Dataset Information

Resurrection of Leucobryumscalare Mull.Hal. ex M.Fleisch. (Bryophyta, Leucobryaceae) based on phylogenetic and morphometric evidence.

ABSTRACT: Leucobryumscalare was described in 1904 but its taxonomic status has been disputed, being reduced to a variety of Leucobryumaduncum or synonymized with Leucobryumaduncum. The taxonomic confusion of this taxon has remained unresolved. Hence, we revisited the taxonomic status of the taxon using phylogenetic and morphometric approaches. A total of 27 samples from Leucobryumaduncumvar.aduncum and Leucobryumaduncumvar.scalare were used to generate data from four markers, including ITS1, ITS2, atpB-rbcL spacer, and trnL-trnF. The concatenated dataset was used to reconstruct a phylogenetic tree. Both qualitative and quantitative morphological characters were measured and analyzed with Principal Component Analysis (PCA) and PERMANOVA. The results showed that the two taxa are closely related but they are reciprocally monophyletic. Both qualitative and quantitative characters could also separate Leucobryumaduncumvar.scalare from Leucobryumaduncumvar.aduncum as shown with PCA and PERMANOVA. We propose the resurrection of the species rank for Leucobryumscalare as separate from Leucobryumaduncum. This work highlights the need for a more thorough revision of Leucobryum to clarify the actual level of diversity in this genus.

SUBMITTER: Tiwutanon P

PROVIDER: S-EPMC10209505 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Resurrection of Leucobryumscalare Müll.Hal. ex M.Fleisch. (Bryophyta, Leucobryaceae) based on phylogenetic and morphometric evidence.

Tiwutanon Patsakorn P Chaiyasut Kasidis K Lumbsch H Thorsten HT Kraichak Ekaphan E

PhytoKeys 20230320

Leucobryumscalare was described in 1904 but its taxonomic status has been disputed, being reduced to a variety of Leucobryumaduncum or synonymized with Leucobryumaduncum. The taxonomic confusion of this taxon has remained unresolved. Hence, we revisited the taxonomic status of the taxon using phylogenetic and morphometric approaches. A total of 27 samples from Leucobryumaduncumvar.aduncum and Leucobryumaduncumvar.scalare were used to generate data from four markers, includin ...[more]

PMID: 37252643

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Project description:BackgroundIsolating phylogenetic signal from morphological data is crucial for accurately merging fossils into the tree of life and for calibrating molecular dating. However, subjective character definition is a major limitation which can introduce biases that mislead phylogenetic inferences and divergence time estimation. The use of quantitative data, e.g., geometric morphometric (GMM; shape) data can allow for more objective integration of morphological data into phylogenetic inference. This systematic review describes the current state of the field in using continuous morphometric data (e.g., GMM data) for phylogenetic reconstruction and assesses the efficacy of these data compared to discrete characters using the PRISMA-EcoEvo v1.0. reporting guideline, and offers some pathways for approaching this task with GMM data. A comprehensive search string yielded 11,123 phylogenetic studies published in English up to Oct 2023 in the Web of Science database. Title and abstract screening removed 10,975 articles, and full-text screening was performed for 132 articles. Of these, a total of twelve articles met final inclusion criteria and were used for downstream analyses.ResultsPhylogenetic performance was compared between approaches that employed continuous morphometric and discrete morphological data. Overall, the reconstructed phylogenies did not show increased resolution or accuracy (i.e., benchmarked against molecular phylogenies) as continuous data alone or combined with discrete morphological datasets.ConclusionsAn exhaustive search of the literature for existing empirical continuous data resulted in a total of twelve articles for final inclusion following title/abstract, and full-text screening. Our study was performed under a rigorous framework for systematic reviews, which showed that the lack of available comparisons between discrete and continuous data hinders our understanding of the performance of continuous data. Our study demonstrates the problem surrounding the efficacy of continuous data as remaining relatively intractable despite an exhaustive search, due in part to the difficulty in obtaining relevant comparisons from the literature. Thus, we implore researchers to address this issue with studies that collect discrete and continuous data sets with directly comparable properties (i.e., describing shape, or size).

Dataset Information

Resurrection of Leucobryumscalare Mull.Hal. ex M.Fleisch. (Bryophyta, Leucobryaceae) based on phylogenetic and morphometric evidence.

Publications

Resurrection of <i>Leucobryumscalare</i> Müll.Hal. ex M.Fleisch. (Bryophyta, Leucobryaceae) based on phylogenetic and morphometric evidence.

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OmicsDI is part of the ELIXIR infrastructure

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Dataset Information

Resurrection of Leucobryumscalare Mull.Hal. ex M.Fleisch. (Bryophyta, Leucobryaceae) based on phylogenetic and morphometric evidence.

Publications

﻿Resurrection of <i>Leucobryumscalare</i> Müll.Hal. ex M.Fleisch. (Bryophyta, Leucobryaceae) based on phylogenetic and morphometric evidence.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

Resurrection of <i>Leucobryumscalare</i> Müll.Hal. ex M.Fleisch. (Bryophyta, Leucobryaceae) based on phylogenetic and morphometric evidence.