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Phylogenomics yields new systematic and taxonomical insights for Lissotriton newts, a genus with a strong legacy of introgressive hybridization.
Mol Phylogenet Evol
December 2024
Institute of Biology Leiden, Leiden University, P.O. Box 9505, 2300 RA Leiden, The Netherlands; Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA Leiden, The Netherlands. Electronic address:
The ease with which genome-wide data can nowadays be collected allows complicated phylogenetic questions to be re-evaluated. Phylogenetic relationships among newts have often proven difficult to resolve due to the prevalence of incomplete lineage sorting and introgressive hybridization. For the newt genus Lissotriton, phylogenetic relationships are not settled and there is controversy surrounding the species status of several taxa.
View Article and Find Full Text PDFDisentangling conflicting molecular phylogenetic signals in nuclear and plastid DNA of the western Eurasian-Mediterranean grass genus Cynosurus and its relatives (Poaceae subtribes Cynosurinae and Parapholiinae).
Mol Phylogenet Evol
December 2024
Institute of Biology, Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Neuwerk 21, 06108 Halle (Saale), Germany. Electronic address:
The western Eurasian-Mediterranean grass genus Cynosurus, comprising about 11 species, is morphologically well delimited by the regular occurrence of conspicuous sterile spikelets distal to the fertile ones on the outer, abaxial side of the inflorescences. However, our molecular phylogenetic study using nuclear ribosomal DNA (ITS, ETS) and plastid DNA sequences (trnL-F, matK) has shown that the genus is not monophyletic in its current delimitation, but consists of three distinct lineages. These lineages were found to be closely related to a group of 6-7 genera taxonomically assigned to the subtribe Parapholiinae.
View Article and Find Full Text PDFReticulate evolution: Detection and utility in the phylogenomics era.
Mol Phylogenet Evol
December 2024
Howards Hughes Medical Institute and the Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA, USA. Electronic address:
Article Synopsis
- Phylogenomics shows that the Tree of Life can have complex, network-like structures instead of just a simple branching pattern, due to processes like hybridization/introgression and horizontal gene transfer.
- These processes can create patterns that resemble incomplete lineage sorting, which can lead to confusion in understanding evolutionary relationships.
- The article outlines a workflow for analyzing these evolutionary histories, highlights how timing of events can clarify distinctions between different modes of evolution, and emphasizes the importance of recognizing these complex patterns to better understand the history of life.
Using Precision Medicine to Disentangle Genotype-Phenotype Relationships in Twins with Rett Syndrome: A Case Report.
Curr Issues Mol Biol
August 2024
Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London SE5 8AF, UK.
Rett syndrome (RTT) is a paediatric neurodevelopmental disorder spanning four developmental stages. This multi-system disorder offers a unique window to explore genotype-phenotype relationships in a disease model. However, genetic prognosticators of RTT have limited clinical value due to the disorder's heterogeneity on multiple levels.
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