• Corpus ID: 31542229

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… 
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Phylogenetics of Stipeae (Poaceae: Pooideae) based on plastid and nuclear DNA sequences
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…
Systematics and evolution of the needle grasses (Poaceae: Pooideae: Stipeae) based on analysis of multiple chloroplast loci, ITS, and lemma micromorphology
TLDR
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.
An expanded phylogenetic analysis of Austrostipa (Poaceae: Stipeae) to test infrageneric relationships
TLDR
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
TLDR
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.
Stipa (Poaceae) and allies in the Old World: molecular phylogenetics realigns genus circumscription and gives evidence on the origin of American and Australian lineages
TLDR
109 new ingroup taxa with a focus on Old World Stipeae are studied using chloroplast and nuclear ribosomal DNA sequences, and taxonomic key characters are discussed.
Molecular Phylogenetics and Micromorphology of Australasian Stipeae (Poaceae, Subfamily Pooideae), and the Interrelation of Whole-Genome Duplication and Evolutionary Radiations in This Grass Tribe
TLDR
A rather coherent picture of chromosome number variation underlines the enormous phylogenetic and evolutionary significance of this frequently ignored character.
Phylogenetic analysis of Jarava (Poaceae, Pooideae, Stipeae) and related genera: testing the value of the awn indumentum in the circumscription of Jarava
TLDR
The monophyly of Jarava is tested and the close relationship between Jarava and Pappostipa appears as a novelty and they should be considered within this genus or recognized as a new genus sister to Papposteripa.
Phylogenetics of Piptatherum s.l. (Poaceae: Stipeae): Evidence for a new genus, Piptatheropsis, and resurrection of Patis
TLDR
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.
Phylogeny of Nassella (Stipeae, Pooideae, Poaceae) Based on Analyses of Chloroplast and Nuclear Ribosomal DNA and Morphology
TLDR
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
TLDR
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.
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