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Phylogeny of Cyperaceae Based on DNA Sequence Data: Current Progress and Future Prospects
The phylogenetic position of 40 species in 21 genera is presented in this study for the first time, elucidating their position in Abildgaardieae (Trachystylis), CryptangIEae (Didymiandrum, Exochogyne), Cypereae (Androtrichum, Volkiella), Eleocharideae (Chillania), and Schoeneae (Calyptrocarya, Morelotia).
Symbiotic diversity, specificity and distribution of rhizobia in native legumes of the Core Cape Subregion (South Africa).
Although host genotype was the main factor determining rhizobial diversity, ecological factors such as soil acidity and site elevation were positively correlated with genetic variation within Mesorhizobium and Burkholderia, respectively, indicating an interplay of host and environmental factors on the distribution of Fynbos rhizobia.
What is a Genus in Cypereae: Phylogeny, Character Homology Assessment and Generic Circumscription in Cypereae
Using a DNA-based tree as the framework, the homology of key taxonomic characters in tribe Cypereae is assessed and the question of generic circumscription is revisited, to include all taxa with a Cyperus-type embryo and perianth segments.
Extinction Risk and Diversification Are Linked in a Plant Biodiversity Hotspot
Plant extinction risks in the Cape, South Africa differ from those for vertebrates worldwide, with young and fast-evolving plant lineages marching towards extinction at the fastest rate, but
Phylogeny of Cyperaceae based on DNA sequence data - a new rbcL analysis
A parsimony analysis was carried out using all rbcL sequences currently available for Cyperaceae, including data for two new genera, with one outcome may be that only two subfamilies, Mapanioideae and Cyperoideae, are recognized.
An assessment of suprageneric phylogeny inCyperaceae usingrbcL DNA sequences
The phylogeny of suprageneric groups inCyperaceae has been examined by cladistic analysis ofrbcL sequence data of 80 species in 40 genera. The results support the family as monophyletic and derived
Savanna fire and the origins of the 'underground forests' of Africa.
The results indicate that the geoxylic growth form may have evolved in response to the interactive effects of frequent fires and high precipitation, and may be regarded as markers of fire-maintained savannas occurring in climates suitable for forests.
Spiny plants, mammal browsers, and the origin of African savannas
The findings suggest that herbivore-adapted savannas evolved several million years before fire-maintainedsavannas and probably, in different environmental conditions.
Phylogenetic relationships in Cyperaceae subfamily Mapanioideae inferred from pollen and plastid DNA sequence data.
New groupings within the subfamily Mapanioideae have been discovered based on the specialization of some taxa in terms of their pollination biology, including one that includes two taxa from Hypolytreae, Capitularina and Exocarya.
Recombination and horizontal transfer of nodulation and ACC deaminase (acdS) genes within Alpha- and Betaproteobacteria nodulating legumes of the Cape Fynbos biome.
Preliminary evidence is revealed of high degrees of horizontal transfer of nodulation genes among closely related species of both groups of rhizobia, but also among species with distant genetic backgrounds, underscoring the importance of lateral transfer of symbiosis traits as an important evolutionary force amongrhizobia of the Cape Fynbos biome.