Dating the evolution of the complex thalloid liverworts (Marchantiopsida): total‐evidence dating analysis supports a Late Silurian‐Early Devonian origin and post‐Mesozoic morphological stasis

Flores, Jorge R.; Bippus, Alexander C.; de Ullivarri, Carmen Fernández; Suárez, Guillermo M.; Hyvönen, Jaakko; Tomescu, Alexandru M. F.

doi:10.1111/nph.19254

Cited by 3 publications

(1 citation statement)

References 100 publications

(168 reference statements)

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“…Due to the limited representation of Aytoniaceae in the fossil record, we can rely with confidence on the previously estimated divergence time reported by Flores [28]: 150.08 Ma (95% HPD: 119.31-178.31 Ma) for the stem age of Aytoniaceae. The MCMC simulations were conducted for 10 7 generations, with sampling occurring every 1000 generations.…”

Section: Divergence Time Estimationmentioning

confidence: 62%

Molecular Phylogenetics and the Evolution of Morphological Complexity in Aytoniaceae (Marchantiophyta)

Xiang,

Shen,

et al. 2024

Plants

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Aytoniaceae are one of the largest families of complex thalloid liverworts (Marchantiopsida), consisting of about 70 species, with most species being distributed in temperate areas. However, the phylogeny and evolution of the morphological character of Aytoniaceae are still poorly understood. Here, we employed two chloroplast loci, specifically, rbcL and trnL-F, along with a 26S nuclear ribosomal sequence to reconstruct the phylogeny and track the morphological evolution of Aytoniaceae. Our results reveal that Aytoniaceae are monophyletic, and five monophyletic clades were recovered (i.e., Asterellopsis-Cryptomitrium, Calasterella, Mannia, Reboulia-Plagiochasma, and Asterella). Asterella was divided into five clades (i.e., Asterella lindenbergiana, subg. Saccatae, subg. Phragmoblepharis, subg. Wallichianae, and subg. Asterella), except for Asterella palmeri, which is the sister of Asterellopsis grollei. Bayesian molecular clock dating indicates that the five primary clades within Aytoniaceae underwent divergence events in the Cretaceous period. Asterellopsis differentiated during the early Upper Cretaceous (c. 84.2 Ma), and Calasterella originated from the late Lower Cretaceous (c. 143.0 Ma). The ancestral Aytoniaceae plant is reconstructed as the absence of a pseudoperianth, lacking equatorial apertures, and having both male and female reproductive organs on the main thallus. At present, Asterellopsis consists of two species known in Asia and America with the new transfer of Asterella palmeri to Asterellopsis. A new subgenus, Asterella subg. Lindenbergianae, is proposed.

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Section: Divergence Time Estimationmentioning

confidence: 62%

Molecular Phylogenetics and the Evolution of Morphological Complexity in Aytoniaceae (Marchantiophyta)

Xiang,

Shen,

et al. 2024

Plants

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Estimating essential phenotypic and molecular traits from integrative biodiversity data

Peters,

Ziegler,

Neumann

2024

Preprint

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In the context of biodiversity, only few functional traits and mechanisms are known from underrepresented groups such as mosses (bryophytes). Here, we use 16 field samples of complex thallose liverworts (order Marchantiales) collected from biological soil crusts as reference data for the reusable computational framework iESTIMATE that integrates and extracts phenotypic and molecular traits; and estimates Essential Molecular Variables (EMV). Our reference data involves (1) bioimaging, (2) metabolomics, and (3) DNA marker sequencing. These data are used to demonstrate the systematic and standardized extraction of phenotypic and molecular traits. To demonstrate the reusability of our framework, we propose naming schemes, apply Random Forest to estimate EMVs, phylogenetic dendrograms and partitioning around medoids to connect evolutionary relationships with ecological hypotheses and to document knowledge gains across domains. With this work we want to encourage the combined assessment, reuse and integration of phenotypic and molecular traits into functional ecology, biodiversity and related disciplines.

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Revisiting the phylogeny of royal ferns (Osmundales) through the lens of character dependence and restudied fossil taxa questions existing family and subfamily concepts

Urrea,

Yañez,

Flores

2024

Cladistics

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The royal ferns (Osmundales) are a morphologically diverse group of leptosporangiate ferns, the fossil record of which dates back to the Permian. Despite there being numerous described permineralized species, the phylogenetic relationships between extinct species remain contentious. Although several analytical approaches have been applied to infer well‐resolved phylogenetic hypotheses—even methods that are arguably conceived to be better at dealing with data conflict and uncertainty, many taxa have not been assigned to specific taxonomic categories. Here, we evaluate the phylogenetic affinities in Osmundales by reanalysing a dataset comprising an extensive taxon sampling of fossil Osmundalean rhizomes. The impact of both character dependence and weighting characters against homoplasy on the inferred topologies is also evaluated. Our analyses cast doubts on the monophyly of Osmundaceae and Guaireaceae. Subfamily Itopsidemoideae was rendered monophyletic when inferences were conducted by considering character dependence and downweighting characters. The subfamily Osmundoideae was retrieved monophyletic only under one concavity value and using character dependence while the remaining subfamilies included fossils with uncertain affinities within Osmundales. The position of Osmundacaulis, for instance, was recovered as a sister taxon to guaireoid fossils. To recover the monophyly of the categories below the subfamily level, incorporating character dependence and/or weighting against homoplasy was necessary. Consistent with previous studies, multiple taxa were unstable, leaving their phylogenetic affinities unclear. Our analyses underline the impact of accounting for both character dependence and weighting against homoplasy, especially when considering the contribution of missing data to observed homoplasy. Ultimately, these considerations yield markedly different topologies that imply contrasting classification schemes, highlighting the complexity inherent in resolving the evolutionary history of royal ferns.

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Dating the evolution of the complex thalloid liverworts (Marchantiopsida): total‐evidence dating analysis supports a Late Silurian‐Early Devonian origin and post‐Mesozoic morphological stasis

Cited by 3 publications

References 100 publications

Molecular Phylogenetics and the Evolution of Morphological Complexity in Aytoniaceae (Marchantiophyta)

Molecular Phylogenetics and the Evolution of Morphological Complexity in Aytoniaceae (Marchantiophyta)

Estimating essential phenotypic and molecular traits from integrative biodiversity data

Revisiting the phylogeny of royal ferns (Osmundales) through the lens of character dependence and restudied fossil taxa questions existing family and subfamily concepts

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