MOLECULAR PHYLOGENETIC ANALYSIS OF THE AMERICAN STIPEAE (POACEAE) RESOLVES JARAVA SENSU LATO POLYPHYLETIC: EVIDENCE FOR A NEW GENUS, PAPPOSTIPA
@article{Romaschenko2008MOLECULARPA, title={MOLECULAR PHYLOGENETIC ANALYSIS OF THE AMERICAN STIPEAE (POACEAE) RESOLVES JARAVA SENSU LATO POLYPHYLETIC: EVIDENCE FOR A NEW GENUS, PAPPOSTIPA}, author={Konstantyn Romaschenko and Paul M. Peterson and Robert John Soreng and N{\'u}ria Garcia‐Jacas and Oksana Futorna and Alfonso Susanna}, journal={Journal of the Botanical Research Institute of Texas}, year={2008}, volume={2}, pages={165-192} }
A molecular phylogenetic analysis based on plastid ( trnK-matK , matK, trnH-psbA, and trnL-trnF regions) and nuclear ITS DNA sequences of 68 species representing 11 genera suggests an entirely new hypothesis for the evolutionary history within the tribe. Piptochaetium, Anatherostipa, Ptilagrostis and Hesperostipa are basal lineages that diverge independently from a clade that includes a monophyletic Jarava subg. Pappostipa (rendering Jarava s.l. polyphyletic) that is sister group to Austrostipa…
43 Citations
Phylogenetics of Stipeae (Poaceae: Pooideae) based on plastid and nuclear DNA sequences
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The Stipeae tribe is a group of 400−600 grass species of worldwide distribution that are currently placed in 21 genera. The ‘needlegrasses’ are characterized by having single-flowered spikelets and…
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The phylogenetic hypothesis supports the recognition of the following genera and groups and monophyly of Phaenospermateae including Duthieinae is demonstrated, and its inclusion within or treatment as sister to Stipeae is rejected.
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A phylogeny of the Australasian grass genus Austrostipa is determined and the inferred phylogeny hints at gene duplication, chloroplast capture, or deep coalescence in the evolutionary history of Aust Frostipa.
Molecular phylogenetics and micromorphology of Australasian Stipeae (Poaceae), and the interrelation of whole-genome duplication and evolutionary radiations in this grass tribe
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These genera are most abundant in Central and Eastern Asia, which makes a colonization of Australian and New Zealand from this region more likely, perhaps via long-distance dispersal, than colonization of Australia from southern South America via Antarctica as previously invoked.
Molecular Phylogenetics and Micromorphology of Australasian Stipeae (Poaceae, Subfamily Pooideae), and the Interrelation of Whole-Genome Duplication and Evolutionary Radiations in This Grass Tribe
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- Biology
- 2011
A phylogenetic analysis of 53 species that have been associated with the Oryzopsis/Piptatherum complex using four plastid regions in combination with lemma micromorphology to infer evolutionary relationships is conducted and a new genus, Piptatheropsis, is proposed to include five North American species.
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The DNA data alone and combined with morphology showed Nassella to be paraphyletic with respect to a monophyletic Amelichloa, and none of the groups previously circumscribed as subgenera of Stipa, that are now considered to be composed of species in NassellA, were recovered as monophylete.
Duthieeae, a new tribe of grasses (Poaceae) identified among the early diverging lineages of subfamily Pooideae: molecular phylogenetics, morphological delineation, cytogenetics and biogeography
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- 2011
Morphological, cytogenetic and biogeographical analyses point to warm and humid conditions as the ancestral bioclimatic niche of Phaenosperma and Duthieeae, whereas adaptation to cold and drought occurred only in a part of DuthIEeae but was obviously less successful than in the widespread and much more species-rich tribe Stipeae.
Miocene-Pliocene speciation, introgression, and migration of Patis and Ptilagrostis (Poaceae: Stipeae).
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Molecules and Morphology in South American Stipeae (Poaceae)
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Evaluated alternative generic treatments of the South American Stipeae, all of which are based on morphological and anatomical information, provided strong support for the monophyly of only two currently recognized genera, Piptochaetium and Hesperostipa.
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