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245 results for “Pooideae”
Linked collectors and determiners for: El género Festuca (Poaceae: Pooideae) en México.
Natural history specimen data linked to collectors and determiners held within, "El género Festuca (Poaceae: Pooideae) en México". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/54b9569e-94b0-4da2-88f4-fa5baae7445c">https://bionomia.net/dataset/54b9569e-94b0-4da2-88f4-fa5baae7445c</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/54b9569e-94b0-4da2-88f4-fa5baae7445c">https://gbif.org/dataset/54b9569e-94b0-4da2-88f4-fa5baae7445c</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Cynosurus peltieri (Pooideae, Poaceae), a poorly known species endemic to the Algerian-Tunisian terrestrial flora: further insights on its occurrence, IUCN Red List assessment, and lectotypification.
Natural history specimen data linked to collectors and determiners held within, "Cynosurus peltieri (Pooideae, Poaceae), a poorly known species endemic to the Algerian-Tunisian terrestrial flora: further insights on its occurrence, IUCN Red List assessment, and lectotypification". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/7c30f997-5513-4990-a378-4040ba4a2b44">https://bionomia.net/dataset/7c30f997-5513-4990-a378-4040ba4a2b44</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/7c30f997-5513-4990-a378-4040ba4a2b44">https://gbif.org/dataset/7c30f997-5513-4990-a378-4040ba4a2b44</a>. Formatted as a Frictionless Data package.
Testing the chilling: Before drought-tolerance hypothesis in Pooideae grasses
<p>Temperate Pooideae are a large clade of economically important grasses distributed in some of the Earth's coldest and driest terrestrial environments. Previous studies have inferred that Pooideae diversified from their tropical ancestors in a cold montane habitat, suggesting that above-freezing cold (chilling) tolerance evolved early in the subfamily. By contrast, drought tolerance is hypothesized to have evolved multiple times independently in response to global aridification that occurred after the split of Pooideae tribes. To independently test predictions of the chilling before-drought hypothesis in Pooideae, we assessed the conservation of whole plant and gene expression traits in response to chilling versus drought. We demonstrated that both trait responses are more similar across tribes in cold as compared to drought, suggesting that chilling responses evolved before, and drought responses after, tribe diversification. Moreover, we found significantly more overlap between drought and chilling-responsive genes within a species than between drought-responsive genes across species, providing evidence that chilling tolerance genes acted as precursors for the novel acquisition of increased drought tolerance multiple times independently, partially through the cooption of chilling responsive genes.</p>
Testing the chilling: Before drought-tolerance hypothesis in Pooideae grasses
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A machine learning enabled approach to assess trade-offs between growth and stress tolerance in Pooideae grasses following domestication
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A comprehensive sampling of species sheds light on the molecular phylogenetics of Calothecinae (Poaceae, Pooideae): evidence for a new subtribe and multiple genera within the Chascolytrum clade
The circumscription of subtribe Calothecinae has undergone several changes since its description. Currently, three genera are considered in the subtribe: <i>Chascolytrum</i>, <i>Laegaardia </i>and <i>Paramochloa</i>, although no phylogenetic evidence for the placement of the two last genera was published so far. In this study we aim to evaluate the circumscription of Calothecinae and the infrageneric classification recently proposed for <i>Chascolytrum </i>using a more comprehensive sampling of taxa and molecular markers. We included species of all genera of Calothecinae, plus two South American species of <i>Trisetum s.l.</i> that have been suggested to be related to <i>Chascolytrum</i>, and representatives from subtribes Agrostidinae, Echinopogoninae, Brizinae, Torreyochloinae, Phalaridinae and Koeleriinae. We performed Bayesian and Maximum Likelihood analyses using a total of six molecular markers, including four plastid DNA regions (<i>atpF-atpH, matK, rps16</i> intron, and <i>trnL-trnF</i>) and two ribosomal nuclear regions (ITS and ETS). Our results revealed that neither Calothecinae nor <i>Chascolytrum </i>are monophyletic considering their last circumscription. <i>Trisetum brasiliense</i> and <i>T. bulbosum</i> appeared nested to <i>Chascolytrum</i>, and are formally included in Calothecinae as <i>incertae sedis</i>. More studies are needed to confirm their taxonomic position. Based on morphological characters, <i>Laegaardia </i>and <i>Paramochloa </i>are transferred to the new subtribe Paramochloinae, and <i>Chascolytrum </i>is splitted in nine different genera, of which two are newly described: <i>Boldrinia </i>(gen. nov.), <i>Calotheca, Chascolytrum, Erianthecium, Lombardochloa, Microbriza, Poidium, Rhombolytrum</i>, and <i>Rosengurttia </i>(gen. nov.).
FIGURE 69. Bromus tectorum. A. Inflorescence. B. Spikelet. C. Lemma. D in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 69. Bromus tectorum. A. Inflorescence. B. Spikelet. C. Lemma. D. Ligule. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
FIGURE 44. Bromus inermis. A. Rhizome B. Ligule and auricles. C. Spikelet. D. Inflorescence. E in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 44. Bromus inermis. A. Rhizome B. Ligule and auricles. C. Spikelet. D. Inflorescence. E. Lemmas. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
FIGURE 41. Bromus hordeaceus. A. Inflorescence. B. Spikelet. C in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 41. Bromus hordeaceus. A. Inflorescence. B. Spikelet. C. Lemma. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
FIGURE 38. Bromus frondosus. A. Spikelet. B. Inflorescence. C. Glumes. D in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 38. Bromus frondosus. A. Spikelet. B. Inflorescence. C. Glumes. D. Lemma. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
FIGURE 35. Bromus exaltatus. A. Spikelet. B. Lemma. C. Habit. D in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 35. Bromus exaltatus. A. Spikelet. B. Lemma. C. Habit. D. Ligule. Based on Hitchcock 883 (GH). Illustration by Paulette Dennis © Paulette Dennis.
FIGURE 47. Bromus japonicus. A. Glumes. B. Lemma. C. Spikelet. D. Ligule. E. Habit. F in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 47. Bromus japonicus. A. Glumes. B. Lemma. C. Spikelet. D. Ligule. E. Habit. F. Inflorescence. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
FIGURE 58. Bromus pseudolaevipes. A. Ligule and auricles. B. Ligule and leaf sheath. C. Inflorescence. D. Lemma. E in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 58. Bromus pseudolaevipes. A. Ligule and auricles. B. Ligule and leaf sheath. C. Inflorescence. D. Lemma. E. Spikelet. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
FIGURE 32 in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 32. Illustration of Bromus dolichocarpus. A. Spikelet. B. Lemma C. Inflorescence. D. Ligule. Based on Breedlove 55564 (GH). Illustration by Paulette Dennis © Paulette Dennis.
FIGURE 29. Bromus diandrus. A. Ligule. B. Inflorescence. C. Lemma. D. Spikelet. E in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 29. Bromus diandrus. A. Ligule. B. Inflorescence. C. Lemma. D. Spikelet. E. Glumes. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
FIGURE 25. Bromus densus. A. Lemma. B. Spikelet. C. Ligule. D in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 25. Bromus densus. A. Lemma. B. Spikelet. C. Ligule. D. Habit. Based on Peterson et al. 17870 (CAN). Illustration by Paulette Dennis © Paulette Dennis.
FIGURE 27. A in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 27. A large population of Bromus densus growing on grassy slopes in Sierra Zapaliname, Coahuila, México (Peterson et al. 21128). Photo: J.M. Saarela.
FIGURE 50. Bromus lanatipes. A. Lemma. B. Inflorescence. C in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 50. Bromus lanatipes. A. Lemma. B. Inflorescence. C. Spikelet. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
FIGURE 61. Bromusrichardsonii. A. Habit. B. Inflorescence C. Spikelet. D, E. Lemmas F, G. Glumes. H in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 61. Bromusrichardsonii. A. Habit. B. Inflorescence C. Spikelet. D, E. Lemmas F, G. Glumes. H. Upper glume. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
FIGURE 53. Bromus madritensis. A. Lemma. B. Spikelet. C in A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America
FIGURE 53. Bromus madritensis. A. Lemma. B. Spikelet. C. Inflorescence. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.