Revisiting the taxonomy of the Neotropical Haemodoraceae (Commelinales)

Pellegrini, Marco Octávio de Oliveira; Hickman, Ellen J.; Guttiérrez, Jorge E; Smith, Rhian J.; Hopper, Stephen D.

doi:10.3897/phytokeys.169.57996

Cited by 5 publications

(14 citation statements)

References 45 publications

(123 reference statements)

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“…The analyses included both nuclear and plastome data and elucidates the relationship among most lineages, with particular attention paid to seven genera previously unplaced in a molecular phylogenetic context: Aetheolirion , Dictyospermum , Matudanthus , Pseudoparis , Pyrrorhiza , Tapheocarpa , and Triceratella . The two missing genera are Cubanicula , recently described in Haemodoraceae (Pellegrini et al, 2020) and Sauvallea , in Commelinaceae, only known from the type collection (see below).…”

Section: Discussionmentioning

confidence: 99%

“…We aimed to sample at least one species of each of the 60 currently accepted genera in Commelinales, according to the World Checklist of Vascular Plants (WCVP, 2020, with updates from Pellegrini et al, 2020). Samples were obtained from Royal Botanic Gardens, Kew (RBGK) collections, mainly from the herbarium (K) and the Kew DNA and Kew Tissue Banks, but also from the living collections and the Millennium Seed Bank.…”

Section: Taxon Samplingmentioning

confidence: 99%

“…(15/ca. 120), Hanguanaceae Airy Shaw (1/19), Philydraceae Link (3/6) and Pontederiaceae Kunth (2/41) (WCVP, 2020; with updates from Pellegrini et al, 2020). Numerous species of the order are cultivated as ornamentals (e.g., spiderworts, Tradescantia , and kangaroo paws, Anigozanthos ), and a few are edible (e.g., leaves of Commelina cyanea ) (Aerne‐Hains and Simpson, 2017; Christenhusz et al, 2017).…”

Section: Figurementioning

confidence: 99%

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A comprehensive phylogenomic study of the monocot order Commelinales, with a new classification of Commelinaceae

Zuntini

Frankel

Pokorny

et al. 2021

American J of Botany

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Resolving relationships within order Commelinales has posed quite a challenge, as reflected in its unstable infra-familial classification. Thus, we investigated (1) relationships across families and genera of Commelinales; (2) phylogenetic placement of never-before sequenced genera; (3) how well off-target plastid data integrate with other plastid-based data sets; and (4) how the novel inferences coincide with the infra-familial classification. METHODS:We generated two large data sets (nuclear and plastome) by means of target sequence capture using the Angiosperms353 probe set, with additional sequences mined from publicly available transcriptomes and full plastomes. A third extended-plastid data set was considered, including all species with sequences in public repositories. Species trees were inferred under a multispecies coalescent framework from individual gene trees and also using maximum likelihood analyses from concatenated and partitioned data. RESULTS:The nuclear, plastome, and extended-plastid data sets include 52, 53, and 58 genera, respectively, and up to 290 species of Commelinales, representing the most comprehensive molecular sampling for the order to date, which includes seven neverbefore sequenced genera. CONCLUSIONS:We inferred robust phylogenies supporting the monophyly of Commelinales and its five constituent families, and we recovered the clades Pontederiaceae-Haemodoraceae and Hanguanaceae-Commelinaceae, as previously reported. The placement of Philydraceae remains contentious. Relationships within the two largest families, Commelinaceae and Haemodoraceae, are resolved. Based on the latter results, we confirm the subfamilial classification of Haemodoraceae and propose a new classification for Commelinaceae, which includes the synonymization of Tapheocarpa in Commelina.

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Section: Discussionmentioning

confidence: 99%

Section: Taxon Samplingmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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A comprehensive phylogenomic study of the monocot order Commelinales, with a new classification of Commelinaceae

Zuntini

Frankel

Pokorny

et al. 2021

American J of Botany

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“…Ocampos et al, 2017, in a tissue-specific occurrence investigation of rhizomes, stems, leaves, flowers, and fruits, confirmed that Schiekia Meisn., an Haemodoraceae previously monospecific genus endemic of South America, is a source of phenylphenalenones [ 23 ]. At that time, the species investigated was treated as Schiekia orinocensis (Kunth) Meisn., but, after a recent taxonomic revision [ 24 ], it is now recognized as Schiekia timida M.Pell., E.J.Hickman, Rhian J.Sm. & Hopper, due to its different ecological preferences and morphology.…”

Section: Introductionmentioning

confidence: 99%

“…In Brazil, this plant composes a drink used in religious ceremonies of the Krahô tribe. S. timida , refers to the “shy” flowers that slightly open mostly during the rainy season of the seasonally flooded grasslands of South America’s north region [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Phytotoxicity of Schiekia timida Seed Extracts, a Mixture of Phenylphenalenones

et al. 2021

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Phenylphenalenones, metabolites found in Schiekia timida (Haemodoraceae), are a class of specialized metabolites with many biological activities, being phytoalexins in banana plants. In the constant search to solve the problem of glyphosate and to avoid resistance to commercial herbicides, this work aimed to investigate the phytotoxic effect of the methanolic extract of S. timida seeds. The chemical composition of the seed extract was directly investigated by NMR and UPLC-QToF MS and the pre- and post-emergence phytotoxic effect on a eudicotyledonous model (Lactuca sativa) and a monocotyledonous model (Allium cepa) was evaluated through germination and seedling growth tests. Three concentrations of the extract (0.25, 0.50, and 1.00 mg/mL) were prepared, and four replicates for each of them were analyzed. Three major phenylphenalenones were identified by NMR spectroscopy: 4-hydroxy-anigorufone, methoxyanigorufone, and anigorufone, two of those reported for the first time in S. timida. The presence of seven other phenylphenalenones was suggested by the LC-MS analyses. The phenylphenalenone mixture did not affect the germination rate, but impaired radicle and hypocotyl growth on both models. The effect in the monocotyledonous model was statistically similar to glyphosate in the lowest concentration (0.25 mg/mL). Therefore, although more research on this topic is required to probe this first report, this investigation suggests for the first time that phenylphenalenone compounds may be post-emergence herbicides.

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A Systematic Review and Meta-Analysis of Vitamin D Status of Patients with Severe Obesity in Various Regions Worldwide

Haghighat,

Sohrabi,

Bagheri

et al. 2023

Obes Facts

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Introduction: Managing nutritional deficiencies is an essential component in the treatment of severe obesity. Vitamin D deficiency is often reported in investigations in severe obese cohorts. However, no prior study has summarized findings on this topic. Consequently, the aim of this systematic review and meta-analysis was to investigate the 25-hydroxyvitamin D [25(OH)D] status in individuals with severe obesity in different regions worldwide. We also evaluated levels of calcium, PTH, and magnesium as secondary outcome measures. Methods: We searched Medline, PubMed, Scopus, the Cochrane Library, and EMBASE for relevant observational studies published in English from 2009 to October 2021. The heterogeneity index among the studies was determined using the Cochran (Q) and I2 tests. Based on the heterogeneity results, the random-effect model was applied to estimate the prevalence of vitamin D deficiency. Results: We identified 109 eligible observational studies. Overall, 59.44% of patients had vitamin D deficiency [25(OH)D <20 ng/ml], whereas 26.95% had vitamin D insufficiency [25(OH)D 20-30 ng/ml]. Moreover, the mean 25(OH)D levels was 18.65 ng/ml in 96 studies. The pooled mean estimate of the serum calcium, PTH and magnesium was 9.26 mg/dl (95% CI: 9.19-9.32, I2=99.7%, p<0.001), 59.24 pg/ml (95% CI: 54.98, 63.51), I2= 99.7%, p < 0.001), and 0.91 mg/dl (0.84, 0.98, I2= 100.0%, p < 0.001), respectively. The results of the sub-group analysis indicated that the mean estimates of 25(OH)D was highest in North America [21.71 ng/ml (19.69, 23.74), (I2=97.2%, p<0.001)] and lowest in Southeast Asia [14.93 ng/ml (14.54, 15.33), (I2=0.0%, p = 0.778)]. Conclusion: The results obtained showed a significant prevalence of vitamin D deficiency among severely obese individuals in various geographical regions, whereas the highest and lowest mean estimates were reported for North America and Southeast Asia, respectively.

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Revisiting the taxonomy of the Neotropical Haemodoraceae (Commelinales)

Cited by 5 publications

References 45 publications

A comprehensive phylogenomic study of the monocot order Commelinales, with a new classification of Commelinaceae

A comprehensive phylogenomic study of the monocot order Commelinales, with a new classification of Commelinaceae

Phytotoxicity of Schiekia timida Seed Extracts, a Mixture of Phenylphenalenones

A Systematic Review and Meta-Analysis of Vitamin D Status of Patients with Severe Obesity in Various Regions Worldwide

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