Genomic organization of repetitive DNAs highlights chromosomal evolution in the genus Clarias (Clariidae, Siluriformes)

Molecular Cytogenetics
Nuntiya ManeechotMarcelo de Bello Cioffi

Abstract

The genus Clarias (Clariidae, Siluriformes) contains at least 61 species naturally spread over vast regions of Asia, India and Africa. However, Clarias species have also been introduced in many different countries and represent the most widespread catfishes in the world. These fishes are also known as "walking catfishes" due to their ability to move over land. A large degree of chromosomal variation has been previously found in this family, mainly using conventional cytogenetic investigations, with diploid chromosome numbers ranging between 48 and 100. In this study, we analyzed the karyotype structure and distribution of four repetitive DNA sequences (5S and 18S rDNAs and (CA)15 and (GA)15 microsatellites) in three Clarias species (C. batrachus, C. gariepinus, C. macrocephalus), as well as in a probable natural hybrid of the two latter species from different Thailand river basins. Clarias gariepinus and C. macrocephalus had 2n = 56 and 2n = 54, respectively, as well as karyotypes composed mainly by metacentric and submetacentric chromosomes. Their karyotypes differed in the number and location of 5S and 18S rDNA sites and in the degree of microsatellite accumulation. An intermediate chromosomal pattern incorporating those of t...Continue Reading

References

Jan 1, 1979·Basic Life Sciences·W H Lewis
May 1, 1986·Proceedings of the National Academy of Sciences of the United States of America·D PinkelJ W Gray
May 25, 1984·Nucleic Acids Research·D Tautz, M Renz
Oct 1, 2004·Nature·Ning JiangSusan R Wessler
Oct 7, 2004·Proceedings of the National Academy of Sciences of the United States of America·Olga RaskinaEviatar Nevo
Jun 14, 2005·Proceedings of the National Academy of Sciences of the United States of America·Jinsheng LaiHugo K Dooner
Mar 16, 2007·Nature·James Mallet
Apr 29, 2008·Genome Génome / Conseil National De Recherches Canada·Zdenek KubatEduard Kejnovsky
May 28, 2008·Cytogenetic and Genome Research·O RaskinaA Belyayev
Oct 2, 2013·Cytogenetic and Genome Research·L RebordinosA Merlo
Dec 30, 2014·Zootaxa·Heok Hee Ng, Maurice Kottelat
Oct 30, 2015·Molecular Cytogenetics·Carla Sofia A PereiraMaria João Collares-Pereira

❮ Previous
Next ❯

Citations

Apr 16, 2021·Biochemistry and Biophysics Reports·Gyanendra Bahadur ChandGajendra Kumar Azad

❮ Previous
Next ❯

Software Mentioned

Image Pro Plus
Clarias

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.