AI Article Synopsis
- The complete mitochondrial genome of the machilid species is described and utilized for phylogenetic analyses of early-diverging hexapod lineages.
- The gene organization is generally consistent with other arthropods, but features a unique translocation and an unusually long A + T-rich region due to repeat units.
- The phylogenetic findings affirm the expected relationships among hexapods, positioning Ectognatha, Monocondylia, and Dicondylia together, with Diplura being the closest relative to true insects.
Article Abstract
The complete mitochondrial genome of the machilid (Silvestri 1904) is herein described and applied to phylogenetic analyses, inclusive of the most early-divergent lineages of hexapods. Both gene content and order generally conform with the organization of the arthropods' mitochondrial genome. One gene translocation involving is the autapomorphic character observed in this species. Another peculiar molecular feature is the long size of the A + T-rich region, due to the occurrence of repeat units. The phylogenetic analyses support the typical placement, along the hexapods' tree, of Ectognatha, Monocondylia and Dicondylia, with Diplura as the adelphotaxon of all true insects.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7706868 | PMC |
| http://dx.doi.org/10.1080/23802359.2019.1660592 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ancient Origin of Acetyltransferases Catalyzing O-acetylation of Plant Cell Wall Polysaccharides.
Plant Cell Physiol
October 2024
Department of Plant Biology, University of Georgia, Athens, GA 30602, USA.
Members of the domain of unknown function 231/trichome birefringence-like (TBL) family have been shown to be O-acetyltransferases catalyzing the acetylation of plant cell wall polysaccharides, including pectins, mannan, xyloglucan and xylan. However, little is known about the origin and evolution of plant cell wall polysaccharide acetyltransferases. Here, we investigated the biochemical functions of TBL homologs from Klebsormidium nitens, a representative of an early divergent class of charophyte green algae that are considered to be the closest living relatives of land plants, and Marchantia polymorpha, a liverwort that is an extant representative of an ancient lineage of land plants.
View Article and Find Full Text PDFFungi contribute to different important ecological processes, including decomposition of organic matter and nutrient cycling, but in the marine environment the main factors influencing their diversity and dynamics at the spatial and temporal levels are still largely unclear. In this study, we performed DNA metabarcoding on seawater sampled monthly over a year and a half in the Gulf of Trieste (northern Adriatic Sea), targeting the internal transcribed spacer (ITS) and the 18S rRNA gene regions. The fungal communities were diverse, very dynamic, and belonged predominantly to marine taxa.
View Article and Find Full Text PDFEvolutionary and developmental specialization of foveal cell types in the marmoset.
Proc Natl Acad Sci U S A
April 2024
Department of Ophthalmology and Stein Eye Institute, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095.
In primates, high-acuity vision is mediated by the fovea, a small specialized central region of the retina. The fovea, unique to the anthropoid lineage among mammals, undergoes notable neuronal morphological changes during postnatal maturation. However, the extent of cellular similarity across anthropoid foveas and the molecular underpinnings of foveal maturation remain unclear.
View Article and Find Full Text PDFBoth-strand gene coding in a plastome-like mitogenome of an enoplid nematode.
J Exp Zool B Mol Dev Evol
September 2024
Department of Entomology, Plant Pathology & Weed Science, New Mexico State University, Las Cruces, New Mexico, USA.
Article Synopsis
- * Researchers describe the first complete mitogenome of an enoplian nematode, Campydora demonstrans, which shows a unique structure reminiscent of chloroplast genomes in land plants, differing from other nematode lineages.
- * This work enhances the mtDNA representation within Nematoda and supports using the cox1 gene as a valuable tool for understanding nematode evolutionary relationships.
Unlabelled: In primates, high-acuity vision is mediated by the fovea, a small specialized central region of the retina. The fovea, unique to the anthropoid lineage among mammals, undergoes notable neuronal morphological changes during postnatal maturation. However, the extent of cellular similarity across anthropoid foveas and the molecular underpinnings of foveal maturation remain unclear.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!