biology Gene Phylogeny Ecology Evolution Behavior and Systematics Plant Proteins Base Sequence biology Phylogenetic tree fungi Nucleic acid sequence Glyceraldehyde-3-Phosphate Dehydrogenases food and beverages myr DNA Plants biology.organism_classification Poly A Sequence Alignment |
| Zdroj: | ResearcherID |
| ISSN: | 1537-1719 |
| DOI: | 10.1093/oxfordjournals.molbev.a039989 |
| Popis: | We have cloned and sequenced cDNAs for the glyceraldehyde-3-phosphate dehydrogenase of glycolysis, gapC, from a bryophyte, a gymnosperm, and three angiosperms. Phylogenetic analyses are presented for these data in the context of other gapC sequences and in parallel with published nucleotide sequences for the chloroplast encoded gene for the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (rbcL). Relative-rate tests were performed for these genes in order to assess variation in substitution rate for coding regions, along individual plant lineages studied. The results of both gene analyses suggest that the deepest dichotomy within the angiosperms separates not magnoliids from remaining angiosperms, but monocotyledons from dicotyledons, in sharp contrast to prediction from the Euanthial theory for angiosperm evolution. Furthermore, these chloroplast and nuclear sequence data taken together suggest that the separation of monocotyledonous and dicotyledonous lineages took place in late Carboniferous times [approximately 300 Myr before the present (Mybp)]. This date would exceed but be compatible with the late-Triassic (approximately 220 Mybp) occurrence of fossil reproductive structures of the primitive angiosperm Sanmiguelia lewisii. |
| Databáze: | OpenAIRE |
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