Subfamilial and tribal relationships of Ranunculaceae: evidence from eight molecular markers

Cossard, Guillaume; Sannier, Julie; Sauquet, Hervé; Damerval, Catherine; Craene, Louis Ronse De; Jabbour, Florian; Nadot, Sophie

doi:10.1007/s00606-015-1270-6

Cited by 44 publications

(50 citation statements)

References 56 publications

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“…Even the more systematically sampled analysis by Cossard et al . () failed to resolve the relationships between tribes. It is evident that our understanding of the phylogenetics of Ranunculaceae remains limited.…”

Section: Discussionmentioning

confidence: 99%

“…(). The multigene analyses are congruent with the chromosomal character data, but, instead of supporting two separate groups, the Thalictrum (T)‐type chromosome is resolved as plesiomorphic and paraphyletic with respect to the Ranunculus (R)‐type (Hoot, ; Wang et al ., ; Cossard et al ., ).…”

Section: Introductionmentioning

confidence: 99%

“…The existing family-level phylogenetic analyses are surprisingly sparse, often have poor taxon sampling and are based on a single gene only (e.g. Ro et al, 1997;Cai et al, 2010;Wang et al, 2010), which may compromise the current taxonomies, although these issues have recently been addressed by Cossard et al (2016). The multigene analyses are congruent with the chromosomal character data, but, instead of supporting two separate groups, the Thalictrum (T)-type chromosome is resolved as plesiomorphic and paraphyletic with respect to the Ranunculus (R)-type (Hoot, 1995;Wang et al, 2009;Cossard et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…and several other genera) or is sister to monophyletic Anemone s.l. has remained controversial, some studies suggesting the former Pfosser et al, 2011;Cossard et al, 2016) and others the latter (Johanson, 1995;Barniske, 2009;Ehrendorfer et al, 2009;Zhang et al, 2014) position.…”

Section: Introductionmentioning

confidence: 99%

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Sensitive phylogenetics ofClematisand its position in Ranunculaceae

Lehtonen

Christenhusz

Falck³

2016

Bot. J. Linn. Soc.

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Ranunculaceae are a nearly cosmopolitan plant family with the highest diversity in northern temperate regions and with relatively few representatives in the tropics. As a result of their position among the early diverging eudicots and their horticultural value, the family is of great phylogenetic and taxonomic interest. Despite this, many genera remain poorly sampled in phylogenetic studies and taxonomic problems persist. In this study, we aim to clarify the infrageneric relationships of Clematis by greatly improving taxon sampling and including most of the relevant subgeneric and sectional types in a simultaneous dynamic optimization of phenotypic and molecular data. We also investigate how well the available data support the hypothesis of phylogenetic relationships in the family. At the family level, all five currently accepted subfamilies are resolved as monophyletic. Our analyses strongly imply that Anemone s.l. is a grade with respect to the Anemoclema + Clematis clade. This questions the recent sinking of well‐established genera, including Hepatica, Knowltonia and Pulsatilla, into Anemone. In Clematis, 12 clades conceptually matching the proposed sectional division of the genus were found. The taxonomic composition of these clades often disagrees with previous classifications. Phylogenetic relationships between the section‐level clades remain highly unstable and poorly supported and, although some patterns are emerging, none of the proposed subgenera is in evidence. The traditionally recognized and horticulturally significant section Viorna is both nomenclaturally invalid and phylogenetically unsupported. Several other commonly used sections are likewise unjustified. Our results provide a phylogenetic background for a natural section‐level classification of Clematis.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sensitive phylogenetics ofClematisand its position in Ranunculaceae

Lehtonen

Christenhusz

Falck³

2016

Bot. J. Linn. Soc.

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“…Phylogenetic reconstruction using recently published phylogenies [25] shows that glossiness is predominant among Ranunculus species and also occurs in related genera (electronic supplementary material, figure S6). The most conservative interpretation would be that glossinessdue to a thin-film epidermis-is the ancestral state for Ranunculus, and also for Ficaria, Oxygraphis and Halerpestes (electronic supplementary material, figure S6), which are more distantly related genera [25,41]. In several species glossiness has been lost over the course of evolution (electronic supplementary material, figure S6).…”

Section: The Coloration Toolkit: a Pigmented Thin Film And Underlyingmentioning

confidence: 99%

Functional optics of glossy buttercup flowers

Kooi

Elzenga

Dijksterhuis

et al. 2017

J. R. Soc. Interface.

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Buttercup (Ranunculus spp.) flowers are exceptional because they feature a distinct gloss (mirror-like reflection) in addition to their matte-yellow coloration. We investigated the optical properties of yellow petals of several Ranunculus and related species using (micro)spectrophotometry and anatomical methods. The contribution of different petal structures to the overall visual signal was quantified using a recently developed optical model. We show that the coloration of glossy buttercup flowers is due to a rare combination of structural and pigmentary coloration. A very flat, pigment-filled upper epidermis acts as a thin-film reflector yielding the gloss, and additionally serves as a filter for light backscattered by the strongly scattering starch and mesophyll layers, which yields the matte-yellow colour. We discuss the evolution of the gloss and its two likely functions: it provides a strong visual signal to insect pollinators and increases the reflection of sunlight to the centre of the flower in order to heat the reproductive organs.

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A eudicot leaf from the Lower Cretaceous (Aptian, Araripe Basin) Crato Konservat‐Lagerstätte

Pessoa

Ribeiro

Jud

2021

American J of Botany

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Premise: The Crato Konservat-Lagerstätte in Brazil preserves an exceptionally rich assemblage of plant macrofossils from the Early Cretaceous (late Aptian), including rare early angiosperm fossils related to Nymphaeales, monocots, and magnoliids, and a variety of angiosperms of uncertain affinities. Macrofossils of eudicot angiosperms have not been described previously, despite the presence of tricolpate pollen. We describe a fossil leaf with morphology characteristic of eudicot angiosperms. Methods: The fossil was collected from a quarry in the Lower Cretaceous (late Aptian) Crato Formation of northeastern Brazil in the state of Ceará. We compared the leaf architecture with that of ferns, gymnosperms, and similar living and fossil angiosperms.Results: The leaf of Baderadea pinnatissecta gen. et sp. nov. is simple and petiolate, with leaf architecture similar to that of some herbaceous Ranunculales. The blade is 5 cm long and the margin is untoothed and twice pinnately lobed with narrow lobes (pinnatisect). The primary vein framework is pinnate and there are multiple orders of reticulate venation. Conclusions: The combination of characters preserved in the fossil supports the interpretation that B. pinnatissecta was an herbaceous eudicot similar to some members of Ranunculales and distinguished from other lobate Aptian angiosperms by leaf shape, presence of multiple orders of reticulate venation, and the absence of glandular teeth. The presence of eudicots in the flora of the Crato was already supported by pollen; the discovery of macrofossils like these provides additional information about their morphology and ecological role in low-latitude Early Cretaceous plant communities.

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Subfamilial and tribal relationships of Ranunculaceae: evidence from eight molecular markers

Cited by 44 publications

References 56 publications

Sensitive phylogenetics ofClematisand its position in Ranunculaceae

Sensitive phylogenetics ofClematisand its position in Ranunculaceae

Functional optics of glossy buttercup flowers

A eudicot leaf from the Lower Cretaceous (Aptian, Araripe Basin) Crato Konservat‐Lagerstätte

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