Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini)

Zebrafish
Ramon Marin FavaratoDaniele Aparecida Matoso

Abstract

The Ancistrus genus differs from other Ancistrini due to its wide karyotypic diversity, varied diploid numbers, differences in sex chromosomes, and large number of species, as well as its tendency to form small populations with low vagility. This study investigated the role of 5S and 18S rDNA and telomeric repetitive sequences in the evolution of the karyotypic macrostructure of seven species of the genus Ancistrus from the Central Amazon. The results indicate a strong correlation between the location of ribosomal sites and fragile sites in the genome, particularly of 5S rDNA sequences, which are associated, in some species, with telomeric sequences at the sites of chromosomal healing. Moreover, the occurrence of two lineages was observed with regard to the synteny of ribosomal genes. The species of the genus Ancistrus showed high chromosomal lability associated with breakpoints, which was characterized by the presence of repetitive DNA sequences and this process is suggested to be an evolutionary model for the rapid fixation of structural rearrangements.

References

Sep 11, 1991·Nucleic Acids Research·J W IjdoS T Reeders
May 1, 1986·Proceedings of the National Academy of Sciences of the United States of America·D PinkelJ W Gray
Oct 9, 1999·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·C Martins, P M Galetti
Feb 9, 2002·Hereditas·R F Artoni, L A Bertollo
Nov 25, 2004·Heredity·K F KavalcoO Moreira-Filho
Feb 11, 2005·Hereditas·Karine Frehner KavalcoOrlando Moreira-Filho
Jan 5, 2008·Genetica·Marcelo Ricardo VicariLuiz Antonio Carlos Bertollo
Apr 23, 2010·Journal of Fish Biology·M C GrossE Feldberg
Nov 22, 2013·Comparative Cytogenetics·Adauto Lima CardosoRenata Coelho Rodrigues Noronha

❮ Previous
Next ❯

Citations

Jan 24, 2017·Gene·Alain Victor BarrosMarcelo Ricardo Vicari
Jan 27, 2017·Comparative Cytogenetics·Karlla Danielle Jorge AmorimWagner Franco Molina
Apr 16, 2019·Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis·Rafael Splendore de BorbaPatricia Pasquali Parise-Maltempi
Jul 25, 2019·International Journal of Molecular Sciences·Dongdong XuMarcelo de Bello Cioffi
Jun 11, 2020·Molecular Biology Reports·Priscila MezzomoRogério L Cansian
Jul 27, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Alexandr SemberMarcelo de Bello Cioffi
Oct 19, 2021·Frontiers in Genetics·Carolina CrepaldiPatricia Pasquali Parise-Maltempi

❮ Previous
Next ❯

Methods Mentioned

BETA
PCR

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.