Holocentric chromosomes in animals and plants: what do we know about these points outside the curve?
Evidência, 2023 Usually, members of the Eukarya domain have kinetochores grouped at a single point, characterizing monocentric chromosomes. However, in some taxa the protein apparatus that composes the kinetochore is distributed continuously or discretely along the ...
Gabriela Corrêa Morais +2 more
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Meiosis Progression and Recombination in Holocentric Plants: What Is Known?
Frontiers in Plant Science, 2021 Differently from the common monocentric organization of eukaryotic chromosomes, the so-called holocentric chromosomes present many centromeric regions along their length.
Paulo G. Hofstatter +3 more
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A holocentric twist to chromosomal speciation?
Trends in Ecology & Evolution, 2022 Chromosomal rearrangements trigger speciation by acting as barriers to gene flow. However, the underlying theory was developed with monocentric chromosomes in mind. Holocentric chromosomes, lacking a centromeric region, have repeatedly evolved and account for a significant fraction of extant biodiversity.
Kay Lucek +2 more
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A satellite explosion in the genome of holocentric nematodes. [PDF]
PLoS ONE, 2013 Centromere sequences in the genome are associated with the formation of kinetochores, where spindle microtubules grow in mitosis. Centromere sequences usually have long tandem repeats (satellites).
Juan A Subirana, Xavier Messeguer
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Analysis of insect holocentric chromosomes by atomic force microscopy [PDF]
Hereditas, 2003 In order to go in depth into the analysis of holocentric chromosome structure, atomic force microscopy (AFM) was applied to metaphase plates of the aphid Megoura viciae. AFM showed that aphid chromatids adhere to one another without any prominent structure detectable between them and without any evidence of chromosomal constrictions.
MANDRIOLI, Mauro, MANICARDI, Gian Carlo
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Holocentromeres can consist of merely a few megabase-sized satellite arrays
Nature Communications, 2023 The centromere is the chromosome region where microtubules attach during cell division. In contrast to monocentric chromosomes with one centromere, holocentric species usually distribute hundreds of centromere units along the entire chromatid.
Yi-Tzu Kuo +17 more
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The Glanville fritillary genome retains an ancient karyotype and reveals selective chromosomal fusions in Lepidoptera [PDF]
, 2014 Previous studies have reported that chromosome synteny in Lepidoptera has been well conserved, yet the number of haploid chromosomes varies widely from 5 to 223.
Waterhouse, Robert M.
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Stretching the Rules: Monocentric Chromosomes with Multiple Centromere Domains [PDF]
, 2012 The centromere is a functional chromosome domain that is essential for faithful chromosome segregation during cell division and that can be reliably identified by the presence of the centromere-specific histone H3 variant CenH3.
A Kawabe +45 more
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C-banding, fluorescent staining and NOR location in holokinetic chromosomes of bugs of the Neotropical genus Antiteuchus (Heteroptera: Pentatomidae: Discocephalinae) [PDF]
, 2006 Different cytogenetic techniques including C-banding, base-specific fluorochromes and silver nitrate staining were used to compare the karyotypes of three species of bugs, representatives of the Neotropical genus Antiteuchus, namely A.
de Souza, Maria José, Lanzone, Cecilia
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Chromosome Centromeres: Structural and Analytical Investigations with High Resolution Scanning Electron Microscopy in Combination with Focused Ion Beam Milling [PDF]
, 2009 Whole mount mitotic metaphase chromosomes of different plants and animals were investigated with high resolution field emission scanning electron microscopy (FESEM) to study the ultrastructural organization of centromeres, including metacentric ...
Schroeder-Reiter, E., Wanner, Gerhard
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