Molecular Phylogeny of Tribe Theeae (Theaceae s.s.) and Its Implications for Generic Delimitation
| Autor: | Hong Zhao, Sheng-long Kan, Xiao-Quan Wang, Zhenyu Li, Wei Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Paraphyly
Plant Phylogenetics Pyrenaria DNA Plant Theaceae lcsh:Medicine Apterosperma Plant Science Genes Plant Monophyly Polyphyly Molecular Systematics Botany Evolutionary Systematics lcsh:Science Molecular Biology Techniques Sequencing Techniques Molecular Biology Phylogeny Taxonomy Plant Proteins Cell Nucleus Evolutionary Biology Likelihood Functions Multidisciplinary Ploidies Phylogenetic tree biology Models Genetic Fossils lcsh:R DNA Chloroplast Biology and Life Sciences Computational Biology Genetic Variation Plant Taxonomy Bayes Theorem Sequence Analysis DNA biology.organism_classification Phylogenetics Molecular phylogenetics Hybridization Genetic lcsh:Q Sequence Analysis Research Article |
| Zdroj: | PLoS ONE PLoS ONE, Vol 9, Iss 5, p e98133 (2014) |
| ISSN: | 1932-6203 |
| Popis: | Tribe Theeae, which includes some economically important and widely grown plants, such as beverage tea and a number of woody ornamentals, is the largest member of the Theaceae family. Using five genomic regions (chloroplast: atpI-H, matK, psbA5'R-ALS-11F, rbcL; nuclear: LEAFY) and 30 species representing four of the five genera in this tribe (Apterosperma, Camellia, Polyspora, and Pyrenaria s.l.), we investigated the phylogeny of Theeae and assessed the delimitation of genera in the tribe. Our results showed that Polyspora was monophyletic and the sister of the three other genera of Theeae investigated, Camellia was paraphyletic and Pyrenaria was polyphyletic. The inconsistent phylogenetic placement of some species of Theeae between the nuclear and chloroplast trees suggested widespread hybridization between Camellia and Pyrenaria, Polyspora and Parapyrenaria. These results indicate that hybridization, rather than morphological homoplasy, has confused the current classification of Theeae. In addition, the phylogenetic placement and possible allies of Laplacea are also discussed. |
| Databáze: | OpenAIRE |
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