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Stable minichromosome and functional neocentromere derived from rye 7R chromosome arm.
BMC Plant Biol
December 2024
College of Agronomy, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China.
Background: The study of newly formed centromere with stable transmission ability can provide theoretical guidance for the construction of artificial chromosomes. More neocentromeres are needed to study the mechanisms of their formation.
Results: In this study, a minichromosome 7RLmini was derived from the progeny of wheat-rye 7R monosomic addition line.
Highlighting chromosomal rearrangements of five species of Galliformes (Domestic fowl, Common and Japanese quail, Barbary and Chukar partridge) and the Houbara bustard, an endangered Otidiformes: banding cytogenetic is a powerful tool.
Comp Cytogenet
December 2024
Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), Laboratory of Cellular and Molecular Biology, Team of Developmental Genetics. PO box 32 El-Alia, Bab-Ezzouar, 16110, Algiers, Algeria University of Sciences and Technology Houari Boumediene (USTHB) Algiers Algeria.
Birds are one of the most diverse groups among terrestrial vertebrates. They evolved from theropod dinosaurs, are closely related to the sauropsid group and separated from crocodiles about 240 million years ago. According to the IUCN, 12% of bird populations are threatened with potential extinction.
View Article and Find Full Text PDFThe complete genome assembly of Nicotiana benthamiana reveals the genetic and epigenetic landscape of centromeres.
Nat Plants
December 2024
Shandong Key Laboratory of Precision Molecular Crop Design and Breeding, Peking University Institute of Advanced Agricultural Sciences, Shandong Laboratory of Advanced Agricultural Sciences in Weifang, Weifang, China.
Article Synopsis
- Nicotiana benthamiana is a key model organism in plant biology, and researchers have generated a complete genome assembly for the plant, which is 2.85 Gb in size.
- The study reveals that while Ty3/Gypsy retrotransposons are common in centromeres of the Solanaceae family, N. benthamiana surprisingly has many centromeres rich in satellite DNA, which are essential for their function.
- The findings suggest that new centromeres in N. benthamiana may form through processes involving neocentromere formation, satellite expansion, and the integration of mitochondrial DNA.
Prenatal identification of an inverted duplicated 13q marker chromosome with a neocentromere.
Mol Cytogenet
November 2023
Department of Human Genetics, Amsterdam Reproduction and Development Research Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands.
In this case report, we describe a rare prenatal finding of a small marker chromosome. This marker chromosome corresponds to an inverted duplication of the 13q region 13q31.1q34 (or 13q31.
View Article and Find Full Text PDFContext-dependent neocentromere activity in synthetic yeast chromosome .
Cell Genom
November 2023
Institute for Systems Genetics and Department of Biochemistry and Molecular Pharmacology, NYU Langone Health, New York, NY, USA.
Pioneering advances in genome engineering, and specifically in genome writing, have revolutionized the field of synthetic biology, propelling us toward the creation of synthetic genomes. The Sc2.0 project aims to build the first fully synthetic eukaryotic organism by assembling the genome of .
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