Results 11 to 20 of about 2,455 (197)

Correction: Evidence for Centromere Drive in the Holocentric Chromosomes of Caenorhabditis. [PDF]

PLoS ONE, 2016
There are errors in the Supporting Information file S1 Text. Please see the corrected S1 Text here.
František Zedek, Petr Bureš
doaj   +4 more sources

Heterochromatin differentiation in holocentric chromosomes of Rhynchospora (Cyperaceae) [PDF]

Genetics and Molecular Biology, 2000
Holocentric chromosomes of six species of Rhynchospora, R. ciliata, R. pubera, R. riparia and R. barbata (2n = 10), R. nervosa (2n = 30) and R. globosa (2n = 36), were stained with CMA3/DAPI fluorochromes or treated with C-banding and sequentially ...
André L.L. Vanzela, Marcelo Guerra
doaj   +4 more sources

Chromosome number evolves at equal rates in holocentric and monocentric clades.

PLoS Genetics, 2020
Despite the fundamental role of centromeres two different types are observed across plants and animals. Monocentric chromosomes possess a single region that function as the centromere while in holocentric chromosomes centromere activity is spread across ...
Sarah N Ruckman, Michelle M Jonika, Claudio Casola, Heath Blackmon   +3 more
doaj   +4 more sources

The holocentric chromosome microevolution: From phylogeographic patterns to genomic associations with environmental gradients

Molecular Ecology, Volume 33, Issue 24, December 2024., 2023
Abstract Geographic isolation and chromosome evolution are two of the major drivers of diversification in eukaryotes in general, and specifically, in plants. On one hand, range shifts induced by Pleistocene glacial oscillations deeply shaped the evolutionary trajectories of species in the Northern Hemisphere.
José Ignacio Márquez‐Corro, Santiago Martín‐Bravo, José Luis Blanco‐Pastor, Modesto Luceño, Marcial Escudero   +4 more
wiley   +7 more sources

Repeat-based holocentromeres of the woodrush Luzula sylvatica reveal insights into the evolutionary transition to holocentricity [PDF]

Nature Communications
In most studied eukaryotes, chromosomes are monocentric, with centromere activity confined to a single region. However, the rush family (Juncaceae) includes species with both monocentric (Juncus) and holocentric (Luzula) chromosomes, where centromere ...
Yennifer Mata-Sucre, Marie Krátká, Ludmila Oliveira, Pavel Neumann, Jiří Macas, Veit Schubert, Bruno Huettel, Eduard Kejnovský, Andreas Houben, Andrea Pedrosa-Harand, Gustavo Souza, André Marques   +11 more
doaj   +2 more sources

Cryoimmobilized anther analysis reveals new ultrastructural insights into Rhynchospora (Cyperaceae) asymmetrical microsporogenesis [PDF]

Frontiers in Plant Science
IntroductionThe Cyperaceae family is distinguished by holocentric chromosomes and a distinctive microsporogenesis process, which includes inverted meiosis, asymmetric tetrad formation, selective cell death, and the formation of pseudomonad pollen ...
Danilo M. Rocha, Ulla Neumann, Fernanda M. Nogueira, Georgios Tsipas, André L. L. Vanzela, André Marques   +5 more
doaj   +2 more sources

Cytogenetic and molecular analysis of the holocentric chromosomes of the potato aphid Macrosiphum euphorbiae (Thomas, 1878) [PDF]

Comparative Cytogenetics, 2011
Cytogenetic and molecular investigations on the holocentric chromosomes of the aphid Macrosiphum euphorbiae (Thomas, 1878) have been carried out using silver staining and C-banding (followed by chromomycin A3 and DAPI staining) in order to improve our ...
Valentina Monti, Gian Carlo Manicardi, Mauro Mandrioli   +2 more
doaj   +2 more sources

Recent advances in plant kinetochore research [PDF]

Frontiers in Cell and Developmental Biology
Faithful chromosome segregation is crucial for cell division in eukaryotes, facilitated by the kinetochore, a multi-subunit protein complex that connects chromosomes to the spindle microtubules.
Elena Kozgunova, Elena Kozgunova
doaj   +2 more sources

Unprecedented reorganization of holocentric chromosomes provides insights into the enigma of lepidopteran chromosome evolution. [PDF]

Sci Adv, 2019
Unprecedented reorganization in a butterfly genome sheds light on the enigma of holocentric chromosome evolution.
Hill J, Rastas P, Hornett EA, Neethiraj R, Clark N, Morehouse N, de la Paz Celorio-Mancera M, Cols JC, Dircksen H, Meslin C, Keehnen N, Pruisscher P, Sikkink K, Vives M, Vogel H, Wiklund C, Woronik A, Boggs CL, Nylin S, Wheat CW.   +19 more
europepmc   +18 more sources

Whole-Genome Analysis Reveals the Dynamic Evolution of Holocentric Chromosomes in Satyrine Butterflies. [PDF]

Genes (Basel), 2023
Butterfly chromosomes are holocentric, i.e., lacking a localized centromere. Potentially, this can lead to rapid karyotypic evolution through chromosome fissions and fusions, since fragmented chromosomes retain kinetic activity, while fused chromosomes are not dicentric. However, the actual mechanisms of butterfly genome evolution are poorly understood.
Pazhenkova EA, Lukhtanov VA.
europepmc   +3 more sources