A comprehensive species sampling sheds light on the molecular phylogenetics of Calothecinae (Poaceae, Pooideae, Poeae): Evidence for a new subtribe and multiple genera within the <i>Chascolytrum</i> clade

Silva, Leonardo N. Da; Saarela, Jeffery M.; Essi, Liliana; Souza-Chies, Tatiana T.

doi:10.1111/jse.12750

Cited by 6 publications

(25 citation statements)

References 46 publications

(147 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Greeneochloa differs from Calamagrostis in having hairy ovaries, extravaginal shoot innovations, flat leaf blades, and panicles contracted usually with ascending tightly appressed or slightly spreading branches. Recognition of the genus and its inclusion in Echinopogoninae are consistent with studies that sampled one of the two species (G. coarctata) (Saarela et al, 2017;da Silva et al, 2022). We find a third species, Calamagrostis expansa, which is endemic to the Hawaiian Islands (Wagner et al, 1990), to be part of this lineage in our combined plastid analyses.…”

Section: Echinopogoninaesupporting

confidence: 89%

“…These lineages share a common ancestor with Agrostula, a new segregate genus distributed in France, Spain, Portugal, and Morocco found in cold temperate, often high-elevation, environments (Peterson et al, 2020). A clade comprising the South American subtribes Calothecinae and Paramochloinae (a topology consistent with previous phylogenetic results; Da Silva et al, 2022) and Agrostula from Europe (Peterson et al, 2010b) are the successive sister groups to the clade comprising Gastridium-Triplachne, Agrostis-Alpagrostis, Podagrostis-Calamagrostis p.p., and Calamagrostis s.s. 4.1.3.2 Calamagrostis s.s. Our analyses considerably advance understanding of the evolutionary history of Calamagrostis s.s. The lineage corresponding to the genus is moderately to strongly supported, and multiple lineages within the genus are identified.…”

Section: Calothecinaesupporting

confidence: 87%

“…Silva, Calotheca Desv., Chascolytrum Desv., Erianthecium Parodi, Lombardochloa Roseng., Microbriza Parodi ex Nicora & Rúgolo, Poidium Nees, Rhombolytrum Link (syn.— Gymnachne Parodi), Rosengurttia L.N. Silva, Trisetum brasiliense Louis‐Marie, T. bulbosum Hitchc., and possibly T. juergensii Hack (Da Silva et al, 2022; Soreng et al, 2022a). Subtribe Paramochloinae L.N.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phylogeny and biogeography of Calamagrostis (Poaceae: Pooideae: Poeae: Agrostidinae), description of a new genus, Condilorachia (Calothecinae), and expansion of Greeneochloa and Pentapogon (Echinopogoninae)

Peterson

Soreng

Romaschenko

et al. 2022

J of Sytematics Evolution

Self Cite

View full text Add to dashboard Cite

To investigate the evolutionary relationships and biogeographical history among the species of Calamagrostis and other members of subtribes Agrostidinae, Calothecinae, Echinopogoninae, and Paramochloinae, we generated a phylogeny based on DNA sequences from one nuclear ribosomal (ITS) and three plastid regions (rpl32-trnL spacer, rps16-trnK spacer, and rps16 intron). Based on our phylogeny, we identified seven species groups (clades) within Calamagrostis: the Meridionalis group comprises two species from Central and South America, the Americana group comprises species from North America, the Deyeuxia and Epigeios groups comprise species from Eurasia, the Orientalis group comprises species from East Asia, the Purpurea group comprises species from Eurasia and North America, and the Calamagrostis group comprises species from Eurasia and North America. We hypothesize that Calamagrostis originated in North America with the primary split of the Meridionalis group, followed by split between the autochthonous Americana group and two future Eurasian branches encompassing all the remaining groups, which possibly dispersed into Eurasia independently. The molecular data suggest that hybridization and genomic introgression played a prominent role in the evolutionary history of Calamagrostis. We propose a new genus, Condilorachia, segregated from Trisetum s.l., with three species from South America for which we propose new combinations: Condilorachia bulbosa, Condilorachia brasiliensis, and Condilorachia juergensii; a new combination in Greeneochloa, Greeneochloa expansa; and the subsumption of Dichelachne into Pentapogon with 20 new combinations: Pentapogon avenoides, Pentapogon brassii, Pentapogon chaseianus, Pentapogon crinita, Pentapogon densus, Pentapogon frigidus, Pentapogon gunnianus, Pentapogon hirtella, Pentapogon inaequiglumis, Pentapogon lautumia, Pentapogon micrantha, Pentapogon parva, Pentapogon quadrisetus, Pentapogon rara, Pentapogon robusta, Pentapogon scaberulus, Pentapogon sclerophyllus, Pentapogon suizanensis, Pentapogon sieberiana, and Pentapogon validus. We provide a diagnosis, description, and a key to the species of Condilorachia.

show abstract

Section: Echinopogoninaesupporting

confidence: 89%

Section: Calothecinaesupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phylogeny and biogeography of Calamagrostis (Poaceae: Pooideae: Poeae: Agrostidinae), description of a new genus, Condilorachia (Calothecinae), and expansion of Greeneochloa and Pentapogon (Echinopogoninae)

Peterson

Soreng

Romaschenko

et al. 2022

J of Sytematics Evolution

Self Cite

View full text Add to dashboard Cite

show abstract

“…The monograph by Matthei (1975) covered many of the genera. Da Silva et al (2022) found that Trisetum brasiliense Louis‐Marie and T. bulbosum Hitch. belong to this subtribe but needed further study to place them more precisely.…”

Section: Discussionmentioning

confidence: 99%

“…Peterson et al (2022c) placed these two species, and T. juergensii Hack., in Condilorachia P.M. Peterson, Soreng & Romasch. Da Silva et al (2022) revised the other genera: Boldrinia L.N.Silva (1 sp., Uruguay), Calotheca Desv. (1 sp., Argentina to Brazil, and disjunct in Chile); Chascolytrum Desv.…”

Section: Discussionmentioning

confidence: 99%

Grasses through space and time: An overview of the biogeographical and macroevolutionary history of Poaceae

Gallaher

Peterson

Soreng

et al. 2022

J of Sytematics Evolution

View full text Add to dashboard Cite

Grasses are widespread on every continent and are found in all terrestrial biomes. The dominance and spread of grasses and grassland ecosystems have led to significant changes in Earth′s climate, geochemistry, and biodiversity. The abundance of DNA sequence data, particularly chloroplast sequences, and advances in placing grass fossils within the family allows for a reappraisal of the family′s origins, timing, and geographic spread and the factors that have promoted diversification. We reconstructed a time‐calibrated grass phylogeny and inferred ancestral areas using chloroplast DNA sequences from nearly 90% of extant grass genera. With a few notable exceptions, the phylogeny is well resolved to the subtribal level. The family began to diversify in the Early–Late Cretaceous (crown age of 98.54 Ma) on West Gondwana before the complete split between Africa and South America. Vicariance from the splitting of Gondwana may be responsible for the initial divergence in the family. However, Africa clearly served as the center of origin for much of the early diversification of the family. With this phylogenetic, temporal, and spatial framework, we review the evolution and biogeography of the family with the aim to facilitate the testing of biogeographical hypotheses about its origins, evolutionary tempo, and diversification. The current classification of the family is discussed with an extensive review of the extant diversity and distribution of species, molecular and morphological evidence supporting the current classification scheme, and the evidence informing our understanding of the biogeographical history of the family.

show abstract

One more step into the resolution of Panicum (Poaceae) polyphyly: Drakkaria, a new segregate genus from neotropical Seasonally Dry Tropical Forests

Silva,

Hillmann,

Acosta

et al. 2024

Botanical Journal of the Linnean Society

View full text Add to dashboard Cite

Panicum was once one of the largest grass genera with >450 species associated to >4000 names. The revelation of its polyphyletic nature emerged with the use of molecular data in phylogenetic studies. Consequently, most of its species have been transferred to other genera. A notable case occurred with Panicum (subg. Phanopyrum) sect. Stolonifera, whose species were recovered in tribe Paspaleae, distantly related to Panicum s.s. (P. subg. Panicum), placed in tribe Paniceae. Most species from the section were transferred to Ocellochloa, leaving only one enigmatic species, P. venezuelae, remaining as incertae sedis. In this study, we endeavoured to clarify the phylogenetic placement of P. venezuelae by expanding the taxon sampling and increasing the number of molecular markers. The nuclear External Transcribed Spacer marker was used for the first time in a comprehensive analysis of Paspalinae genera. Additionally, we reviewed the literature and herbarium records to provide a comprehensive update on the morphology and distribution of the species, and a conservation assessment. Our findings confirm that Panicum venezuelae belongs to the tribe Paspaleae, which is here transferred to a new genus, Drakkaria. However, identifying its closest relative remains an open question within Paspaleae. The new genus is considered here endemic to the diverse and threatened Neotropical Seasonally Dry Tropical Forests.

show abstract

A comprehensive species sampling sheds light on the molecular phylogenetics of Calothecinae (Poaceae, Pooideae, Poeae): Evidence for a new subtribe and multiple genera within the Chascolytrum clade

Cited by 6 publications

References 46 publications

Phylogeny and biogeography of Calamagrostis (Poaceae: Pooideae: Poeae: Agrostidinae), description of a new genus, Condilorachia (Calothecinae), and expansion of Greeneochloa and Pentapogon (Echinopogoninae)

Phylogeny and biogeography of Calamagrostis (Poaceae: Pooideae: Poeae: Agrostidinae), description of a new genus, Condilorachia (Calothecinae), and expansion of Greeneochloa and Pentapogon (Echinopogoninae)

Grasses through space and time: An overview of the biogeographical and macroevolutionary history of Poaceae

One more step into the resolution of Panicum (Poaceae) polyphyly: Drakkaria, a new segregate genus from neotropical Seasonally Dry Tropical Forests

Contact Info

Product

Resources

About