A Preliminary Phylogenetic Analysis of the Grass Subfamily Pooideae (Poaceae), with Attention to Structural Features of the Plastid and Nuclear Genomes, Including an Intron Loss in GBSSI

Davis, Jerrold I.; Soreng, Robert J.

doi:10.5642/aliso.20072301.27

Cited by 57 publications

(78 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the studies differ in the order of branching within the PAM clade, all resolve a paraphyletic subtribe Poinae, with genera of Alopecurinae and sometimes Miliinae nested within. In the combined RS and morphology analysis (Soreng and Davis 2000), Alopecurinae and Miliinae resolved as a clade within Poinae, while in the sequence analyses presented here and in Davis and Soreng (2007) only Alopecurus and Beckmannia are placed within Poinae, and the position of Phleum and Milium is unresolved with respect to Poinae. The placement of Alopecurus and Beckmannia within Poinae and outside the Alopecurinae-Miliinae clade is odd, and may perhaps reflect something unusual in the evolution of this cpDNA region, rather than indicating a close relationship.…”

Section: Outline Of Proposed Infrageneric Classification Of Poamentioning

confidence: 98%

Phylogeny of Poa (Poaceae) Based on trnT–trnF Sequence Data: Major Clades and Basal Relationships

Gillespie¹,

Archambault²,

Soreng³

2007

aliso

Self Cite

125

View full text Add to dashboard Cite

Poa, the largest genus of grasses (Poaceae) with over 500 species, occurs throughout temperate and boreal regions in both hemispheres. A phylogenetic study of Poa based on trnT-trnF chloroplast DNA sequence data is presented focusing on basal relationships, major clades, generic boundaries, and placement of putatively closely related genera. Results support the monophyly of the main lineage of Poa if subgen. Andinae is excluded and Anthochloa, Austrofestuca, Dissanthelium (at least in part), and Eremopoa are included. The main Poa clade and subgen. Andinae resolve within a strongly supported Poinae-Alopecurinae-Miliinae clade (PAM). The subdivision of Poa into five major clades, proposed based on chloroplast restriction site data, is supported by sequence data. The basal-most clade (ArcSyl) comprises Poa subgen. Arctopoa and subgen. Poa sect. Sylvestres, two groups having disparate morphology, but similar cpDNA. The next-diverging clade (BAPO), comprising sects. Bolbophorum, Alpinae, Parodiochloa, and Ochlopoa, is strongly supported and characterized by highly divergent cpDNA. The majority of Poa species and sections form a strongly supported clade comprising major clades SPOSTA, PoM, and HAMBADD. Newly reported in this study is Eremopoa as a distinct lineage positioned between this higher Poa clade and BAPO. A revised infrageneric classification of Poa comprising five subgenera is proposed. Two new subgeneric divisions of Poa are proposed: subgen. Stenopoa for the SPOSTA clade and supersect. Homalopoa for the HAMBADD clade. The monotypic genus Anthochloa is reduced to Poa sect. Anthochloa, and its one species recognized as Poa lepidula.

show abstract

Section: Outline Of Proposed Infrageneric Classification Of Poamentioning

confidence: 98%

Phylogeny of Poa (Poaceae) Based on trnT–trnF Sequence Data: Major Clades and Basal Relationships

Gillespie¹,

Archambault²,

Soreng³

2007

aliso

Self Cite

125

View full text Add to dashboard Cite

show abstract

“…The following 8 taxa were chosen as outgroups from the PAC-CAD clade: one species of Danthonia (Danthonioideae), two species of Rytidosperma (Danthonioideae), two species of Aristida (Aristidoideae), and three species of Chasmanthium (Centothecoideae or Centotheceae) (GPWG, 2001;Davis and Soreng, 2007). The Chloridoideae subset of data is partitioned as following: six species of tribe Triraphideae, 34 species (two multiple accessions) of tribe Eragrostideae, 18 species of Zoysieae (one multiple accession) and 188 species (11 multiple accessions) of Cynodonteae.…”

Section: Taxon Samplingmentioning

confidence: 99%

A classification of the Chloridoideae (Poaceae) based on multi-gene phylogenetic trees

Peterson

Romaschenko

Johnson

2010

Molecular Phylogenetics and Evolution

164

267

View full text Add to dashboard Cite

“…Phylogenetic relationships within subfamily Pooideae (cool temperate grasses) following Davis and Soreng (2008).…”

Section: Supplemental Datamentioning

confidence: 99%

“…Pooid grasses comprise approximately 3,300 species (Grass Phylogeny Working Group, 2001), including the economically important cereals wheat (Triticum aestivum; Triticeae), barley (Hordeum vulgare; Triticeae), and oat (Avena sativa; Poeae). Phylogenetic analyses distinguish two groups of pooid grasses: the crown pooids containing Poeae and Triticeae, and the early pooids that are sister to the crown pooids (Davis and Soreng, 2008;Supplemental Fig. S1).…”

mentioning

confidence: 99%

Discrete Developmental Roles for Temperate Cereal GrassVERNALIZATION1/FRUITFULL-Like Genes in Flowering Competency and the Transition to Flowering

Preston

Kellogg

2007

Plant Physiology

View full text Add to dashboard Cite

Members of the grass subfamily Pooideae are characterized by their adaptation to cool temperate climates. Vernalization is the process whereby flowering is accelerated in response to a prolonged period of cold. Winter cereals are tolerant of low temperatures and flower earlier with vernalization, whereas spring cultivars are intolerant of low temperatures and flower later with vernalization. In the pooid grasses wheat (Triticum monococcum, Triticum aestivum) and barley (Hordeum vulgare), vernalization responsiveness is determined by allelic variation at the VERNALIZATION1 (VRN1) and/or VRN2 loci. To determine whether VRN1, and its paralog FRUITFULL2 (FUL2), are involved in vernalization requirement across Pooideae, we determined expression profiles for multiple cultivars of oat (Avena sativa) and wheat with and without cold treatment. Our results demonstrate significant up-regulation of VRN1 expression in leaves of winter oat and wheat in response to vernalization; no treatment effect was found for spring or facultative growth habit oat and wheat. Similar cold-dependent patterns of leaf expression were found for FUL2 in winter oat, but not winter wheat, suggesting a redundant qualitative role for these genes in the quantitative induction of flowering competency of oat. These and other data support the hypothesis that VRN1 is a common regulator of vernalization responsiveness within the crown pooids. Finally, we found that up-regulation of VRN1 in vegetative meristems of oat was significantly later than in leaves. This suggests distinct and conserved roles for temperate cereal grass VRN1/FUL-like genes, first, in systemic signaling to induce flowering competency, and second, in meristems to activate genes involved in the floral transition.

show abstract

A Preliminary Phylogenetic Analysis of the Grass Subfamily Pooideae (Poaceae), with Attention to Structural Features of the Plastid and Nuclear Genomes, Including an Intron Loss in GBSSI

Cited by 57 publications

References 35 publications

Phylogeny of Poa (Poaceae) Based on trnT–trnF Sequence Data: Major Clades and Basal Relationships

Phylogeny of Poa (Poaceae) Based on trnT–trnF Sequence Data: Major Clades and Basal Relationships

A classification of the Chloridoideae (Poaceae) based on multi-gene phylogenetic trees

Discrete Developmental Roles for Temperate Cereal GrassVERNALIZATION1/FRUITFULL-Like Genes in Flowering Competency and the Transition to Flowering

Contact Info

Product

Resources

About