Insights on long-distance dispersal, ecological and morphological evolution in the fern genus<i>Microgramma</i>from phylogenetic inferences

Almeida, Thaís Elias; Salino, Alexandre; Dubuisson, Jean‐Yves; Hennequin, Sabine

doi:10.1101/2020.06.07.138776

Cited by 1 publication

(1 citation statement)

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“…Recently, a taxonomy of ferns and lycophytes was established at the genus level and higher using an inclusive, community-driven approach (Pteridophyte Phylogeny Group I, 2016; hereafter "PPG I"). PPG I has been widely accepted and used, but there were problematic (non-monophyletic) genera included at the time of publication, and many taxonomic changes have been (and will continue to be) proposed since (e.g., Almeida et al, 2017;Shang et al, 2018;Zhang et al, 2020). The next iteration of the PPG classification (i.e., PPG II) will ideally be an online, open resource that can be updated as necessary.…”

Section: Introductionmentioning

confidence: 99%

An open and continuously updated fern tree of life

et al. 2022

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Ferns, with about 12,000 species, are the second most diverse lineage of vascular plants after angiosperms. They have been the subject of numerous molecular phylogenetic studies, resulting in the publication of trees for every major clade and DNA sequences from nearly half of all species. Global fern phylogenies have been published periodically, but as molecular systematics research continues at a rapid pace, these become quickly outdated. Here, we develop a mostly automated, reproducible, open pipeline to generate a continuously updated fern tree of life (FTOL) from DNA sequence data available in GenBank. Our tailored sampling strategy combines whole plastomes (few taxa, many loci) with commonly sequenced plastid regions (many taxa, few loci) to obtain a global, species-level fern phylogeny with high resolution along the backbone and maximal sampling across the tips. We use a curated reference taxonomy to resolve synonyms in general compliance with the community-driven Pteridophyte Phylogeny Group I classification. The current FTOL includes 5,582 species, an increase of ca. 40% relative to the most recently published global fern phylogeny. Using an updated and expanded list of 51 fern fossil constraints, we find estimated ages for most families and deeper clades to be considerably older than earlier studies. FTOL and its accompanying datasets, including the fossil list and taxonomic database, will be updated on a regular basis and are available via a web portal (https://fernphy.github.io) and R packages, enabling immediate access to the most up-to-date, comprehensively sampled fern phylogeny. FTOL will be useful for anyone studying this important group of plants over a wide range of taxonomic scales, from smaller clades to the entire tree. We anticipate FTOL will be particularly relevant for macroecological studies at regional to global scales and will inform future taxonomic systems with the most recent hypothesis of fern phylogeny.

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Section: Introductionmentioning

confidence: 99%